blob: 7941a6d739483edfc5e3b3e81403716133eee97a [file] [log] [blame]
Jens Axboe10ba5352006-10-20 11:39:27 +02001#include <unistd.h>
2#include <fcntl.h>
3#include <string.h>
4#include <signal.h>
5#include <time.h>
Jens Axboe0c6e7512007-02-22 11:19:39 +01006#include <assert.h>
Jens Axboe10ba5352006-10-20 11:39:27 +02007
8#include "fio.h"
Jens Axboe5973caf2008-05-21 19:52:35 +02009#include "hash.h"
Jens Axboe4f5af7b2009-06-03 08:45:40 +020010#include "verify.h"
Jens Axboe0d29de82010-09-01 13:54:15 +020011#include "trim.h"
Jens Axboe1fbbf722010-03-25 23:03:18 +010012#include "lib/rand.h"
Jens Axboe7ebd7962012-11-28 21:24:46 +010013#include "lib/axmap.h"
Jens Axboe10ba5352006-10-20 11:39:27 +020014
Jens Axboe97601022007-02-18 12:47:29 +010015struct io_completion_data {
16 int nr; /* input */
Jens Axboe97601022007-02-18 12:47:29 +010017
18 int error; /* output */
Jens Axboe100f49f2013-01-23 10:15:57 -070019 uint64_t bytes_done[DDIR_RWDIR_CNT]; /* output */
Jens Axboe97601022007-02-18 12:47:29 +010020 struct timeval time; /* output */
21};
22
Jens Axboe10ba5352006-10-20 11:39:27 +020023/*
Jens Axboe7ebd7962012-11-28 21:24:46 +010024 * The ->io_axmap contains a map of blocks we have or have not done io
Jens Axboe10ba5352006-10-20 11:39:27 +020025 * to yet. Used to make sure we cover the entire range in a fair fashion.
26 */
Jens Axboe1ae83d42013-01-12 01:44:15 -070027static int random_map_free(struct fio_file *f, const uint64_t block)
Jens Axboe10ba5352006-10-20 11:39:27 +020028{
Jens Axboe7ebd7962012-11-28 21:24:46 +010029 return !axmap_isset(f->io_axmap, block);
Jens Axboe10ba5352006-10-20 11:39:27 +020030}
31
32/*
Jens Axboedf415582006-10-20 11:41:03 +020033 * Mark a given offset as used in the map.
34 */
Jens Axboe9bf20612007-03-01 09:33:57 +010035static void mark_random_map(struct thread_data *td, struct io_u *io_u)
Jens Axboedf415582006-10-20 11:41:03 +020036{
Jens Axboe2dc1bbe2007-03-15 15:01:33 +010037 unsigned int min_bs = td->o.rw_min_bs;
Jens Axboe9bf20612007-03-01 09:33:57 +010038 struct fio_file *f = io_u->file;
Jens Axboe51ede0b2012-11-22 13:50:29 +010039 unsigned int nr_blocks;
Jens Axboe1ae83d42013-01-12 01:44:15 -070040 uint64_t block;
Jens Axboedf415582006-10-20 11:41:03 +020041
Jens Axboe1ae83d42013-01-12 01:44:15 -070042 block = (io_u->offset - f->file_offset) / (uint64_t) min_bs;
Jens Axboec685b5b2007-02-10 20:02:28 +010043 nr_blocks = (io_u->buflen + min_bs - 1) / min_bs;
44
Jens Axboe2ab9e982012-11-22 15:14:17 +010045 if (!(io_u->flags & IO_U_F_BUSY_OK))
Jens Axboe7ebd7962012-11-28 21:24:46 +010046 nr_blocks = axmap_set_nr(f->io_axmap, block, nr_blocks);
Jens Axboedf415582006-10-20 11:41:03 +020047
Jens Axboe51ede0b2012-11-22 13:50:29 +010048 if ((nr_blocks * min_bs) < io_u->buflen)
49 io_u->buflen = nr_blocks * min_bs;
Jens Axboedf415582006-10-20 11:41:03 +020050}
51
Jens Axboe74776732013-01-11 14:03:25 +010052static uint64_t last_block(struct thread_data *td, struct fio_file *f,
53 enum fio_ddir ddir)
Jens Axboe2ba1c292008-02-01 13:16:38 +010054{
Jens Axboe74776732013-01-11 14:03:25 +010055 uint64_t max_blocks;
56 uint64_t max_size;
Jens Axboe2ba1c292008-02-01 13:16:38 +010057
Jens Axboeff58fce2010-08-25 12:02:08 +020058 assert(ddir_rw(ddir));
59
Jens Axboed9dd70f2008-05-23 12:37:23 +020060 /*
61 * Hmm, should we make sure that ->io_size <= ->real_file_size?
62 */
63 max_size = f->io_size;
64 if (max_size > f->real_file_size)
65 max_size = f->real_file_size;
66
Steven Noonaned335852012-01-31 13:58:00 +010067 if (td->o.zone_range)
68 max_size = td->o.zone_range;
69
Jens Axboe1ae83d42013-01-12 01:44:15 -070070 max_blocks = max_size / (uint64_t) td->o.ba[ddir];
Jens Axboe2ba1c292008-02-01 13:16:38 +010071 if (!max_blocks)
72 return 0;
73
Jens Axboe67778e82008-05-15 09:20:08 +020074 return max_blocks;
Jens Axboe2ba1c292008-02-01 13:16:38 +010075}
76
Jens Axboe1ae83d42013-01-12 01:44:15 -070077struct rand_off {
78 struct flist_head list;
79 uint64_t off;
80};
81
Jens Axboee25839d2012-11-06 10:49:42 +010082static int __get_next_rand_offset(struct thread_data *td, struct fio_file *f,
Jens Axboe1ae83d42013-01-12 01:44:15 -070083 enum fio_ddir ddir, uint64_t *b)
Jens Axboeec4015d2007-03-23 08:04:27 +010084{
Jens Axboe1ae83d42013-01-12 01:44:15 -070085 uint64_t r, lastb;
Jens Axboe74776732013-01-11 14:03:25 +010086
87 lastb = last_block(td, f, ddir);
88 if (!lastb)
89 return 1;
Jens Axboeec4015d2007-03-23 08:04:27 +010090
Jens Axboe8055e412012-11-26 08:43:47 +010091 if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE) {
Jens Axboe1ae83d42013-01-12 01:44:15 -070092 uint64_t rmax;
Jens Axboe15b87722011-10-12 09:42:33 +020093
Jens Axboe8055e412012-11-26 08:43:47 +010094 rmax = td->o.use_os_rand ? OS_RAND_MAX : FRAND_MAX;
95
96 if (td->o.use_os_rand) {
97 rmax = OS_RAND_MAX;
98 r = os_random_long(&td->random_state);
99 } else {
100 rmax = FRAND_MAX;
101 r = __rand(&td->__random_state);
102 }
103
Jens Axboe4b91ee82013-02-25 10:18:33 +0100104 dprint(FD_RANDOM, "off rand %llu\n", (unsigned long long) r);
Jens Axboe8055e412012-11-26 08:43:47 +0100105
Jens Axboe1ae83d42013-01-12 01:44:15 -0700106 *b = (lastb - 1) * (r / ((uint64_t) rmax + 1.0));
Jens Axboe51ede0b2012-11-22 13:50:29 +0100107 } else {
Jens Axboe8055e412012-11-26 08:43:47 +0100108 uint64_t off = 0;
109
Jens Axboe74776732013-01-11 14:03:25 +0100110 if (lfsr_next(&f->lfsr, &off, lastb))
Jens Axboe8055e412012-11-26 08:43:47 +0100111 return 1;
112
113 *b = off;
Jens Axboe51ede0b2012-11-22 13:50:29 +0100114 }
Jens Axboe2615cc42011-03-28 09:35:09 +0200115
Jens Axboeec4015d2007-03-23 08:04:27 +0100116 /*
Jens Axboe51ede0b2012-11-22 13:50:29 +0100117 * if we are not maintaining a random map, we are done.
Jens Axboeec4015d2007-03-23 08:04:27 +0100118 */
Jens Axboe51ede0b2012-11-22 13:50:29 +0100119 if (!file_randommap(td, f))
120 goto ret;
Jens Axboe43c63a72007-05-21 13:23:30 +0200121
122 /*
Jens Axboe51ede0b2012-11-22 13:50:29 +0100123 * calculate map offset and check if it's free
Jens Axboe43c63a72007-05-21 13:23:30 +0200124 */
Jens Axboe51ede0b2012-11-22 13:50:29 +0100125 if (random_map_free(f, *b))
126 goto ret;
127
Jens Axboe4b91ee82013-02-25 10:18:33 +0100128 dprint(FD_RANDOM, "get_next_rand_offset: offset %llu busy\n",
129 (unsigned long long) *b);
Jens Axboe51ede0b2012-11-22 13:50:29 +0100130
Jens Axboe7ebd7962012-11-28 21:24:46 +0100131 *b = axmap_next_free(f->io_axmap, *b);
Jens Axboe51ede0b2012-11-22 13:50:29 +0100132 if (*b == (uint64_t) -1ULL)
133 return 1;
Jens Axboe0ce8b112011-01-27 22:25:29 +0100134ret:
135 return 0;
Jens Axboeec4015d2007-03-23 08:04:27 +0100136}
137
Jens Axboe925fee32012-11-06 13:50:32 +0100138static int __get_next_rand_offset_zipf(struct thread_data *td,
139 struct fio_file *f, enum fio_ddir ddir,
Jens Axboe1ae83d42013-01-12 01:44:15 -0700140 uint64_t *b)
Jens Axboee25839d2012-11-06 10:49:42 +0100141{
Jens Axboe9c6f6312012-11-07 09:15:45 +0100142 *b = zipf_next(&f->zipf);
Jens Axboee25839d2012-11-06 10:49:42 +0100143 return 0;
144}
145
Jens Axboe925fee32012-11-06 13:50:32 +0100146static int __get_next_rand_offset_pareto(struct thread_data *td,
147 struct fio_file *f, enum fio_ddir ddir,
Jens Axboe1ae83d42013-01-12 01:44:15 -0700148 uint64_t *b)
Jens Axboe925fee32012-11-06 13:50:32 +0100149{
Jens Axboe9c6f6312012-11-07 09:15:45 +0100150 *b = pareto_next(&f->zipf);
Jens Axboe925fee32012-11-06 13:50:32 +0100151 return 0;
152}
153
Jens Axboe1ae83d42013-01-12 01:44:15 -0700154static int flist_cmp(void *data, struct flist_head *a, struct flist_head *b)
155{
156 struct rand_off *r1 = flist_entry(a, struct rand_off, list);
157 struct rand_off *r2 = flist_entry(b, struct rand_off, list);
158
159 return r1->off - r2->off;
160}
161
162static int get_off_from_method(struct thread_data *td, struct fio_file *f,
163 enum fio_ddir ddir, uint64_t *b)
Jens Axboee25839d2012-11-06 10:49:42 +0100164{
165 if (td->o.random_distribution == FIO_RAND_DIST_RANDOM)
166 return __get_next_rand_offset(td, f, ddir, b);
167 else if (td->o.random_distribution == FIO_RAND_DIST_ZIPF)
168 return __get_next_rand_offset_zipf(td, f, ddir, b);
Jens Axboe925fee32012-11-06 13:50:32 +0100169 else if (td->o.random_distribution == FIO_RAND_DIST_PARETO)
170 return __get_next_rand_offset_pareto(td, f, ddir, b);
Jens Axboee25839d2012-11-06 10:49:42 +0100171
172 log_err("fio: unknown random distribution: %d\n", td->o.random_distribution);
173 return 1;
174}
175
Jens Axboebcd5abf2013-01-23 09:27:25 -0700176/*
177 * Sort the reads for a verify phase in batches of verifysort_nr, if
178 * specified.
