blob: 8a033485e7cf9eee2adbb893ab2d13bd2695dde0 [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 Axboe10ba5352006-10-20 11:39:27 +020013
Jens Axboe97601022007-02-18 12:47:29 +010014struct io_completion_data {
15 int nr; /* input */
Jens Axboec8eeb9d2011-10-05 14:02:22 +020016 int account; /* input */
Jens Axboe97601022007-02-18 12:47:29 +010017
18 int error; /* output */
19 unsigned long bytes_done[2]; /* output */
20 struct timeval time; /* output */
21};
22
Jens Axboe10ba5352006-10-20 11:39:27 +020023/*
24 * The ->file_map[] contains a map of blocks we have or have not done io
25 * to yet. Used to make sure we cover the entire range in a fair fashion.
26 */
Jens Axboeaec2de22008-04-24 12:44:42 +020027static int random_map_free(struct fio_file *f, const unsigned long long block)
Jens Axboe10ba5352006-10-20 11:39:27 +020028{
Jens Axboeaec2de22008-04-24 12:44:42 +020029 unsigned int idx = RAND_MAP_IDX(f, block);
30 unsigned int bit = RAND_MAP_BIT(f, block);
Jens Axboe10ba5352006-10-20 11:39:27 +020031
Jens Axboe84422ac2008-02-19 20:10:26 +010032 dprint(FD_RANDOM, "free: b=%llu, idx=%u, bit=%u\n", block, idx, bit);
33
Jens Axboe0ce8b112011-01-27 22:25:29 +010034 return (f->file_map[idx] & (1UL << bit)) == 0;
Jens Axboe10ba5352006-10-20 11:39:27 +020035}
36
37/*
Jens Axboedf415582006-10-20 11:41:03 +020038 * Mark a given offset as used in the map.
39 */
Jens Axboe9bf20612007-03-01 09:33:57 +010040static void mark_random_map(struct thread_data *td, struct io_u *io_u)
Jens Axboedf415582006-10-20 11:41:03 +020041{
Jens Axboe2dc1bbe2007-03-15 15:01:33 +010042 unsigned int min_bs = td->o.rw_min_bs;
Jens Axboe9bf20612007-03-01 09:33:57 +010043 struct fio_file *f = io_u->file;
Jens Axboea00735e2006-11-03 08:58:08 +010044 unsigned long long block;
Jens Axboe3e3357b2008-06-02 09:53:05 +020045 unsigned int blocks, nr_blocks;
Jens Axboe38dad622010-07-20 14:46:00 -060046 int busy_check;
Jens Axboedf415582006-10-20 11:41:03 +020047
Jens Axboeb9c5b642008-02-18 14:13:08 +010048 block = (io_u->offset - f->file_offset) / (unsigned long long) min_bs;
Jens Axboec685b5b2007-02-10 20:02:28 +010049 nr_blocks = (io_u->buflen + min_bs - 1) / min_bs;
Jens Axboe3e3357b2008-06-02 09:53:05 +020050 blocks = 0;
Jens Axboe38dad622010-07-20 14:46:00 -060051 busy_check = !(io_u->flags & IO_U_F_BUSY_OK);
Jens Axboec685b5b2007-02-10 20:02:28 +010052
Jens Axboe3e3357b2008-06-02 09:53:05 +020053 while (nr_blocks) {
Jens Axboedf415582006-10-20 11:41:03 +020054 unsigned int idx, bit;
Jens Axboe0ce8b112011-01-27 22:25:29 +010055 unsigned long mask, this_blocks;
Jens Axboedf415582006-10-20 11:41:03 +020056
Jens Axboe1e3d53a2007-03-22 19:01:48 +010057 /*
58 * If we have a mixed random workload, we may
59 * encounter blocks we already did IO to.