179 */
180static inline int should_sort_io(struct thread_data *td)
181{
182 if (!td->o.verifysort_nr || !td->o.do_verify)
183 return 0;
184 if (!td_random(td))
185 return 0;
186 if (td->runstate != TD_VERIFYING)
187 return 0;
188 if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE)
189 return 0;
190
191 return 1;
192}
193
Jens Axboe1ae83d42013-01-12 01:44:15 -0700194static int get_next_rand_offset(struct thread_data *td, struct fio_file *f,
195 enum fio_ddir ddir, uint64_t *b)
196{
197 struct rand_off *r;
198 int i, ret = 1;
199
Jens Axboebcd5abf2013-01-23 09:27:25 -0700200 if (!should_sort_io(td))
Jens Axboe1ae83d42013-01-12 01:44:15 -0700201 return get_off_from_method(td, f, ddir, b);
202
203 if (!flist_empty(&td->next_rand_list)) {
204 struct rand_off *r;
205fetch:
206 r = flist_entry(td->next_rand_list.next, struct rand_off, list);
207 flist_del(&r->list);
208 *b = r->off;
209 free(r);
210 return 0;
211 }
212
213 for (i = 0; i < td->o.verifysort_nr; i++) {
214 r = malloc(sizeof(*r));
215
216 ret = get_off_from_method(td, f, ddir, &r->off);
217 if (ret) {
218 free(r);
219 break;
220 }
221
222 flist_add(&r->list, &td->next_rand_list);
223 }
224
225 if (ret && !i)
226 return ret;
227
228 assert(!flist_empty(&td->next_rand_list));
229 flist_sort(NULL, &td->next_rand_list, flist_cmp);
230 goto fetch;
231}
232
Jens Axboe38dad622010-07-20 14:46:00 -0600233static int get_next_rand_block(struct thread_data *td, struct fio_file *f,
Jens Axboe1ae83d42013-01-12 01:44:15 -0700234 enum fio_ddir ddir, uint64_t *b)
Jens Axboe38dad622010-07-20 14:46:00 -0600235{
Daniel Ehrenbergc04e4662012-03-16 18:54:15 +0100236 if (!get_next_rand_offset(td, f, ddir, b))
237 return 0;
238
239 if (td->o.time_based) {
Jens Axboe33c48812013-01-21 09:46:06 -0700240 fio_file_reset(td, f);
Daniel Ehrenbergc04e4662012-03-16 18:54:15 +0100241 if (!get_next_rand_offset(td, f, ddir, b))
242 return 0;
Jens Axboe38dad622010-07-20 14:46:00 -0600243 }
244
Daniel Ehrenbergc04e4662012-03-16 18:54:15 +0100245 dprint(FD_IO, "%s: rand offset failed, last=%llu, size=%llu\n",
Jens Axboe4b91ee82013-02-25 10:18:33 +0100246 f->file_name, (unsigned long long) f->last_pos,
247 (unsigned long long) f->real_file_size);
Daniel Ehrenbergc04e4662012-03-16 18:54:15 +0100248 return 1;
Jens Axboe38dad622010-07-20 14:46:00 -0600249}
250
Jens Axboe37cf9e32012-03-17 12:54:30 +0100251static int get_next_seq_offset(struct thread_data *td, struct fio_file *f,
Jens Axboe1ae83d42013-01-12 01:44:15 -0700252 enum fio_ddir ddir, uint64_t *offset)
Jens Axboe38dad622010-07-20 14:46:00 -0600253{
Jens Axboeff58fce2010-08-25 12:02:08 +0200254 assert(ddir_rw(ddir));
255
Dan Ehrenbergce95d652012-08-16 08:58:21 +0200256 if (f->last_pos >= f->io_size + get_start_offset(td) && td->o.time_based)
Daniel Ehrenbergc04e4662012-03-16 18:54:15 +0100257 f->last_pos = f->last_pos - f->io_size;
258
Jens Axboe38dad622010-07-20 14:46:00 -0600259 if (f->last_pos < f->real_file_size) {
Jens Axboe1ae83d42013-01-12 01:44:15 -0700260 uint64_t pos;
Jens Axboe059b0802011-08-25 09:09:37 +0200261
Jens Axboea66da7a2011-08-31 13:14:12 -0600262 if (f->last_pos == f->file_offset && td->o.ddir_seq_add < 0)
263 f->last_pos = f->real_file_size;
264
265 pos = f->last_pos - f->file_offset;
Jens Axboe059b0802011-08-25 09:09:37 +0200266 if (pos)
267 pos += td->o.ddir_seq_add;
268
Jens Axboe37cf9e32012-03-17 12:54:30 +0100269 *offset = pos;
Jens Axboe38dad622010-07-20 14:46:00 -0600270 return 0;
271 }
272
273 return 1;
274}
275
276static int get_next_block(struct thread_data *td, struct io_u *io_u,
Jens Axboe37cf9e32012-03-17 12:54:30 +0100277 enum fio_ddir ddir, int rw_seq)
Jens Axboe38dad622010-07-20 14:46:00 -0600278{
279 struct fio_file *f = io_u->file;
Jens Axboe1ae83d42013-01-12 01:44:15 -0700280 uint64_t b, offset;
Jens Axboe38dad622010-07-20 14:46:00 -0600281 int ret;
282
Jens Axboeff58fce2010-08-25 12:02:08 +0200283 assert(ddir_rw(ddir));
284
Jens Axboe37cf9e32012-03-17 12:54:30 +0100285 b = offset = -1ULL;
286
Jens Axboe38dad622010-07-20 14:46:00 -0600287 if (rw_seq) {
288 if (td_random(td))
Jens Axboe37cf9e32012-03-17 12:54:30 +0100289 ret = get_next_rand_block(td, f, ddir, &b);
Jens Axboe38dad622010-07-20 14:46:00 -0600290 else
Jens Axboe37cf9e32012-03-17 12:54:30 +0100291 ret = get_next_seq_offset(td, f, ddir, &offset);
Jens Axboe38dad622010-07-20 14:46:00 -0600292 } else {
293 io_u->flags |= IO_U_F_BUSY_OK;
294
295 if (td->o.rw_seq == RW_SEQ_SEQ) {
Jens Axboe37cf9e32012-03-17 12:54:30 +0100296 ret = get_next_seq_offset(td, f, ddir, &offset);
Jens Axboe38dad622010-07-20 14:46:00 -0600297 if (ret)
Jens Axboe37cf9e32012-03-17 12:54:30 +0100298 ret = get_next_rand_block(td, f, ddir, &b);
Jens Axboe38dad622010-07-20 14:46:00 -0600299 } else if (td->o.rw_seq == RW_SEQ_IDENT) {
300 if (f->last_start != -1ULL)
Jens Axboe37cf9e32012-03-17 12:54:30 +0100301 offset = f->last_start - f->file_offset;
Jens Axboe38dad622010-07-20 14:46:00 -0600302 else
Jens Axboe37cf9e32012-03-17 12:54:30 +0100303 offset = 0;
Jens Axboe38dad622010-07-20 14:46:00 -0600304 ret = 0;
305 } else {
306 log_err("fio: unknown rw_seq=%d\n", td->o.rw_seq);
307 ret = 1;
308 }
309 }
Bruce Cran6d68b992013-01-13 17:21:58 +0000310
Jens Axboe37cf9e32012-03-17 12:54:30 +0100311 if (!ret) {
312 if (offset != -1ULL)
313 io_u->offset = offset;
314 else if (b != -1ULL)
315 io_u->offset = b * td->o.ba[ddir];
316 else {
Jens Axboe51ede0b2012-11-22 13:50:29 +0100317 log_err("fio: bug in offset generation: offset=%llu, b=%llu\n",
318 offset, b);
Jens Axboe37cf9e32012-03-17 12:54:30 +0100319 ret = 1;
320 }
321 }
322
Jens Axboe38dad622010-07-20 14:46:00 -0600323 return ret;
324}
325
Jens Axboe10ba5352006-10-20 11:39:27 +0200326/*
327 * For random io, generate a random new block and see if it's used. Repeat
328 * until we find a free one. For sequential io, just return the end of
329 * the last io issued.
330 */
Jens Axboe15dc1932010-03-05 10:59:06 +0100331static int __get_next_offset(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200332{
Jens Axboe9bf20612007-03-01 09:33:57 +0100333 struct fio_file *f = io_u->file;
Jens Axboe4ba66132008-02-05 10:05:50 +0100334 enum fio_ddir ddir = io_u->ddir;
Jens Axboe38dad622010-07-20 14:46:00 -0600335 int rw_seq_hit = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200336
Jens Axboeff58fce2010-08-25 12:02:08 +0200337 assert(ddir_rw(ddir));
338
Jens Axboe38dad622010-07-20 14:46:00 -0600339 if (td->o.ddir_seq_nr && !--td->ddir_seq_nr) {
340 rw_seq_hit = 1;
Jens Axboe5736c102010-07-20 12:03:25 -0600341 td->ddir_seq_nr = td->o.ddir_seq_nr;
Jens Axboe38dad622010-07-20 14:46:00 -0600342 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200343
Jens Axboe37cf9e32012-03-17 12:54:30 +0100344 if (get_next_block(td, io_u, ddir, rw_seq_hit))
Jens Axboe38dad622010-07-20 14:46:00 -0600345 return 1;
Jens Axboe10ba5352006-10-20 11:39:27 +0200346
Jens Axboe009bd842008-05-15 10:19:46 +0200347 if (io_u->offset >= f->io_size) {
348 dprint(FD_IO, "get_next_offset: offset %llu >= io_size %llu\n",
Jens Axboe4b91ee82013-02-25 10:18:33 +0100349 (unsigned long long) io_u->offset,
350 (unsigned long long) f->io_size);
Jens Axboe009bd842008-05-15 10:19:46 +0200351 return 1;
352 }
353
354 io_u->offset += f->file_offset;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100355 if (io_u->offset >= f->real_file_size) {
356 dprint(FD_IO, "get_next_offset: offset %llu >= size %llu\n",
Jens Axboe4b91ee82013-02-25 10:18:33 +0100357 (unsigned long long) io_u->offset,
358 (unsigned long long) f->real_file_size);
Jens Axboe10ba5352006-10-20 11:39:27 +0200359 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100360 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200361
362 return 0;
363}
364
Jens Axboe15dc1932010-03-05 10:59:06 +0100365static int get_next_offset(struct thread_data *td, struct io_u *io_u)
366{
Jens Axboed72be542012-11-30 19:37:46 +0100367 if (td->flags & TD_F_PROFILE_OPS) {
368 struct prof_io_ops *ops = &td->prof_io_ops;
Jens Axboe7eb36572010-03-08 13:58:49 +0100369
Jens Axboed72be542012-11-30 19:37:46 +0100370 if (ops->fill_io_u_off)
371 return ops->fill_io_u_off(td, io_u);
372 }
Jens Axboe15dc1932010-03-05 10:59:06 +0100373
374 return __get_next_offset(td, io_u);
375}
376
Jens Axboe79944122011-05-24 11:26:16 +0200377static inline int io_u_fits(struct thread_data *td, struct io_u *io_u,
378 unsigned int buflen)
379{
380 struct fio_file *f = io_u->file;
381
Dan Ehrenbergce95d652012-08-16 08:58:21 +0200382 return io_u->offset + buflen <= f->io_size + get_start_offset(td);
Jens Axboe79944122011-05-24 11:26:16 +0200383}
384
Jens Axboe15dc1932010-03-05 10:59:06 +0100385static unsigned int __get_next_buflen(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200386{
Jens Axboebca4ed42007-02-12 05:13:23 +0100387 const int ddir = io_u->ddir;
Jens Axboe24d23ca2012-11-13 08:31:24 -0700388 unsigned int buflen = 0;
Jens Axboef3059de2008-06-11 15:37:32 +0200389 unsigned int minbs, maxbs;
Jens Axboe1294c3e2011-05-11 08:15:18 +0200390 unsigned long r, rand_max;
Jens Axboe10ba5352006-10-20 11:39:27 +0200391
Jens Axboeff58fce2010-08-25 12:02:08 +0200392 assert(ddir_rw(ddir));
393
Jens Axboef3059de2008-06-11 15:37:32 +0200394 minbs = td->o.min_bs[ddir];
395 maxbs = td->o.max_bs[ddir];
396
Jens Axboe79944122011-05-24 11:26:16 +0200397 if (minbs == maxbs)
398 return minbs;
399
Jens Axboe52c58022012-02-06 21:58:56 +0100400 /*
401 * If we can't satisfy the min block size from here, then fail
402 */
403 if (!io_u_fits(td, io_u, minbs))
404 return 0;
405
Jens Axboe4c07ad82011-03-28 09:51:09 +0200406 if (td->o.use_os_rand)
407 rand_max = OS_RAND_MAX;
408 else
409 rand_max = FRAND_MAX;
410
Jens Axboe79944122011-05-24 11:26:16 +0200411 do {
Jens Axboe4c07ad82011-03-28 09:51:09 +0200412 if (td->o.use_os_rand)
413 r = os_random_long(&td->bsrange_state);
414 else
415 r = __rand(&td->__bsrange_state);
416
Jens Axboe720e84a2009-04-21 08:29:55 +0200417 if (!td->o.bssplit_nr[ddir]) {
Jens Axboef3059de2008-06-11 15:37:32 +0200418 buflen = 1 + (unsigned int) ((double) maxbs *
Jens Axboe4c07ad82011-03-28 09:51:09 +0200419 (r / (rand_max + 1.0)));
Jens Axboef3059de2008-06-11 15:37:32 +0200420 if (buflen < minbs)
421 buflen = minbs;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100422 } else {
Jens Axboe564ca972007-12-14 12:21:19 +0100423 long perc = 0;
424 unsigned int i;
425
Jens Axboe720e84a2009-04-21 08:29:55 +0200426 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
427 struct bssplit *bsp = &td->o.bssplit[ddir][i];
Jens Axboe564ca972007-12-14 12:21:19 +0100428
429 buflen = bsp->bs;
430 perc += bsp->perc;
Jens Axboe79944122011-05-24 11:26:16 +0200431 if ((r <= ((rand_max / 100L) * perc)) &&
432 io_u_fits(td, io_u, buflen))
Jens Axboe564ca972007-12-14 12:21:19 +0100433 break;
434 }
435 }
Jens Axboe79944122011-05-24 11:26:16 +0200436
Jens Axboef3059de2008-06-11 15:37:32 +0200437 if (!td->o.bs_unaligned && is_power_of_2(minbs))
438 buflen = (buflen + minbs - 1) & ~(minbs - 1);
Jens Axboe10ba5352006-10-20 11:39:27 +0200439
Jens Axboe79944122011-05-24 11:26:16 +0200440 } while (!io_u_fits(td, io_u, buflen));
Jens Axboe6a5e6882007-07-26 10:47:51 +0200441
Jens Axboe10ba5352006-10-20 11:39:27 +0200442 return buflen;
443}
444
Jens Axboe15dc1932010-03-05 10:59:06 +0100445static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u)
446{
Jens Axboed72be542012-11-30 19:37:46 +0100447 if (td->flags & TD_F_PROFILE_OPS) {
448 struct prof_io_ops *ops = &td->prof_io_ops;
Jens Axboe7eb36572010-03-08 13:58:49 +0100449
Jens Axboed72be542012-11-30 19:37:46 +0100450 if (ops->fill_io_u_size)
451 return ops->fill_io_u_size(td, io_u);
452 }
Jens Axboe15dc1932010-03-05 10:59:06 +0100453
454 return __get_next_buflen(td, io_u);
455}
456
Jens Axboeafe24a52007-03-16 20:27:27 +0100457static void set_rwmix_bytes(struct thread_data *td)
458{
Jens Axboeafe24a52007-03-16 20:27:27 +0100459 unsigned int diff;
460
461 /*
462 * we do time or byte based switch. this is needed because
463 * buffered writes may issue a lot quicker than they complete,
464 * whereas reads do not.
465 */
Jens Axboee47f7992007-03-21 14:05:39 +0100466 diff = td->o.rwmix[td->rwmix_ddir ^ 1];
Jens Axboe04c540d2008-05-28 10:35:26 +0200467 td->rwmix_issues = (td->io_issues[td->rwmix_ddir] * diff) / 100;
Jens Axboee47f7992007-03-21 14:05:39 +0100468}
469
470static inline enum fio_ddir get_rand_ddir(struct thread_data *td)
471{
472 unsigned int v;
Jens Axboe1294c3e2011-05-11 08:15:18 +0200473 unsigned long r;
Jens Axboee47f7992007-03-21 14:05:39 +0100474
Jens Axboe4c07ad82011-03-28 09:51:09 +0200475 if (td->o.use_os_rand) {
476 r = os_random_long(&td->rwmix_state);
477 v = 1 + (int) (100.0 * (r / (OS_RAND_MAX + 1.0)));
478 } else {
479 r = __rand(&td->__rwmix_state);
480 v = 1 + (int) (100.0 * (r / (FRAND_MAX + 1.0)));
481 }
482
Jens Axboe04c540d2008-05-28 10:35:26 +0200483 if (v <= td->o.rwmix[DDIR_READ])
Jens Axboee47f7992007-03-21 14:05:39 +0100484 return DDIR_READ;
485
486 return DDIR_WRITE;
Jens Axboeafe24a52007-03-16 20:27:27 +0100487}
488
Jens Axboe581e7142009-06-09 12:47:16 +0200489static enum fio_ddir rate_ddir(struct thread_data *td, enum fio_ddir ddir)
490{
491 enum fio_ddir odir = ddir ^ 1;
492 struct timeval t;
493 long usec;
494
Jens Axboeff58fce2010-08-25 12:02:08 +0200495 assert(ddir_rw(ddir));
496
Jens Axboe315fcfe2013-02-08 19:05:25 +0100497 if (td->rate_pending_usleep[ddir] <= 0)
Jens Axboe581e7142009-06-09 12:47:16 +0200498 return ddir;
499
500 /*
501 * We have too much pending sleep in this direction. See if we
502 * should switch.
503 */
Jens Axboe315fcfe2013-02-08 19:05:25 +0100504 if (td_rw(td) && td->o.rwmix[odir]) {
Jens Axboe581e7142009-06-09 12:47:16 +0200505 /*
506 * Other direction does not have too much pending, switch
507 */
508 if (td->rate_pending_usleep[odir] < 100000)
509 return odir;
510
511 /*
512 * Both directions have pending sleep. Sleep the minimum time
513 * and deduct from both.
514 */
515 if (td->rate_pending_usleep[ddir] <=
516 td->rate_pending_usleep[odir]) {
517 usec = td->rate_pending_usleep[ddir];
518 } else {
519 usec = td->rate_pending_usleep[odir];
520 ddir = odir;
521 }
522 } else
523 usec = td->rate_pending_usleep[ddir];
524
Jens Axboe78c1eda2011-08-30 15:34:14 -0600525 /*
526 * We are going to sleep, ensure that we flush anything pending as
Ryan Marchand422f9e42012-01-31 14:05:32 +0100527 * not to skew our latency numbers.
528 *
529 * Changed to only monitor 'in flight' requests here instead of the
530 * td->cur_depth, b/c td->cur_depth does not accurately represent
531 * io's that have been actually submitted to an async engine,
532 * and cur_depth is meaningless for sync engines.
Jens Axboe78c1eda2011-08-30 15:34:14 -0600533 */
SEOKYOUNG KOc3a1b742013-03-07 12:34:31 +0100534 while (td->io_u_in_flight) {
Jens Axboe78c1eda2011-08-30 15:34:14 -0600535 int fio_unused ret;
536
SEOKYOUNG KOc3a1b742013-03-07 12:34:31 +0100537 ret = io_u_queued_complete(td, 1, NULL);
Jens Axboe78c1eda2011-08-30 15:34:14 -0600538 }
539
Jens Axboe581e7142009-06-09 12:47:16 +0200540 fio_gettime(&t, NULL);
541 usec_sleep(td, usec);
542 usec = utime_since_now(&t);
543
544 td->rate_pending_usleep[ddir] -= usec;
545
546 odir = ddir ^ 1;
547 if (td_rw(td) && __should_check_rate(td, odir))
548 td->rate_pending_usleep[odir] -= usec;
Jens Axboe0b9d69e2009-09-11 22:29:54 +0200549
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200550 if (ddir_trim(ddir))
551 return ddir;
Jens Axboee0224c62013-02-07 19:55:24 +0100552
Jens Axboe581e7142009-06-09 12:47:16 +0200553 return ddir;
554}
555
Jens Axboe10ba5352006-10-20 11:39:27 +0200556/*
557 * Return the data direction for the next io_u. If the job is a
558 * mixed read/write workload, check the rwmix cycle and switch if
559 * necessary.
560 */
Jens Axboe1e97cce2006-12-05 11:44:16 +0100561static enum fio_ddir get_rw_ddir(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200562{
Jens Axboe581e7142009-06-09 12:47:16 +0200563 enum fio_ddir ddir;
564
Jens Axboe5f9099e2009-06-16 22:40:26 +0200565 /*
566 * see if it's time to fsync
567 */
568 if (td->o.fsync_blocks &&
569 !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) &&
570 td->io_issues[DDIR_WRITE] && should_fsync(td))
571 return DDIR_SYNC;
572
573 /*
574 * see if it's time to fdatasync
575 */
576 if (td->o.fdatasync_blocks &&
577 !(td->io_issues[DDIR_WRITE] % td->o.fdatasync_blocks) &&
578 td->io_issues[DDIR_WRITE] && should_fsync(td))
579 return DDIR_DATASYNC;
580
Jens Axboe44f29692010-03-09 20:09:44 +0100581 /*
582 * see if it's time to sync_file_range
583 */
584 if (td->sync_file_range_nr &&
585 !(td->io_issues[DDIR_WRITE] % td->sync_file_range_nr) &&
586 td->io_issues[DDIR_WRITE] && should_fsync(td))
587 return DDIR_SYNC_FILE_RANGE;
588
Jens Axboe10ba5352006-10-20 11:39:27 +0200589 if (td_rw(td)) {
Jens Axboe10ba5352006-10-20 11:39:27 +0200590 /*
591 * Check if it's time to seed a new data direction.