60 */
Jens Axboe38dad622010-07-20 14:46:00 -060061 if (!busy_check) {
62 blocks = nr_blocks;
63 break;
64 }
Jens Axboe5736c102010-07-20 12:03:25 -060065 if ((td->o.ddir_seq_nr == 1) && !random_map_free(f, block))
Jens Axboedf415582006-10-20 11:41:03 +020066 break;
67
Jens Axboeaec2de22008-04-24 12:44:42 +020068 idx = RAND_MAP_IDX(f, block);
69 bit = RAND_MAP_BIT(f, block);
Jens Axboedf415582006-10-20 11:41:03 +020070
Jens Axboe0032bf92007-02-13 17:39:56 +010071 fio_assert(td, idx < f->num_maps);
Jens Axboedf415582006-10-20 11:41:03 +020072
Jens Axboe3e3357b2008-06-02 09:53:05 +020073 this_blocks = nr_blocks;
74 if (this_blocks + bit > BLOCKS_PER_MAP)
75 this_blocks = BLOCKS_PER_MAP - bit;
76
Jens Axboeda3758b2010-06-17 21:27:11 +020077 do {
78 if (this_blocks == BLOCKS_PER_MAP)
Jens Axboe0ce8b112011-01-27 22:25:29 +010079 mask = -1UL;
Jens Axboeda3758b2010-06-17 21:27:11 +020080 else
Jens Axboe0ce8b112011-01-27 22:25:29 +010081 mask = ((1UL << this_blocks) - 1) << bit;
Jens Axboeda3758b2010-06-17 21:27:11 +020082
83 if (!(f->file_map[idx] & mask))
84 break;
85
86 this_blocks--;
87 } while (this_blocks);
88
89 if (!this_blocks)
90 break;
Jens Axboe3e3357b2008-06-02 09:53:05 +020091
Jens Axboe3e3357b2008-06-02 09:53:05 +020092 f->file_map[idx] |= mask;
93 nr_blocks -= this_blocks;
94 blocks += this_blocks;
Jens Axboec9dd34b2008-06-02 10:09:43 +020095 block += this_blocks;
Jens Axboedf415582006-10-20 11:41:03 +020096 }
97
Jens Axboea00735e2006-11-03 08:58:08 +010098 if ((blocks * min_bs) < io_u->buflen)
99 io_u->buflen = blocks * min_bs;
Jens Axboedf415582006-10-20 11:41:03 +0200100}
101
Jens Axboe3e3357b2008-06-02 09:53:05 +0200102static unsigned long long last_block(struct thread_data *td, struct fio_file *f,
103 enum fio_ddir ddir)
Jens Axboe2ba1c292008-02-01 13:16:38 +0100104{
105 unsigned long long max_blocks;
Jens Axboed9dd70f2008-05-23 12:37:23 +0200106 unsigned long long max_size;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100107
Jens Axboeff58fce2010-08-25 12:02:08 +0200108 assert(ddir_rw(ddir));
109
Jens Axboed9dd70f2008-05-23 12:37:23 +0200110 /*
111 * Hmm, should we make sure that ->io_size <= ->real_file_size?
112 */
113 max_size = f->io_size;
114 if (max_size > f->real_file_size)
115 max_size = f->real_file_size;
116
Steven Noonaned335852012-01-31 13:58:00 +0100117 if (td->o.zone_range)
118 max_size = td->o.zone_range;
119
Jens Axboe2b7a01d2009-03-11 11:00:13 +0100120 max_blocks = max_size / (unsigned long long) td->o.ba[ddir];
Jens Axboe2ba1c292008-02-01 13:16:38 +0100121 if (!max_blocks)
122 return 0;
123
Jens Axboe67778e82008-05-15 09:20:08 +0200124 return max_blocks;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100125}
126
Jens Axboedf415582006-10-20 11:41:03 +0200127/*
Jens Axboe10ba5352006-10-20 11:39:27 +0200128 * Return the next free block in the map.