592 */
Jens Axboee4928662008-04-07 09:19:46 +0200593 if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) {
Jens Axboee47f7992007-03-21 14:05:39 +0100594 /*
595 * Put a top limit on how many bytes we do for
596 * one data direction, to avoid overflowing the
597 * ranges too much
598 */
599 ddir = get_rand_ddir(td);
Jens Axboee47f7992007-03-21 14:05:39 +0100600
601 if (ddir != td->rwmix_ddir)
602 set_rwmix_bytes(td);
603
604 td->rwmix_ddir = ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200605 }
Jens Axboe581e7142009-06-09 12:47:16 +0200606 ddir = td->rwmix_ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200607 } else if (td_read(td))
Jens Axboe581e7142009-06-09 12:47:16 +0200608 ddir = DDIR_READ;
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200609 else if (td_write(td))
Jens Axboe581e7142009-06-09 12:47:16 +0200610 ddir = DDIR_WRITE;
Shaohua Li6eaf09d2012-09-14 08:49:43 +0200611 else
612 ddir = DDIR_TRIM;
Jens Axboe581e7142009-06-09 12:47:16 +0200613
614 td->rwmix_ddir = rate_ddir(td, ddir);
615 return td->rwmix_ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200616}
617
Jens Axboe1ef2b6b2010-10-08 15:07:01 +0200618static void set_rw_ddir(struct thread_data *td, struct io_u *io_u)
619{
Jens Axboebcd5abf2013-01-23 09:27:25 -0700620 io_u->ddir = io_u->acct_ddir = get_rw_ddir(td);
Jens Axboe1ef2b6b2010-10-08 15:07:01 +0200621
622 if (io_u->ddir == DDIR_WRITE && (td->io_ops->flags & FIO_BARRIER) &&
623 td->o.barrier_blocks &&
624 !(td->io_issues[DDIR_WRITE] % td->o.barrier_blocks) &&
625 td->io_issues[DDIR_WRITE])
626 io_u->flags |= IO_U_F_BARRIER;
627}
628
Jens Axboee8462bd2009-07-06 12:59:04 +0200629void put_file_log(struct thread_data *td, struct fio_file *f)
Jens Axboe60f2c652008-05-16 12:31:36 +0200630{
631 int ret = put_file(td, f);
632
633 if (ret)
634 td_verror(td, ret, "file close");
635}
636
Jens Axboe10ba5352006-10-20 11:39:27 +0200637void put_io_u(struct thread_data *td, struct io_u *io_u)
638{
Jens Axboee8462bd2009-07-06 12:59:04 +0200639 td_io_u_lock(td);
640
Steven Langd7ee2a72011-10-26 09:46:50 +0200641 if (io_u->file && !(io_u->flags & IO_U_F_FREE_DEF))
Jens Axboe60f2c652008-05-16 12:31:36 +0200642 put_file_log(td, io_u->file);
Jens Axboe10ba5352006-10-20 11:39:27 +0200643 io_u->file = NULL;
Steven Langd7ee2a72011-10-26 09:46:50 +0200644 io_u->flags &= ~IO_U_F_FREE_DEF;
645 io_u->flags |= IO_U_F_FREE;
646
Radha Ramachandran0c412142009-11-03 21:45:31 +0100647 if (io_u->flags & IO_U_F_IN_CUR_DEPTH)
648 td->cur_depth--;
Jens Axboee8462bd2009-07-06 12:59:04 +0200649 flist_del_init(&io_u->list);
Jens Axboe01743ee2008-06-02 12:19:19 +0200650 flist_add(&io_u->list, &td->io_u_freelist);
Jens Axboee8462bd2009-07-06 12:59:04 +0200651 td_io_u_unlock(td);
652 td_io_u_free_notify(td);
Jens Axboe10ba5352006-10-20 11:39:27 +0200653}
654
Radha Ramachandranf2bba182009-06-15 08:40:16 +0200655void clear_io_u(struct thread_data *td, struct io_u *io_u)
656{
657 io_u->flags &= ~IO_U_F_FLIGHT;
658 put_io_u(td, io_u);
659}
660
Jens Axboe755200a2007-02-19 13:08:12 +0100661void requeue_io_u(struct thread_data *td, struct io_u **io_u)
662{
663 struct io_u *__io_u = *io_u;
Jens Axboebcd5abf2013-01-23 09:27:25 -0700664 enum fio_ddir ddir = acct_ddir(__io_u);
Jens Axboe755200a2007-02-19 13:08:12 +0100665
Jens Axboe465221b2008-05-30 22:07:49 +0200666 dprint(FD_IO, "requeue %p\n", __io_u);
667
Jens Axboee8462bd2009-07-06 12:59:04 +0200668 td_io_u_lock(td);
669
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100670 __io_u->flags |= IO_U_F_FREE;
Jens Axboebcd5abf2013-01-23 09:27:25 -0700671 if ((__io_u->flags & IO_U_F_FLIGHT) && ddir_rw(ddir))
672 td->io_issues[ddir]--;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100673
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100674 __io_u->flags &= ~IO_U_F_FLIGHT;
Radha Ramachandran0c412142009-11-03 21:45:31 +0100675 if (__io_u->flags & IO_U_F_IN_CUR_DEPTH)
676 td->cur_depth--;
Jens Axboe01743ee2008-06-02 12:19:19 +0200677 flist_del(&__io_u->list);
678 flist_add_tail(&__io_u->list, &td->io_u_requeues);
Jens Axboee8462bd2009-07-06 12:59:04 +0200679 td_io_u_unlock(td);
Jens Axboe755200a2007-02-19 13:08:12 +0100680 *io_u = NULL;
681}
682
Jens Axboe9bf20612007-03-01 09:33:57 +0100683static int fill_io_u(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200684{
Jens Axboeb4c5e1a2007-10-25 18:44:45 +0200685 if (td->io_ops->flags & FIO_NOIO)
686 goto out;
687
Jens Axboe1ef2b6b2010-10-08 15:07:01 +0200688 set_rw_ddir(td, io_u);
Jens Axboea00735e2006-11-03 08:58:08 +0100689
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200690 /*
Jens Axboeff58fce2010-08-25 12:02:08 +0200691 * fsync() or fdatasync() or trim etc, we are done
Jens Axboe5f9099e2009-06-16 22:40:26 +0200692 */
Jens Axboeff58fce2010-08-25 12:02:08 +0200693 if (!ddir_rw(io_u->ddir))
Jens Axboe5f9099e2009-06-16 22:40:26 +0200694 goto out;
695
696 /*
Jens Axboe48f5abd2007-07-20 13:25:04 +0200697 * See if it's time to switch to a new zone
698 */
Jens Axboe13af05a2012-02-11 09:04:02 +0100699 if (td->zone_bytes >= td->o.zone_size && td->o.zone_skip) {
Jens Axboe48f5abd2007-07-20 13:25:04 +0200700 td->zone_bytes = 0;
Steven Noonaned335852012-01-31 13:58:00 +0100701 io_u->file->file_offset += td->o.zone_range + td->o.zone_skip;
702 io_u->file->last_pos = io_u->file->file_offset;
Jens Axboe48f5abd2007-07-20 13:25:04 +0200703 td->io_skip_bytes += td->o.zone_skip;
704 }
705
706 /*
Jens Axboec685b5b2007-02-10 20:02:28 +0100707 * No log, let the seq/rand engine retrieve the next buflen and
708 * position.
Jens Axboe10ba5352006-10-20 11:39:27 +0200709 */
Jens Axboe2ba1c292008-02-01 13:16:38 +0100710 if (get_next_offset(td, io_u)) {
711 dprint(FD_IO, "io_u %p, failed getting offset\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100712 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100713 }
Jens Axboec685b5b2007-02-10 20:02:28 +0100714
Jens Axboe9bf20612007-03-01 09:33:57 +0100715 io_u->buflen = get_next_buflen(td, io_u);
Jens Axboe2ba1c292008-02-01 13:16:38 +0100716 if (!io_u->buflen) {
717 dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100718 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100719 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200720
Jens Axboe2ba1c292008-02-01 13:16:38 +0100721 if (io_u->offset + io_u->buflen > io_u->file->real_file_size) {
722 dprint(FD_IO, "io_u %p, offset too large\n", io_u);
Jens Axboe4b91ee82013-02-25 10:18:33 +0100723 dprint(FD_IO, " off=%llu/%lu > %llu\n",
724 (unsigned long long) io_u->offset, io_u->buflen,
725 (unsigned long long) io_u->file->real_file_size);
Jens Axboe6a5e6882007-07-26 10:47:51 +0200726 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100727 }
Jens Axboe6a5e6882007-07-26 10:47:51 +0200728
Jens Axboebca4ed42007-02-12 05:13:23 +0100729 /*
730 * mark entry before potentially trimming io_u
731 */
Jens Axboe303032a2008-03-26 10:11:10 +0100732 if (td_random(td) && file_randommap(td, io_u->file))
Jens Axboe9bf20612007-03-01 09:33:57 +0100733 mark_random_map(td, io_u);
Jens Axboe10ba5352006-10-20 11:39:27 +0200734
Jens Axboec38e9462007-03-27 08:48:48 +0200735out:
Jens Axboe2ba1c292008-02-01 13:16:38 +0100736 dprint_io_u(io_u, "fill_io_u");
Jens Axboed9d91e32008-01-31 13:25:42 +0100737 td->zone_bytes += io_u->buflen;
Jens Axboebca4ed42007-02-12 05:13:23 +0100738 return 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200739}
740
Jens Axboe838bc702008-05-22 13:08:23 +0200741static void __io_u_mark_map(unsigned int *map, unsigned int nr)
742{
Jens Axboe2b13e712011-01-19 14:04:16 -0700743 int idx = 0;
Jens Axboe838bc702008-05-22 13:08:23 +0200744
745 switch (nr) {
746 default:
Jens Axboe2b13e712011-01-19 14:04:16 -0700747 idx = 6;
Jens Axboe838bc702008-05-22 13:08:23 +0200748 break;
749 case 33 ... 64:
Jens Axboe2b13e712011-01-19 14:04:16 -0700750 idx = 5;
Jens Axboe838bc702008-05-22 13:08:23 +0200751 break;
752 case 17 ... 32:
Jens Axboe2b13e712011-01-19 14:04:16 -0700753 idx = 4;
Jens Axboe838bc702008-05-22 13:08:23 +0200754 break;
755 case 9 ... 16:
Jens Axboe2b13e712011-01-19 14:04:16 -0700756 idx = 3;
Jens Axboe838bc702008-05-22 13:08:23 +0200757 break;
758 case 5 ... 8:
Jens Axboe2b13e712011-01-19 14:04:16 -0700759 idx = 2;
Jens Axboe838bc702008-05-22 13:08:23 +0200760 break;
761 case 1 ... 4:
Jens Axboe2b13e712011-01-19 14:04:16 -0700762 idx = 1;
Jens Axboe838bc702008-05-22 13:08:23 +0200763 case 0:
764 break;
765 }
766
Jens Axboe2b13e712011-01-19 14:04:16 -0700767 map[idx]++;
Jens Axboe838bc702008-05-22 13:08:23 +0200768}
769
770void io_u_mark_submit(struct thread_data *td, unsigned int nr)
771{
772 __io_u_mark_map(td->ts.io_u_submit, nr);
773 td->ts.total_submit++;
774}
775
776void io_u_mark_complete(struct thread_data *td, unsigned int nr)
777{
778 __io_u_mark_map(td->ts.io_u_complete, nr);
779 td->ts.total_complete++;
780}
781
Jens Axboed8005752008-05-15 09:49:09 +0200782void io_u_mark_depth(struct thread_data *td, unsigned int nr)
Jens Axboe71619dc2007-01-13 23:56:33 +0100783{
Jens Axboe2b13e712011-01-19 14:04:16 -0700784 int idx = 0;
Jens Axboe71619dc2007-01-13 23:56:33 +0100785
786 switch (td->cur_depth) {
787 default:
Jens Axboe2b13e712011-01-19 14:04:16 -0700788 idx = 6;
Jens Axboea783e612007-06-19 09:50:28 +0200789 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100790 case 32 ... 63:
Jens Axboe2b13e712011-01-19 14:04:16 -0700791 idx = 5;
Jens Axboea783e612007-06-19 09:50:28 +0200792 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100793 case 16 ... 31:
Jens Axboe2b13e712011-01-19 14:04:16 -0700794 idx = 4;
Jens Axboea783e612007-06-19 09:50:28 +0200795 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100796 case 8 ... 15:
Jens Axboe2b13e712011-01-19 14:04:16 -0700797 idx = 3;