129 */
130static int get_next_free_block(struct thread_data *td, struct fio_file *f,
Jens Axboe4ba66132008-02-05 10:05:50 +0100131 enum fio_ddir ddir, unsigned long long *b)
Jens Axboe10ba5352006-10-20 11:39:27 +0200132{
Jens Axboe0ce8b112011-01-27 22:25:29 +0100133 unsigned long long block, min_bs = td->o.rw_min_bs, lastb;
Jens Axboe10ba5352006-10-20 11:39:27 +0200134 int i;
135
Jens Axboe5e0baa72010-10-20 11:14:57 +0200136 lastb = last_block(td, f, ddir);
137 if (!lastb)
138 return 1;
139
Jens Axboec685b5b2007-02-10 20:02:28 +0100140 i = f->last_free_lookup;
Jens Axboe0ce8b112011-01-27 22:25:29 +0100141 block = i * BLOCKS_PER_MAP;
142 while (block * min_bs < f->real_file_size &&
143 block * min_bs < f->io_size) {
144 if (f->file_map[i] != -1UL) {
145 block += ffz(f->file_map[i]);
146 if (block > lastb)
Jens Axboe2ba1c292008-02-01 13:16:38 +0100147 break;
Jens Axboec685b5b2007-02-10 20:02:28 +0100148 f->last_free_lookup = i;
Jens Axboe0ce8b112011-01-27 22:25:29 +0100149 *b = block;
Jens Axboe10ba5352006-10-20 11:39:27 +0200150 return 0;
151 }
152
Jens Axboe0ce8b112011-01-27 22:25:29 +0100153 block += BLOCKS_PER_MAP;
Jens Axboe10ba5352006-10-20 11:39:27 +0200154 i++;
155 }
156
Jens Axboe2ba1c292008-02-01 13:16:38 +0100157 dprint(FD_IO, "failed finding a free block\n");
Jens Axboe10ba5352006-10-20 11:39:27 +0200158 return 1;
159}
160
Jens Axboeec4015d2007-03-23 08:04:27 +0100161static int get_next_rand_offset(struct thread_data *td, struct fio_file *f,
Jens Axboe4ba66132008-02-05 10:05:50 +0100162 enum fio_ddir ddir, unsigned long long *b)
Jens Axboeec4015d2007-03-23 08:04:27 +0100163{
Jens Axboe15b87722011-10-12 09:42:33 +0200164 unsigned long long rmax, r, lastb;
Jens Axboeec4015d2007-03-23 08:04:27 +0100165 int loops = 5;
166
Jens Axboe5e0baa72010-10-20 11:14:57 +0200167 lastb = last_block(td, f, ddir);
168 if (!lastb)
169 return 1;
170
Jens Axboe0ce8b112011-01-27 22:25:29 +0100171 if (f->failed_rands >= 200)
172 goto ffz;
173
Jens Axboe15b87722011-10-12 09:42:33 +0200174 rmax = td->o.use_os_rand ? OS_RAND_MAX : FRAND_MAX;
Jens Axboeec4015d2007-03-23 08:04:27 +0100175 do {
Jens Axboe15b87722011-10-12 09:42:33 +0200176 if (td->o.use_os_rand)
Jens Axboe2615cc42011-03-28 09:35:09 +0200177 r = os_random_long(&td->random_state);
Jens Axboe15b87722011-10-12 09:42:33 +0200178 else
Jens Axboe2615cc42011-03-28 09:35:09 +0200179 r = __rand(&td->__random_state);
Jens Axboe15b87722011-10-12 09:42:33 +0200180
181 *b = (lastb - 1) * (r / ((unsigned long long) rmax + 1.0));
Jens Axboe2615cc42011-03-28 09:35:09 +0200182
Jens Axboe84422ac2008-02-19 20:10:26 +0100183 dprint(FD_RANDOM, "off rand %llu\n", r);
Jens Axboe2615cc42011-03-28 09:35:09 +0200184
Jens Axboe2ba1c292008-02-01 13:16:38 +0100185
Jens Axboe43c63a72007-05-21 13:23:30 +0200186 /*
187 * if we are not maintaining a random map, we are done.
188 */
Jens Axboe303032a2008-03-26 10:11:10 +0100189 if (!file_randommap(td, f))
Jens Axboe0ce8b112011-01-27 22:25:29 +0100190 goto ret_good;
Jens Axboe43c63a72007-05-21 13:23:30 +0200191
192 /*
Jens Axboe84422ac2008-02-19 20:10:26 +0100193 * calculate map offset and check if it's free
Jens Axboe43c63a72007-05-21 13:23:30 +0200194 */
Jens Axboeaec2de22008-04-24 12:44:42 +0200195 if (random_map_free(f, *b))
Jens Axboe0ce8b112011-01-27 22:25:29 +0100196 goto ret_good;
Jens Axboe43c63a72007-05-21 13:23:30 +0200197
Jens Axboe84422ac2008-02-19 20:10:26 +0100198 dprint(FD_RANDOM, "get_next_rand_offset: offset %llu busy\n",
199 *b);
Jens Axboe43c63a72007-05-21 13:23:30 +0200200 } while (--loops);
Jens Axboeec4015d2007-03-23 08:04:27 +0100201
Jens Axboe0ce8b112011-01-27 22:25:29 +0100202 if (!f->failed_rands++)
203 f->last_free_lookup = 0;
204
Jens Axboeec4015d2007-03-23 08:04:27 +0100205 /*
Jens Axboe43c63a72007-05-21 13:23:30 +0200206 * we get here, if we didn't suceed in looking up a block. generate
207 * a random start offset into the filemap, and find the first free
208 * block from there.