Jens Axboea783e612007-06-19 09:50:28 +0200798 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100799 case 4 ... 7:
Jens Axboe2b13e712011-01-19 14:04:16 -0700800 idx = 2;
Jens Axboea783e612007-06-19 09:50:28 +0200801 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100802 case 2 ... 3:
Jens Axboe2b13e712011-01-19 14:04:16 -0700803 idx = 1;
Jens Axboe71619dc2007-01-13 23:56:33 +0100804 case 1:
805 break;
806 }
807
Jens Axboe2b13e712011-01-19 14:04:16 -0700808 td->ts.io_u_map[idx] += nr;
Jens Axboe71619dc2007-01-13 23:56:33 +0100809}
810
Jens Axboe04a0fea2007-06-19 12:48:41 +0200811static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec)
812{
Jens Axboe2b13e712011-01-19 14:04:16 -0700813 int idx = 0;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200814
815 assert(usec < 1000);
816
817 switch (usec) {
818 case 750 ... 999:
Jens Axboe2b13e712011-01-19 14:04:16 -0700819 idx = 9;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200820 break;
821 case 500 ... 749:
Jens Axboe2b13e712011-01-19 14:04:16 -0700822 idx = 8;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200823 break;
824 case 250 ... 499:
Jens Axboe2b13e712011-01-19 14:04:16 -0700825 idx = 7;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200826 break;
827 case 100 ... 249:
Jens Axboe2b13e712011-01-19 14:04:16 -0700828 idx = 6;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200829 break;
830 case 50 ... 99:
Jens Axboe2b13e712011-01-19 14:04:16 -0700831 idx = 5;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200832 break;
833 case 20 ... 49:
Jens Axboe2b13e712011-01-19 14:04:16 -0700834 idx = 4;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200835 break;
836 case 10 ... 19:
Jens Axboe2b13e712011-01-19 14:04:16 -0700837 idx = 3;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200838 break;
839 case 4 ... 9:
Jens Axboe2b13e712011-01-19 14:04:16 -0700840 idx = 2;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200841 break;
842 case 2 ... 3:
Jens Axboe2b13e712011-01-19 14:04:16 -0700843 idx = 1;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200844 case 0 ... 1:
845 break;
846 }
847
Jens Axboe2b13e712011-01-19 14:04:16 -0700848 assert(idx < FIO_IO_U_LAT_U_NR);
849 td->ts.io_u_lat_u[idx]++;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200850}
851
852static void io_u_mark_lat_msec(struct thread_data *td, unsigned long msec)
Jens Axboeec118302007-02-17 04:38:20 +0100853{
Jens Axboe2b13e712011-01-19 14:04:16 -0700854 int idx = 0;
Jens Axboeec118302007-02-17 04:38:20 +0100855
856 switch (msec) {
857 default:
Jens Axboe2b13e712011-01-19 14:04:16 -0700858 idx = 11;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200859 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100860 case 1000 ... 1999:
Jens Axboe2b13e712011-01-19 14:04:16 -0700861 idx = 10;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200862 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100863 case 750 ... 999:
Jens Axboe2b13e712011-01-19 14:04:16 -0700864 idx = 9;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200865 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100866 case 500 ... 749:
Jens Axboe2b13e712011-01-19 14:04:16 -0700867 idx = 8;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200868 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100869 case 250 ... 499:
Jens Axboe2b13e712011-01-19 14:04:16 -0700870 idx = 7;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200871 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100872 case 100 ... 249:
Jens Axboe2b13e712011-01-19 14:04:16 -0700873 idx = 6;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200874 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100875 case 50 ... 99:
Jens Axboe2b13e712011-01-19 14:04:16 -0700876 idx = 5;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200877 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100878 case 20 ... 49:
Jens Axboe2b13e712011-01-19 14:04:16 -0700879 idx = 4;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200880 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100881 case 10 ... 19:
Jens Axboe2b13e712011-01-19 14:04:16 -0700882 idx = 3;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200883 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100884 case 4 ... 9:
Jens Axboe2b13e712011-01-19 14:04:16 -0700885 idx = 2;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200886 break;
Jens Axboeec118302007-02-17 04:38:20 +0100887 case 2 ... 3:
Jens Axboe2b13e712011-01-19 14:04:16 -0700888 idx = 1;
Jens Axboeec118302007-02-17 04:38:20 +0100889 case 0 ... 1:
890 break;
891 }
892
Jens Axboe2b13e712011-01-19 14:04:16 -0700893 assert(idx < FIO_IO_U_LAT_M_NR);
894 td->ts.io_u_lat_m[idx]++;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200895}
896
897static void io_u_mark_latency(struct thread_data *td, unsigned long usec)
898{
899 if (usec < 1000)
900 io_u_mark_lat_usec(td, usec);
901 else
902 io_u_mark_lat_msec(td, usec / 1000);
Jens Axboeec118302007-02-17 04:38:20 +0100903}
904
Jens Axboe0aabe162007-02-23 08:45:55 +0100905/*
906 * Get next file to service by choosing one at random
907 */
Jens Axboe2cc52932009-06-09 14:14:20 +0200908static struct fio_file *get_next_file_rand(struct thread_data *td,
909 enum fio_file_flags goodf,
Jens Axboed6aed792009-06-03 08:41:15 +0200910 enum fio_file_flags badf)
Jens Axboe0aabe162007-02-23 08:45:55 +0100911{
Jens Axboe0aabe162007-02-23 08:45:55 +0100912 struct fio_file *f;
Jens Axboe1c178182007-03-13 13:25:18 +0100913 int fno;
Jens Axboe0aabe162007-02-23 08:45:55 +0100914
915 do {
Jens Axboe87b10672009-03-04 09:39:47 +0100916 int opened = 0;
Jens Axboe1294c3e2011-05-11 08:15:18 +0200917 unsigned long r;
Jens Axboe7c83c082007-03-01 10:04:15 +0100918
Jens Axboe4c07ad82011-03-28 09:51:09 +0200919 if (td->o.use_os_rand) {
920 r = os_random_long(&td->next_file_state);
921 fno = (unsigned int) ((double) td->o.nr_files
922 * (r / (OS_RAND_MAX + 1.0)));
923 } else {
924 r = __rand(&td->__next_file_state);
925 fno = (unsigned int) ((double) td->o.nr_files
926 * (r / (FRAND_MAX + 1.0)));
927 }
928
Jens Axboe126d65c2008-03-01 18:04:31 +0100929 f = td->files[fno];
Jens Axboed6aed792009-06-03 08:41:15 +0200930 if (fio_file_done(f))
Jens Axboe059e63c2007-03-27 20:34:47 +0200931 continue;
Jens Axboe1c178182007-03-13 13:25:18 +0100932
Jens Axboed6aed792009-06-03 08:41:15 +0200933 if (!fio_file_open(f)) {
Jens Axboe87b10672009-03-04 09:39:47 +0100934 int err;
935
936 err = td_io_open_file(td, f);
937 if (err)
938 continue;
939 opened = 1;
940 }
941
Jens Axboe2ba1c292008-02-01 13:16:38 +0100942 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) {
943 dprint(FD_FILE, "get_next_file_rand: %p\n", f);
Jens Axboe0aabe162007-02-23 08:45:55 +0100944 return f;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100945 }
Jens Axboe87b10672009-03-04 09:39:47 +0100946 if (opened)
947 td_io_close_file(td, f);
Jens Axboe0aabe162007-02-23 08:45:55 +0100948 } while (1);
949}
950
951/*
952 * Get next file to service by doing round robin between all available ones
953 */
Jens Axboe1c178182007-03-13 13:25:18 +0100954static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf,
955 int badf)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100956{
957 unsigned int old_next_file = td->next_file;
958 struct fio_file *f;
959
960 do {
Jens Axboe87b10672009-03-04 09:39:47 +0100961 int opened = 0;
962
Jens Axboe126d65c2008-03-01 18:04:31 +0100963 f = td->files[td->next_file];
Jens Axboe3d7c3912007-02-19 13:16:12 +0100964
965 td->next_file++;
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100966 if (td->next_file >= td->o.nr_files)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100967 td->next_file = 0;
968
Jens Axboe87b10672009-03-04 09:39:47 +0100969 dprint(FD_FILE, "trying file %s %x\n", f->file_name, f->flags);
Jens Axboed6aed792009-06-03 08:41:15 +0200970 if (fio_file_done(f)) {
Jens Axboed5ed68e2007-03-28 09:33:43 +0200971 f = NULL;
Jens Axboe059e63c2007-03-27 20:34:47 +0200972 continue;
Jens Axboed5ed68e2007-03-28 09:33:43 +0200973 }
Jens Axboe059e63c2007-03-27 20:34:47 +0200974
Jens Axboed6aed792009-06-03 08:41:15 +0200975 if (!fio_file_open(f)) {
Jens Axboe87b10672009-03-04 09:39:47 +0100976 int err;
977
978 err = td_io_open_file(td, f);
Jens Axboeb5696bf2009-03-04 16:03:49 +0100979 if (err) {
980 dprint(FD_FILE, "error %d on open of %s\n",
981 err, f->file_name);
Jens Axboe87c27b42009-05-20 10:45:12 +0200982 f = NULL;
Jens Axboe87b10672009-03-04 09:39:47 +0100983 continue;
Jens Axboeb5696bf2009-03-04 16:03:49 +0100984 }
Jens Axboe87b10672009-03-04 09:39:47 +0100985 opened = 1;
986 }
987
Jens Axboe0b9d69e2009-09-11 22:29:54 +0200988 dprint(FD_FILE, "goodf=%x, badf=%x, ff=%x\n", goodf, badf,
989 f->flags);
Jens Axboe1c178182007-03-13 13:25:18 +0100990 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
Jens Axboe3d7c3912007-02-19 13:16:12 +0100991 break;
992
Jens Axboe87b10672009-03-04 09:39:47 +0100993 if (opened)
994 td_io_close_file(td, f);
995
Jens Axboe3d7c3912007-02-19 13:16:12 +0100996 f = NULL;
997 } while (td->next_file != old_next_file);
998
Jens Axboe2ba1c292008-02-01 13:16:38 +0100999 dprint(FD_FILE, "get_next_file_rr: %p\n", f);
Jens Axboe3d7c3912007-02-19 13:16:12 +01001000 return f;
1001}
1002
Jens Axboe7eb36572010-03-08 13:58:49 +01001003static struct fio_file *__get_next_file(struct thread_data *td)
Jens Axboebdb4e2e2007-03-01 09:54:57 +01001004{
Jens Axboe1907dbc2007-03-12 11:44:28 +01001005 struct fio_file *f;
1006
Jens Axboe2dc1bbe2007-03-15 15:01:33 +01001007 assert(td->o.nr_files <= td->files_index);
Jens Axboe1c178182007-03-13 13:25:18 +01001008
Jens Axboeb5696bf2009-03-04 16:03:49 +01001009 if (td->nr_done_files >= td->o.nr_files) {
Jens Axboe5ec10ea2008-03-06 15:42:00 +01001010 dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d,"
1011 " nr_files=%d\n", td->nr_open_files,
1012 td->nr_done_files,
1013 td->o.nr_files);
Jens Axboebdb4e2e2007-03-01 09:54:57 +01001014 return NULL;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001015 }
Jens Axboebdb4e2e2007-03-01 09:54:57 +01001016
Jens Axboe1907dbc2007-03-12 11:44:28 +01001017 f = td->file_service_file;
Jens Axboed6aed792009-06-03 08:41:15 +02001018 if (f && fio_file_open(f) && !fio_file_closing(f)) {
Jens Axboea086c252009-03-04 08:27:37 +01001019 if (td->o.file_service_type == FIO_FSERVICE_SEQ)
1020 goto out;
1021 if (td->file_service_left--)
1022 goto out;
1023 }
Jens Axboe1907dbc2007-03-12 11:44:28 +01001024
Jens Axboea086c252009-03-04 08:27:37 +01001025 if (td->o.file_service_type == FIO_FSERVICE_RR ||
1026 td->o.file_service_type == FIO_FSERVICE_SEQ)
Jens Axboed6aed792009-06-03 08:41:15 +02001027 f = get_next_file_rr(td, FIO_FILE_open, FIO_FILE_closing);
Jens Axboebdb4e2e2007-03-01 09:54:57 +01001028 else
Jens Axboed6aed792009-06-03 08:41:15 +02001029 f = get_next_file_rand(td, FIO_FILE_open, FIO_FILE_closing);
Jens Axboe1907dbc2007-03-12 11:44:28 +01001030
1031 td->file_service_file = f;
1032 td->file_service_left = td->file_service_nr - 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001033out:
Jens Axboe683023e2009-03-04 08:41:31 +01001034 dprint(FD_FILE, "get_next_file: %p [%s]\n", f, f->file_name);
Jens Axboe1907dbc2007-03-12 11:44:28 +01001035 return f;
Jens Axboebdb4e2e2007-03-01 09:54:57 +01001036}
1037
Jens Axboe7eb36572010-03-08 13:58:49 +01001038static struct fio_file *get_next_file(struct thread_data *td)
1039{
Jens Axboed72be542012-11-30 19:37:46 +01001040 if (!(td->flags & TD_F_PROFILE_OPS)) {
1041 struct prof_io_ops *ops = &td->prof_io_ops;
Jens Axboe7eb36572010-03-08 13:58:49 +01001042
Jens Axboed72be542012-11-30 19:37:46 +01001043 if (ops->get_next_file)
1044 return ops->get_next_file(td);
1045 }
Jens Axboe7eb36572010-03-08 13:58:49 +01001046
1047 return __get_next_file(td);
1048}
1049
Jens Axboe429f6672007-07-23 10:38:43 +02001050static int set_io_u_file(struct thread_data *td, struct io_u *io_u)
1051{
1052 struct fio_file *f;
1053
1054 do {
1055 f = get_next_file(td);
1056 if (!f)
1057 return 1;
1058
Jens Axboe429f6672007-07-23 10:38:43 +02001059 io_u->file = f;
1060 get_file(f);
1061
1062 if (!fill_io_u(td, io_u))
1063 break;
1064
Jens Axboeb5696bf2009-03-04 16:03:49 +01001065 put_file_log(td, f);
Jens Axboe429f6672007-07-23 10:38:43 +02001066 td_io_close_file(td, f);
Jens Axboeb5696bf2009-03-04 16:03:49 +01001067 io_u->file = NULL;
Jens Axboed6aed792009-06-03 08:41:15 +02001068 fio_file_set_done(f);
Jens Axboe429f6672007-07-23 10:38:43 +02001069 td->nr_done_files++;
Jens Axboe0b9d69e2009-09-11 22:29:54 +02001070 dprint(FD_FILE, "%s: is done (%d of %d)\n", f->file_name,
1071 td->nr_done_files, td->o.nr_files);
Jens Axboe429f6672007-07-23 10:38:43 +02001072 } while (1);
1073
1074 return 0;
1075}
1076
1077
Jens Axboe10ba5352006-10-20 11:39:27 +02001078struct io_u *__get_io_u(struct thread_data *td)
1079{
1080 struct io_u *io_u = NULL;
1081
Jens Axboee8462bd2009-07-06 12:59:04 +02001082 td_io_u_lock(td);
1083
1084again:
Jens Axboe01743ee2008-06-02 12:19:19 +02001085 if (!flist_empty(&td->io_u_requeues))
1086 io_u = flist_entry(td->io_u_requeues.next, struct io_u, list);
Jens Axboe755200a2007-02-19 13:08:12 +01001087 else if (!queue_full(td)) {
Jens Axboe01743ee2008-06-02 12:19:19 +02001088 io_u = flist_entry(td->io_u_freelist.next, struct io_u, list);
Jens Axboe10ba5352006-10-20 11:39:27 +02001089
Jens Axboe6040dab2006-10-24 19:38:15 +02001090 io_u->buflen = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +02001091 io_u->resid = 0;
Jens Axboe755200a2007-02-19 13:08:12 +01001092 io_u->file = NULL;
Jens Axboed7762cf2007-02-23 12:34:57 +01001093 io_u->end_io = NULL;
Jens Axboe755200a2007-02-19 13:08:12 +01001094 }
1095
1096 if (io_u) {
Jens Axboe0c6e7512007-02-22 11:19:39 +01001097 assert(io_u->flags & IO_U_F_FREE);
Jens Axboe2ecc1b52009-11-04 20:58:09 +01001098 io_u->flags &= ~(IO_U_F_FREE | IO_U_F_FREE_DEF);
Jens Axboe1ef2b6b2010-10-08 15:07:01 +02001099 io_u->flags &= ~(IO_U_F_TRIMMED | IO_U_F_BARRIER);
Jens Axboe82af2a72012-03-13 13:45:58 +01001100 io_u->flags &= ~IO_U_F_VER_LIST;
Jens Axboe0c6e7512007-02-22 11:19:39 +01001101
Jens Axboe755200a2007-02-19 13:08:12 +01001102 io_u->error = 0;
Jens Axboebcd5abf2013-01-23 09:27:25 -07001103 io_u->acct_ddir = -1;
Jens Axboe01743ee2008-06-02 12:19:19 +02001104 flist_del(&io_u->list);
Bruce Cran94c63722012-10-10 08:15:58 -06001105 flist_add_tail(&io_u->list, &td->io_u_busylist);
Jens Axboe10ba5352006-10-20 11:39:27 +02001106 td->cur_depth++;
Radha Ramachandran0c412142009-11-03 21:45:31 +01001107 io_u->flags |= IO_U_F_IN_CUR_DEPTH;
Jens Axboe1dec3e02010-03-19 10:33:39 +01001108 } else if (td->o.verify_async) {
1109 /*
1110 * We ran out, wait for async verify threads to finish and
1111 * return one
1112 */
1113 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1114 goto again;
Jens Axboe10ba5352006-10-20 11:39:27 +02001115 }
1116
Jens Axboee8462bd2009-07-06 12:59:04 +02001117 td_io_u_unlock(td);
Jens Axboe10ba5352006-10-20 11:39:27 +02001118 return io_u;
1119}
1120
Jens Axboe0d29de82010-09-01 13:54:15 +02001121static int check_get_trim(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +02001122{
Jens Axboed72be542012-11-30 19:37:46 +01001123 if (!(td->flags & TD_F_TRIM_BACKLOG))
1124 return 0;
1125
1126 if (td->trim_entries) {
Jens Axboe0d29de82010-09-01 13:54:15 +02001127 int get_trim = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +02001128
Jens Axboe0d29de82010-09-01 13:54:15 +02001129 if (td->trim_batch) {
1130 td->trim_batch--;
1131 get_trim = 1;
1132 } else if (!(td->io_hist_len % td->o.trim_backlog) &&
1133 td->last_ddir != DDIR_READ) {
1134 td->trim_batch = td->o.trim_batch;
1135 if (!td->trim_batch)
1136 td->trim_batch = td->o.trim_backlog;
1137 get_trim = 1;
1138 }
1139
1140 if (get_trim && !get_next_trim(td, io_u))
1141 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001142 }
Jens Axboe10ba5352006-10-20 11:39:27 +02001143
Jens Axboe0d29de82010-09-01 13:54:15 +02001144 return 0;
1145}
1146
1147static int check_get_verify(struct thread_data *td, struct io_u *io_u)
1148{
Jens Axboed72be542012-11-30 19:37:46 +01001149 if (!(td->flags & TD_F_VER_BACKLOG))
1150 return 0;
1151
1152 if (td->io_hist_len) {
Jens Axboe9e144182010-06-15 14:25:36 +02001153 int get_verify = 0;
1154
Jens Axboed1ece0c2012-03-07 09:32:58 +01001155 if (td->verify_batch)
Jens Axboe9e144182010-06-15 14:25:36 +02001156 get_verify = 1;
Jens Axboed1ece0c2012-03-07 09:32:58 +01001157 else if (!(td->io_hist_len % td->o.verify_backlog) &&
Jens Axboe9e144182010-06-15 14:25:36 +02001158 td->last_ddir != DDIR_READ) {
1159 td->verify_batch = td->o.verify_batch;
Jens Axboef8a75c92010-06-15 14:27:28 +02001160 if (!td->verify_batch)
1161 td->verify_batch = td->o.verify_backlog;
Jens Axboe9e144182010-06-15 14:25:36 +02001162 get_verify = 1;
1163 }
1164
Jens Axboed1ece0c2012-03-07 09:32:58 +01001165 if (get_verify && !get_next_verify(td, io_u)) {
1166 td->verify_batch--;
Jens Axboe0d29de82010-09-01 13:54:15 +02001167 return 1;
Jens Axboed1ece0c2012-03-07 09:32:58 +01001168 }
Jens Axboe9e144182010-06-15 14:25:36 +02001169 }
1170
Jens Axboe0d29de82010-09-01 13:54:15 +02001171 return 0;
1172}
1173
1174/*
Jens Axboede789762011-09-16 22:11:23 +02001175 * Fill offset and start time into the buffer content, to prevent too
Jens Axboe23f394d2011-09-16 22:45:27 +02001176 * easy compressible data for simple de-dupe attempts. Do this for every
1177 * 512b block in the range, since that should be the smallest block size
1178 * we can expect from a device.
Jens Axboede789762011-09-16 22:11:23 +02001179 */
1180static void small_content_scramble(struct io_u *io_u)
1181{
Jens Axboe23f394d2011-09-16 22:45:27 +02001182 unsigned int i, nr_blocks = io_u->buflen / 512;
Jens Axboe1ae83d42013-01-12 01:44:15 -07001183 uint64_t boffset;
Jens Axboe23f394d2011-09-16 22:45:27 +02001184 unsigned int offset;
1185 void *p, *end;
Jens Axboede789762011-09-16 22:11:23 +02001186
Jens Axboe23f394d2011-09-16 22:45:27 +02001187 if (!nr_blocks)
1188 return;
1189
1190 p = io_u->xfer_buf;
Jens Axboefba76ee2011-09-27 14:27:48 -06001191 boffset = io_u->offset;
Jens Axboe81f03662012-02-02 09:20:09 +01001192 io_u->buf_filled_len = 0;
Jens Axboefad82f72011-09-19 11:33:30 +02001193
Jens Axboe23f394d2011-09-16 22:45:27 +02001194 for (i = 0; i < nr_blocks; i++) {
1195 /*
1196 * Fill the byte offset into a "random" start offset of
1197 * the buffer, given by the product of the usec time
1198 * and the actual offset.
1199 */
Jens Axboefad82f72011-09-19 11:33:30 +02001200 offset = (io_u->start_time.tv_usec ^ boffset) & 511;
Jens Axboe1ae83d42013-01-12 01:44:15 -07001201 offset &= ~(sizeof(uint64_t) - 1);
1202 if (offset >= 512 - sizeof(uint64_t))
1203 offset -= sizeof(uint64_t);
Jens Axboefba76ee2011-09-27 14:27:48 -06001204 memcpy(p + offset, &boffset, sizeof(boffset));
Jens Axboe23f394d2011-09-16 22:45:27 +02001205
1206 end = p + 512 - sizeof(io_u->start_time);
1207 memcpy(end, &io_u->start_time, sizeof(io_u->start_time));
1208 p += 512;
Jens Axboefad82f72011-09-19 11:33:30 +02001209 boffset += 512;
Jens Axboe23f394d2011-09-16 22:45:27 +02001210 }
Jens Axboede789762011-09-16 22:11:23 +02001211}
1212
1213/*
Jens Axboe0d29de82010-09-01 13:54:15 +02001214 * Return an io_u to be processed. Gets a buflen and offset, sets direction,
1215 * etc. The returned io_u is fully ready to be prepped and submitted.