Jens Axboeec4015d2007-03-23 08:04:27 +0100209 */
Jens Axboe43c63a72007-05-21 13:23:30 +0200210 loops = 10;
211 do {
Jens Axboedc873b62008-06-04 20:13:04 +0200212 f->last_free_lookup = (f->num_maps - 1) *
Jens Axboe15b87722011-10-12 09:42:33 +0200213 (r / ((unsigned long long) rmax + 1.0));
Jens Axboe4ba66132008-02-05 10:05:50 +0100214 if (!get_next_free_block(td, f, ddir, b))
Jens Axboe0ce8b112011-01-27 22:25:29 +0100215 goto ret;
Jens Axboeec4015d2007-03-23 08:04:27 +0100216
Jens Axboed1cea522011-03-28 09:37:41 +0200217 if (td->o.use_os_rand)
218 r = os_random_long(&td->random_state);
219 else
220 r = __rand(&td->__random_state);
Jens Axboe43c63a72007-05-21 13:23:30 +0200221 } while (--loops);
222
223 /*
224 * that didn't work either, try exhaustive search from the start
225 */
226 f->last_free_lookup = 0;
Jens Axboe0ce8b112011-01-27 22:25:29 +0100227ffz:
228 if (!get_next_free_block(td, f, ddir, b))
229 return 0;
230 f->last_free_lookup = 0;
Jens Axboe4ba66132008-02-05 10:05:50 +0100231 return get_next_free_block(td, f, ddir, b);
Jens Axboe0ce8b112011-01-27 22:25:29 +0100232ret_good:
233 f->failed_rands = 0;
234ret:
235 return 0;
Jens Axboeec4015d2007-03-23 08:04:27 +0100236}
237
Jens Axboe38dad622010-07-20 14:46:00 -0600238static int get_next_rand_block(struct thread_data *td, struct fio_file *f,
239 enum fio_ddir ddir, unsigned long long *b)
240{
241 if (get_next_rand_offset(td, f, ddir, b)) {
242 dprint(FD_IO, "%s: rand offset failed, last=%llu, size=%llu\n",
243 f->file_name, f->last_pos, f->real_file_size);
244 return 1;
245 }
246
247 return 0;
248}
249
250static int get_next_seq_block(struct thread_data *td, struct fio_file *f,
251 enum fio_ddir ddir, unsigned long long *b)
252{
Jens Axboeff58fce2010-08-25 12:02:08 +0200253 assert(ddir_rw(ddir));
254
Jens Axboe38dad622010-07-20 14:46:00 -0600255 if (f->last_pos < f->real_file_size) {
Jens Axboea66da7a2011-08-31 13:14:12 -0600256 unsigned long long pos;
Jens Axboe059b0802011-08-25 09:09:37 +0200257
Jens Axboea66da7a2011-08-31 13:14:12 -0600258 if (f->last_pos == f->file_offset && td->o.ddir_seq_add < 0)
259 f->last_pos = f->real_file_size;
260
261 pos = f->last_pos - f->file_offset;
Jens Axboe059b0802011-08-25 09:09:37 +0200262 if (pos)
263 pos += td->o.ddir_seq_add;
264
265 *b = pos / td->o.min_bs[ddir];
Jens Axboe38dad622010-07-20 14:46:00 -0600266 return 0;
267 }
268
269 return 1;
270}
271
272static int get_next_block(struct thread_data *td, struct io_u *io_u,
273 enum fio_ddir ddir, int rw_seq, unsigned long long *b)
274{
275 struct fio_file *f = io_u->file;
276 int ret;
277
Jens Axboeff58fce2010-08-25 12:02:08 +0200278 assert(ddir_rw(ddir));
279
Jens Axboe38dad622010-07-20 14:46:00 -0600280 if (rw_seq) {
281 if (td_random(td))
282 ret = get_next_rand_block(td, f, ddir, b);
283 else
284 ret = get_next_seq_block(td, f, ddir, b);
285 } else {
286 io_u->flags |= IO_U_F_BUSY_OK;
287
288 if (td->o.rw_seq == RW_SEQ_SEQ) {
289 ret = get_next_seq_block(td, f, ddir, b);
290 if (ret)
291 ret = get_next_rand_block(td, f, ddir, b);
292 } else if (td->o.rw_seq == RW_SEQ_IDENT) {
293 if (f->last_start != -1ULL)
David Nellans05083202010-09-23 08:48:15 +0200294 *b = (f->last_start - f->file_offset)
295 / td->o.min_bs[ddir];
Jens Axboe38dad622010-07-20 14:46:00 -0600296 else
297 *b = 0;
298 ret = 0;
299 } else {
300 log_err("fio: unknown rw_seq=%d\n", td->o.rw_seq);
301 ret = 1;
302 }
303 }
304
305 return ret;
306}
307
Jens Axboe10ba5352006-10-20 11:39:27 +0200308/*
309 * For random io, generate a random new block and see if it's used. Repeat
310 * until we find a free one. For sequential io, just return the end of
311 * the last io issued.
312 */
Jens Axboe15dc1932010-03-05 10:59:06 +0100313static int __get_next_offset(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200314{
Jens Axboe9bf20612007-03-01 09:33:57 +0100315 struct fio_file *f = io_u->file;
Jens Axboeec4015d2007-03-23 08:04:27 +0100316 unsigned long long b;
Jens Axboe4ba66132008-02-05 10:05:50 +0100317 enum fio_ddir ddir = io_u->ddir;
Jens Axboe38dad622010-07-20 14:46:00 -0600318 int rw_seq_hit = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200319
Jens Axboeff58fce2010-08-25 12:02:08 +0200320 assert(ddir_rw(ddir));
321
Jens Axboe38dad622010-07-20 14:46:00 -0600322 if (td->o.ddir_seq_nr && !--td->ddir_seq_nr) {
323 rw_seq_hit = 1;
Jens Axboe5736c102010-07-20 12:03:25 -0600324 td->ddir_seq_nr = td->o.ddir_seq_nr;
Jens Axboe38dad622010-07-20 14:46:00 -0600325 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200326
David Nellans05083202010-09-23 08:48:15 +0200327 if (get_next_block(td, io_u, ddir, rw_seq_hit, &b))
Jens Axboe38dad622010-07-20 14:46:00 -0600328 return 1;
Jens Axboe10ba5352006-10-20 11:39:27 +0200329
Jens Axboe2b7a01d2009-03-11 11:00:13 +0100330 io_u->offset = b * td->o.ba[ddir];
Jens Axboe009bd842008-05-15 10:19:46 +0200331 if (io_u->offset >= f->io_size) {
332 dprint(FD_IO, "get_next_offset: offset %llu >= io_size %llu\n",
333 io_u->offset, f->io_size);
334 return 1;
335 }
336
337 io_u->offset += f->file_offset;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100338 if (io_u->offset >= f->real_file_size) {
339 dprint(FD_IO, "get_next_offset: offset %llu >= size %llu\n",
340 io_u->offset, f->real_file_size);
Jens Axboe10ba5352006-10-20 11:39:27 +0200341 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100342 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200343
344 return 0;
345}
346
Jens Axboe15dc1932010-03-05 10:59:06 +0100347static int get_next_offset(struct thread_data *td, struct io_u *io_u)
348{
Jens Axboe7eb36572010-03-08 13:58:49 +0100349 struct prof_io_ops *ops = &td->prof_io_ops;
350
351 if (ops->fill_io_u_off)
352 return ops->fill_io_u_off(td, io_u);
Jens Axboe15dc1932010-03-05 10:59:06 +0100353
354 return __get_next_offset(td, io_u);
355}
356
Jens Axboe79944122011-05-24 11:26:16 +0200357static inline int io_u_fits(struct thread_data *td, struct io_u *io_u,
358 unsigned int buflen)
359{
360 struct fio_file *f = io_u->file;
361
362 return io_u->offset + buflen <= f->io_size + td->o.start_offset;
363}
364
Jens Axboe15dc1932010-03-05 10:59:06 +0100365static unsigned int __get_next_buflen(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200366{
Jens Axboebca4ed42007-02-12 05:13:23 +0100367 const int ddir = io_u->ddir;