1216 */
1217struct io_u *get_io_u(struct thread_data *td)
1218{
1219 struct fio_file *f;
1220 struct io_u *io_u;
Jens Axboede789762011-09-16 22:11:23 +02001221 int do_scramble = 0;
Jens Axboe0d29de82010-09-01 13:54:15 +02001222
1223 io_u = __get_io_u(td);
1224 if (!io_u) {
1225 dprint(FD_IO, "__get_io_u failed\n");
1226 return NULL;
1227 }
1228
1229 if (check_get_verify(td, io_u))
1230 goto out;
1231 if (check_get_trim(td, io_u))
1232 goto out;
1233
Jens Axboe755200a2007-02-19 13:08:12 +01001234 /*
1235 * from a requeue, io_u already setup
1236 */
1237 if (io_u->file)
Jens Axboe77f392b2007-02-19 20:13:09 +01001238 goto out;
Jens Axboe755200a2007-02-19 13:08:12 +01001239
Jens Axboe429f6672007-07-23 10:38:43 +02001240 /*
1241 * If using an iolog, grab next piece if any available.
1242 */
Jens Axboed72be542012-11-30 19:37:46 +01001243 if (td->flags & TD_F_READ_IOLOG) {
Jens Axboe429f6672007-07-23 10:38:43 +02001244 if (read_iolog_get(td, io_u))
1245 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001246 } else if (set_io_u_file(td, io_u)) {
1247 dprint(FD_IO, "io_u %p, setting file failed\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +02001248 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001249 }
Jens Axboe5ec10ea2008-03-06 15:42:00 +01001250
Jens Axboe429f6672007-07-23 10:38:43 +02001251 f = io_u->file;
Jens Axboed6aed792009-06-03 08:41:15 +02001252 assert(fio_file_open(f));
Jens Axboe97af62c2007-05-22 11:12:13 +02001253
Jens Axboeff58fce2010-08-25 12:02:08 +02001254 if (ddir_rw(io_u->ddir)) {
Jens Axboed0656a92008-02-01 18:33:23 +01001255 if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) {
Jens Axboe2ba1c292008-02-01 13:16:38 +01001256 dprint(FD_IO, "get_io_u: zero buflen on %p\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +02001257 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001258 }
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001259
Jens Axboe38dad622010-07-20 14:46:00 -06001260 f->last_start = io_u->offset;
Jens Axboe36167d82007-02-18 05:41:31 +01001261 f->last_pos = io_u->offset + io_u->buflen;
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001262
Jens Axboefd684182011-09-19 09:24:44 +02001263 if (io_u->ddir == DDIR_WRITE) {
Jens Axboed72be542012-11-30 19:37:46 +01001264 if (td->flags & TD_F_REFILL_BUFFERS) {
Jens Axboe9c426842012-03-02 21:02:12 +01001265 io_u_fill_buffer(td, io_u,
1266 io_u->xfer_buflen, io_u->xfer_buflen);
Jens Axboed72be542012-11-30 19:37:46 +01001267 } else if (td->flags & TD_F_SCRAMBLE_BUFFERS)
Jens Axboefd684182011-09-19 09:24:44 +02001268 do_scramble = 1;
Jens Axboed72be542012-11-30 19:37:46 +01001269 if (td->flags & TD_F_VER_NONE) {
Jens Axboe629f1d72012-03-09 19:02:01 +01001270 populate_verify_io_u(td, io_u);
1271 do_scramble = 0;
1272 }
Jens Axboefd684182011-09-19 09:24:44 +02001273 } else if (io_u->ddir == DDIR_READ) {
Radha Ramachandrancbe8d752010-07-14 08:36:07 +02001274 /*
1275 * Reset the buf_filled parameters so next time if the
1276 * buffer is used for writes it is refilled.
1277 */
Radha Ramachandrancbe8d752010-07-14 08:36:07 +02001278 io_u->buf_filled_len = 0;
1279 }
Jens Axboe10ba5352006-10-20 11:39:27 +02001280 }
1281
Jens Axboe165faf12007-02-07 11:30:37 +01001282 /*
1283 * Set io data pointers.
1284 */
Jens Axboecec6b552007-02-06 20:15:38 +01001285 io_u->xfer_buf = io_u->buf;
1286 io_u->xfer_buflen = io_u->buflen;
Jens Axboe5973caf2008-05-21 19:52:35 +02001287
Jens Axboe6ac7a332008-03-01 15:22:32 +01001288out:
Jens Axboe0d29de82010-09-01 13:54:15 +02001289 assert(io_u->file);
Jens Axboe429f6672007-07-23 10:38:43 +02001290 if (!td_io_prep(td, io_u)) {
Jens Axboe993bf482008-11-14 13:04:53 +01001291 if (!td->o.disable_slat)
1292 fio_gettime(&io_u->start_time, NULL);
Jens Axboede789762011-09-16 22:11:23 +02001293 if (do_scramble)
1294 small_content_scramble(io_u);
Jens Axboe429f6672007-07-23 10:38:43 +02001295 return io_u;
Jens Axboe36167d82007-02-18 05:41:31 +01001296 }
Jens Axboe429f6672007-07-23 10:38:43 +02001297err_put:
Jens Axboe2ba1c292008-02-01 13:16:38 +01001298 dprint(FD_IO, "get_io_u failed\n");
Jens Axboe429f6672007-07-23 10:38:43 +02001299 put_io_u(td, io_u);
1300 return NULL;
Jens Axboe10ba5352006-10-20 11:39:27 +02001301}
1302
Jens Axboe54517922007-03-05 10:06:06 +01001303void io_u_log_error(struct thread_data *td, struct io_u *io_u)
1304{
Dmitry Monakhov8b28bd42012-09-23 15:46:09 +04001305 enum error_type_bit eb = td_error_type(io_u->ddir, io_u->error);
Jens Axboe825f8182010-08-25 10:47:18 +02001306 const char *msg[] = { "read", "write", "sync", "datasync",
1307 "sync_file_range", "wait", "trim" };
1308
Dmitry Monakhov8b28bd42012-09-23 15:46:09 +04001309 if (td_non_fatal_error(td, eb, io_u->error) && !td->o.error_dump)
1310 return;
Jens Axboe54517922007-03-05 10:06:06 +01001311
1312 log_err("fio: io_u error");
1313
1314 if (io_u->file)
1315 log_err(" on file %s", io_u->file->file_name);
1316
1317 log_err(": %s\n", strerror(io_u->error));
1318
Jens Axboe5ec10ea2008-03-06 15:42:00 +01001319 log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir],
1320 io_u->offset, io_u->xfer_buflen);
Jens Axboe54517922007-03-05 10:06:06 +01001321
1322 if (!td->error)
1323 td_verror(td, io_u->error, "io_u error");
1324}
1325
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001326static void account_io_completion(struct thread_data *td, struct io_u *io_u,
1327 struct io_completion_data *icd,
1328 const enum fio_ddir idx, unsigned int bytes)
1329{
Jens Axboe24d23ca2012-11-13 08:31:24 -07001330 unsigned long lusec = 0;
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001331
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001332 if (!td->o.disable_clat || !td->o.disable_bw)
1333 lusec = utime_since(&io_u->issue_time, &icd->time);
1334
1335 if (!td->o.disable_lat) {
1336 unsigned long tusec;
1337
1338 tusec = utime_since(&io_u->start_time, &icd->time);
1339 add_lat_sample(td, idx, tusec, bytes);
Jens Axboe15501532012-10-24 16:37:45 +02001340
1341 if (td->o.max_latency && tusec > td->o.max_latency) {
1342 if (!td->error)
1343 log_err("fio: latency of %lu usec exceeds specified max (%u usec)\n", tusec, td->o.max_latency);
Jens Axboec5b3adc2012-11-08 21:38:35 +01001344 td_verror(td, ETIMEDOUT, "max latency exceeded");
1345 icd->error = ETIMEDOUT;
Jens Axboe15501532012-10-24 16:37:45 +02001346 }
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001347 }
1348
1349 if (!td->o.disable_clat) {
1350 add_clat_sample(td, idx, lusec, bytes);
1351 io_u_mark_latency(td, lusec);
1352 }
1353
1354 if (!td->o.disable_bw)
1355 add_bw_sample(td, idx, bytes, &icd->time);
1356
1357 add_iops_sample(td, idx, &icd->time);
1358}
1359
Steven Lang1b8dbf22011-11-09 13:48:01 +01001360static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
1361{
Jens Axboe1ae83d42013-01-12 01:44:15 -07001362 uint64_t secs, remainder, bps, bytes;
1363
Steven Lang1b8dbf22011-11-09 13:48:01 +01001364 bytes = td->this_io_bytes[ddir];
1365 bps = td->rate_bps[ddir];
1366 secs = bytes / bps;
1367 remainder = bytes % bps;
1368 return remainder * 1000000 / bps + secs * 1000000;
1369}
1370
Jens Axboe97601022007-02-18 12:47:29 +01001371static void io_completed(struct thread_data *td, struct io_u *io_u,
1372 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +02001373{
Jens Axboe44f29692010-03-09 20:09:44 +01001374 struct fio_file *f;
Jens Axboe10ba5352006-10-20 11:39:27 +02001375
Jens Axboe2ba1c292008-02-01 13:16:38 +01001376 dprint_io_u(io_u, "io complete");
1377
Jens Axboe2ecc1b52009-11-04 20:58:09 +01001378 td_io_u_lock(td);
Jens Axboe0c6e7512007-02-22 11:19:39 +01001379 assert(io_u->flags & IO_U_F_FLIGHT);
Jens Axboe38dad622010-07-20 14:46:00 -06001380 io_u->flags &= ~(IO_U_F_FLIGHT | IO_U_F_BUSY_OK);
Jens Axboe2ecc1b52009-11-04 20:58:09 +01001381 td_io_u_unlock(td);
Jens Axboe0c6e7512007-02-22 11:19:39 +01001382
Jens Axboe5f9099e2009-06-16 22:40:26 +02001383 if (ddir_sync(io_u->ddir)) {
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001384 td->last_was_sync = 1;
Jens Axboe44f29692010-03-09 20:09:44 +01001385 f = io_u->file;
1386 if (f) {
1387 f->first_write = -1ULL;
1388 f->last_write = -1ULL;
1389 }
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001390 return;
1391 }
1392
1393 td->last_was_sync = 0;
Jens Axboe9e144182010-06-15 14:25:36 +02001394 td->last_ddir = io_u->ddir;
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001395
Jens Axboeff58fce2010-08-25 12:02:08 +02001396 if (!io_u->error && ddir_rw(io_u->ddir)) {
Jens Axboe10ba5352006-10-20 11:39:27 +02001397 unsigned int bytes = io_u->buflen - io_u->resid;
Jens Axboe1e97cce2006-12-05 11:44:16 +01001398 const enum fio_ddir idx = io_u->ddir;
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001399 const enum fio_ddir odx = io_u->ddir ^ 1;
Jens Axboeb29ee5b2008-09-11 10:17:26 +02001400 int ret;
Jens Axboe10ba5352006-10-20 11:39:27 +02001401
Jens Axboeb29ee5b2008-09-11 10:17:26 +02001402 td->io_blocks[idx]++;
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001403 td->this_io_blocks[idx]++;
Jens Axboeb29ee5b2008-09-11 10:17:26 +02001404 td->io_bytes[idx] += bytes;
webeeae2fafc2012-03-23 13:41:41 +01001405
1406 if (!(io_u->flags & IO_U_F_VER_LIST))
1407 td->this_io_bytes[idx] += bytes;
Jens Axboe10ba5352006-10-20 11:39:27 +02001408
Jens Axboe44f29692010-03-09 20:09:44 +01001409 if (idx == DDIR_WRITE) {
1410 f = io_u->file;
1411 if (f) {
1412 if (f->first_write == -1ULL ||
1413 io_u->offset < f->first_write)
1414 f->first_write = io_u->offset;
1415 if (f->last_write == -1ULL ||
1416 ((io_u->offset + bytes) > f->last_write))
1417 f->last_write = io_u->offset + bytes;
1418 }
1419 }
1420
Steven Lang6b1190f2012-02-07 09:42:59 +01001421 if (ramp_time_over(td) && (td->runstate == TD_RUNNING ||
1422 td->runstate == TD_VERIFYING)) {
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001423 account_io_completion(td, io_u, icd, idx, bytes);
Jens Axboe40e1a6f2009-06-11 10:55:39 +02001424
Jens Axboeb23b6a22009-06-11 22:06:23 +02001425 if (__should_check_rate(td, idx)) {
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001426 td->rate_pending_usleep[idx] =
Steven Lang1b8dbf22011-11-09 13:48:01 +01001427 (usec_for_io(td, idx) -
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001428 utime_since_now(&td->start));
Jens Axboeb23b6a22009-06-11 22:06:23 +02001429 }
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001430 if (idx != DDIR_TRIM && __should_check_rate(td, odx))
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001431 td->rate_pending_usleep[odx] =
Steven Lang1b8dbf22011-11-09 13:48:01 +01001432 (usec_for_io(td, odx) -
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001433 utime_since_now(&td->start));
Jens Axboe721938a2008-09-10 09:46:16 +02001434 }
Jens Axboe10ba5352006-10-20 11:39:27 +02001435
Jens Axboe660a1cb2007-04-17 15:37:47 +02001436 if (td_write(td) && idx == DDIR_WRITE &&
Shawn Lewis86705792007-11-21 09:35:41 +01001437 td->o.do_verify &&
Jens Axboe44cbc6d2013-01-21 09:47:03 -07001438 td->o.verify != VERIFY_NONE &&
1439 !td->o.experimental_verify)
Jens Axboe10ba5352006-10-20 11:39:27 +02001440 log_io_piece(td, io_u);
1441
Jens Axboeb29ee5b2008-09-11 10:17:26 +02001442 icd->bytes_done[idx] += bytes;
Jens Axboe3af6ef32007-02-18 06:57:43 +01001443
Jens Axboed7762cf2007-02-23 12:34:57 +01001444 if (io_u->end_io) {
Jens Axboe36690c92007-03-26 10:23:34 +02001445 ret = io_u->end_io(td, io_u);
Jens Axboe3af6ef32007-02-18 06:57:43 +01001446 if (ret && !icd->error)
1447 icd->error = ret;
1448 }
Jens Axboeff58fce2010-08-25 12:02:08 +02001449 } else if (io_u->error) {
Jens Axboe10ba5352006-10-20 11:39:27 +02001450 icd->error = io_u->error;
Jens Axboe54517922007-03-05 10:06:06 +01001451 io_u_log_error(td, io_u);
1452 }
Dmitry Monakhov8b28bd42012-09-23 15:46:09 +04001453 if (icd->error) {
1454 enum error_type_bit eb = td_error_type(io_u->ddir, icd->error);
1455 if (!td_non_fatal_error(td, eb, icd->error))
1456 return;
Radha Ramachandranf2bba182009-06-15 08:40:16 +02001457 /*
1458 * If there is a non_fatal error, then add to the error count
1459 * and clear all the errors.