Jens Axboef3f552b2008-06-13 10:27:05 +0200368 unsigned int uninitialized_var(buflen);
Jens Axboef3059de2008-06-11 15:37:32 +0200369 unsigned int minbs, maxbs;
Jens Axboe1294c3e2011-05-11 08:15:18 +0200370 unsigned long r, rand_max;
Jens Axboe10ba5352006-10-20 11:39:27 +0200371
Jens Axboeff58fce2010-08-25 12:02:08 +0200372 assert(ddir_rw(ddir));
373
Jens Axboef3059de2008-06-11 15:37:32 +0200374 minbs = td->o.min_bs[ddir];
375 maxbs = td->o.max_bs[ddir];
376
Jens Axboe79944122011-05-24 11:26:16 +0200377 if (minbs == maxbs)
378 return minbs;
379
Jens Axboe52c58022012-02-06 21:58:56 +0100380 /*
381 * If we can't satisfy the min block size from here, then fail
382 */
383 if (!io_u_fits(td, io_u, minbs))
384 return 0;
385
Jens Axboe4c07ad82011-03-28 09:51:09 +0200386 if (td->o.use_os_rand)
387 rand_max = OS_RAND_MAX;
388 else
389 rand_max = FRAND_MAX;
390
Jens Axboe79944122011-05-24 11:26:16 +0200391 do {
Jens Axboe4c07ad82011-03-28 09:51:09 +0200392 if (td->o.use_os_rand)
393 r = os_random_long(&td->bsrange_state);
394 else
395 r = __rand(&td->__bsrange_state);
396
Jens Axboe720e84a2009-04-21 08:29:55 +0200397 if (!td->o.bssplit_nr[ddir]) {
Jens Axboef3059de2008-06-11 15:37:32 +0200398 buflen = 1 + (unsigned int) ((double) maxbs *
Jens Axboe4c07ad82011-03-28 09:51:09 +0200399 (r / (rand_max + 1.0)));
Jens Axboef3059de2008-06-11 15:37:32 +0200400 if (buflen < minbs)
401 buflen = minbs;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100402 } else {
Jens Axboe564ca972007-12-14 12:21:19 +0100403 long perc = 0;
404 unsigned int i;
405
Jens Axboe720e84a2009-04-21 08:29:55 +0200406 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
407 struct bssplit *bsp = &td->o.bssplit[ddir][i];
Jens Axboe564ca972007-12-14 12:21:19 +0100408
409 buflen = bsp->bs;
410 perc += bsp->perc;
Jens Axboe79944122011-05-24 11:26:16 +0200411 if ((r <= ((rand_max / 100L) * perc)) &&
412 io_u_fits(td, io_u, buflen))
Jens Axboe564ca972007-12-14 12:21:19 +0100413 break;
414 }
415 }
Jens Axboe79944122011-05-24 11:26:16 +0200416
Jens Axboef3059de2008-06-11 15:37:32 +0200417 if (!td->o.bs_unaligned && is_power_of_2(minbs))
418 buflen = (buflen + minbs - 1) & ~(minbs - 1);
Jens Axboe10ba5352006-10-20 11:39:27 +0200419
Jens Axboe79944122011-05-24 11:26:16 +0200420 } while (!io_u_fits(td, io_u, buflen));
Jens Axboe6a5e6882007-07-26 10:47:51 +0200421
Jens Axboe10ba5352006-10-20 11:39:27 +0200422 return buflen;
423}
424
Jens Axboe15dc1932010-03-05 10:59:06 +0100425static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u)
426{
Jens Axboe7eb36572010-03-08 13:58:49 +0100427 struct prof_io_ops *ops = &td->prof_io_ops;
428
429 if (ops->fill_io_u_size)
430 return ops->fill_io_u_size(td, io_u);
Jens Axboe15dc1932010-03-05 10:59:06 +0100431
432 return __get_next_buflen(td, io_u);
433}
434
Jens Axboeafe24a52007-03-16 20:27:27 +0100435static void set_rwmix_bytes(struct thread_data *td)
436{
Jens Axboeafe24a52007-03-16 20:27:27 +0100437 unsigned int diff;
438
439 /*
440 * we do time or byte based switch. this is needed because
441 * buffered writes may issue a lot quicker than they complete,
442 * whereas reads do not.