1460 */
1461 update_error_count(td, icd->error);
1462 td_clear_error(td);
1463 icd->error = 0;
1464 io_u->error = 0;
1465 }
Jens Axboe10ba5352006-10-20 11:39:27 +02001466}
1467
Jens Axboe9520ebb2008-10-16 21:03:27 +02001468static void init_icd(struct thread_data *td, struct io_completion_data *icd,
1469 int nr)
Jens Axboe36167d82007-02-18 05:41:31 +01001470{
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001471 int ddir;
Jens Axboe9520ebb2008-10-16 21:03:27 +02001472 if (!td->o.disable_clat || !td->o.disable_bw)
1473 fio_gettime(&icd->time, NULL);
Jens Axboe36167d82007-02-18 05:41:31 +01001474
Jens Axboe3af6ef32007-02-18 06:57:43 +01001475 icd->nr = nr;
1476
Jens Axboe36167d82007-02-18 05:41:31 +01001477 icd->error = 0;
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001478 for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++)
1479 icd->bytes_done[ddir] = 0;
Jens Axboe36167d82007-02-18 05:41:31 +01001480}
1481
Jens Axboe97601022007-02-18 12:47:29 +01001482static void ios_completed(struct thread_data *td,
1483 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +02001484{
1485 struct io_u *io_u;
1486 int i;
1487
Jens Axboe10ba5352006-10-20 11:39:27 +02001488 for (i = 0; i < icd->nr; i++) {
1489 io_u = td->io_ops->event(td, i);
1490
1491 io_completed(td, io_u, icd);
Jens Axboee8462bd2009-07-06 12:59:04 +02001492
1493 if (!(io_u->flags & IO_U_F_FREE_DEF))
1494 put_io_u(td, io_u);
Jens Axboe10ba5352006-10-20 11:39:27 +02001495 }
1496}
Jens Axboe97601022007-02-18 12:47:29 +01001497
Jens Axboee7e6cfb2007-02-20 10:58:34 +01001498/*
1499 * Complete a single io_u for the sync engines.
1500 */
Jens Axboe581e7142009-06-09 12:47:16 +02001501int io_u_sync_complete(struct thread_data *td, struct io_u *io_u,
Jens Axboe100f49f2013-01-23 10:15:57 -07001502 uint64_t *bytes)
Jens Axboe97601022007-02-18 12:47:29 +01001503{
1504 struct io_completion_data icd;
1505
Jens Axboe9520ebb2008-10-16 21:03:27 +02001506 init_icd(td, &icd, 1);
Jens Axboe97601022007-02-18 12:47:29 +01001507 io_completed(td, io_u, &icd);
Jens Axboee8462bd2009-07-06 12:59:04 +02001508
1509 if (!(io_u->flags & IO_U_F_FREE_DEF))
1510 put_io_u(td, io_u);
Jens Axboe97601022007-02-18 12:47:29 +01001511
Jens Axboe581e7142009-06-09 12:47:16 +02001512 if (icd.error) {
1513 td_verror(td, icd.error, "io_u_sync_complete");
1514 return -1;
1515 }
Jens Axboe97601022007-02-18 12:47:29 +01001516
Jens Axboe581e7142009-06-09 12:47:16 +02001517 if (bytes) {
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001518 int ddir;
1519
1520 for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++)
1521 bytes[ddir] += icd.bytes_done[ddir];
Jens Axboe581e7142009-06-09 12:47:16 +02001522 }
1523
1524 return 0;
Jens Axboe97601022007-02-18 12:47:29 +01001525}
1526
Jens Axboee7e6cfb2007-02-20 10:58:34 +01001527/*
1528 * Called to complete min_events number of io for the async engines.
1529 */
Jens Axboe581e7142009-06-09 12:47:16 +02001530int io_u_queued_complete(struct thread_data *td, int min_evts,
Jens Axboe100f49f2013-01-23 10:15:57 -07001531 uint64_t *bytes)
Jens Axboe97601022007-02-18 12:47:29 +01001532{
Jens Axboe97601022007-02-18 12:47:29 +01001533 struct io_completion_data icd;
Jens Axboe00de55e2007-02-20 10:45:57 +01001534 struct timespec *tvp = NULL;
Jens Axboe97601022007-02-18 12:47:29 +01001535 int ret;
Davide Libenzi4d06a332007-03-22 07:43:50 +01001536 struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, };
Jens Axboe97601022007-02-18 12:47:29 +01001537
Jens Axboe49504212008-06-05 09:03:30 +02001538 dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts);
Jens Axboeb271fe62008-02-04 10:49:41 +01001539
Jens Axboe49504212008-06-05 09:03:30 +02001540 if (!min_evts)
Jens Axboe00de55e2007-02-20 10:45:57 +01001541 tvp = &ts;
Jens Axboe97601022007-02-18 12:47:29 +01001542
Jens Axboe49504212008-06-05 09:03:30 +02001543 ret = td_io_getevents(td, min_evts, td->o.iodepth_batch_complete, tvp);
Jens Axboe97601022007-02-18 12:47:29 +01001544 if (ret < 0) {
Jens Axboee1161c32007-02-22 19:36:48 +01001545 td_verror(td, -ret, "td_io_getevents");
Jens Axboe97601022007-02-18 12:47:29 +01001546 return ret;
1547 } else if (!ret)
1548 return ret;
1549
Jens Axboe9520ebb2008-10-16 21:03:27 +02001550 init_icd(td, &icd, ret);
Jens Axboe97601022007-02-18 12:47:29 +01001551 ios_completed(td, &icd);
Jens Axboe581e7142009-06-09 12:47:16 +02001552 if (icd.error) {
1553 td_verror(td, icd.error, "io_u_queued_complete");
1554 return -1;
1555 }
Jens Axboe97601022007-02-18 12:47:29 +01001556
Jens Axboe581e7142009-06-09 12:47:16 +02001557 if (bytes) {
Shaohua Li6eaf09d2012-09-14 08:49:43 +02001558 int ddir;
1559
1560 for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++)
1561 bytes[ddir] += icd.bytes_done[ddir];
Jens Axboe581e7142009-06-09 12:47:16 +02001562 }
1563
1564 return 0;
Jens Axboe97601022007-02-18 12:47:29 +01001565}
Jens Axboe7e77dd02007-02-20 10:57:34 +01001566
1567/*
1568 * Call when io_u is really queued, to update the submission latency.
1569 */
1570void io_u_queued(struct thread_data *td, struct io_u *io_u)
1571{
Jens Axboe9520ebb2008-10-16 21:03:27 +02001572 if (!td->o.disable_slat) {
1573 unsigned long slat_time;
Jens Axboe7e77dd02007-02-20 10:57:34 +01001574
Jens Axboe9520ebb2008-10-16 21:03:27 +02001575 slat_time = utime_since(&io_u->start_time, &io_u->issue_time);
Jens Axboe29a90dd2009-06-10 06:57:47 +02001576 add_slat_sample(td, io_u->ddir, slat_time, io_u->xfer_buflen);
Jens Axboe9520ebb2008-10-16 21:03:27 +02001577 }
Jens Axboe7e77dd02007-02-20 10:57:34 +01001578}
Jens Axboe433afcb2007-02-22 10:39:01 +01001579
Jens Axboe5973caf2008-05-21 19:52:35 +02001580/*
1581 * "randomly" fill the buffer contents
1582 */
1583void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u,
Jens Axboe9c426842012-03-02 21:02:12 +01001584 unsigned int min_write, unsigned int max_bs)
Jens Axboe5973caf2008-05-21 19:52:35 +02001585{
Jens Axboee84b3712011-01-16 08:32:08 -07001586 io_u->buf_filled_len = 0;
1587
Jens Axboe9c426842012-03-02 21:02:12 +01001588 if (!td->o.zero_buffers) {
1589 unsigned int perc = td->o.compress_percentage;
1590
1591 if (perc) {
Jens Axboef97a43a2012-03-09 19:06:24 +01001592 unsigned int seg = min_write;
1593
1594 seg = min(min_write, td->o.compress_chunk);
Jens Axboe9c426842012-03-02 21:02:12 +01001595 fill_random_buf_percentage(&td->buf_state, io_u->buf,
Jens Axboef97a43a2012-03-09 19:06:24 +01001596 perc, seg, max_bs);
Jens Axboe9c426842012-03-02 21:02:12 +01001597 } else
1598 fill_random_buf(&td->buf_state, io_u->buf, max_bs);
1599 } else
Jens Axboe637ef8d2010-06-21 20:39:38 +02001600 memset(io_u->buf, 0, max_bs);
Jens Axboe5973caf2008-05-21 19:52:35 +02001601}