443 */
Jens Axboee47f7992007-03-21 14:05:39 +0100444 diff = td->o.rwmix[td->rwmix_ddir ^ 1];
Jens Axboe04c540d2008-05-28 10:35:26 +0200445 td->rwmix_issues = (td->io_issues[td->rwmix_ddir] * diff) / 100;
Jens Axboee47f7992007-03-21 14:05:39 +0100446}
447
448static inline enum fio_ddir get_rand_ddir(struct thread_data *td)
449{
450 unsigned int v;
Jens Axboe1294c3e2011-05-11 08:15:18 +0200451 unsigned long r;
Jens Axboee47f7992007-03-21 14:05:39 +0100452
Jens Axboe4c07ad82011-03-28 09:51:09 +0200453 if (td->o.use_os_rand) {
454 r = os_random_long(&td->rwmix_state);
455 v = 1 + (int) (100.0 * (r / (OS_RAND_MAX + 1.0)));
456 } else {
457 r = __rand(&td->__rwmix_state);
458 v = 1 + (int) (100.0 * (r / (FRAND_MAX + 1.0)));
459 }
460
Jens Axboe04c540d2008-05-28 10:35:26 +0200461 if (v <= td->o.rwmix[DDIR_READ])
Jens Axboee47f7992007-03-21 14:05:39 +0100462 return DDIR_READ;
463
464 return DDIR_WRITE;
Jens Axboeafe24a52007-03-16 20:27:27 +0100465}
466
Jens Axboe581e7142009-06-09 12:47:16 +0200467static enum fio_ddir rate_ddir(struct thread_data *td, enum fio_ddir ddir)
468{
469 enum fio_ddir odir = ddir ^ 1;
470 struct timeval t;
471 long usec;
472
Jens Axboeff58fce2010-08-25 12:02:08 +0200473 assert(ddir_rw(ddir));
474
Jens Axboe581e7142009-06-09 12:47:16 +0200475 if (td->rate_pending_usleep[ddir] <= 0)
476 return ddir;
477
478 /*
479 * We have too much pending sleep in this direction. See if we
480 * should switch.
481 */
482 if (td_rw(td)) {
483 /*
484 * Other direction does not have too much pending, switch
485 */
486 if (td->rate_pending_usleep[odir] < 100000)
487 return odir;
488
489 /*
490 * Both directions have pending sleep. Sleep the minimum time
491 * and deduct from both.
492 */
493 if (td->rate_pending_usleep[ddir] <=
494 td->rate_pending_usleep[odir]) {
495 usec = td->rate_pending_usleep[ddir];
496 } else {
497 usec = td->rate_pending_usleep[odir];
498 ddir = odir;
499 }
500 } else
501 usec = td->rate_pending_usleep[ddir];
502
Jens Axboe78c1eda2011-08-30 15:34:14 -0600503 /*
504 * We are going to sleep, ensure that we flush anything pending as
Ryan Marchand422f9e42012-01-31 14:05:32 +0100505 * not to skew our latency numbers.
506 *
507 * Changed to only monitor 'in flight' requests here instead of the
508 * td->cur_depth, b/c td->cur_depth does not accurately represent
509 * io's that have been actually submitted to an async engine,
510 * and cur_depth is meaningless for sync engines.
Jens Axboe78c1eda2011-08-30 15:34:14 -0600511 */
Ryan Marchand422f9e42012-01-31 14:05:32 +0100512 if (td->io_u_in_flight) {
Jens Axboe78c1eda2011-08-30 15:34:14 -0600513 int fio_unused ret;
514
Ryan Marchand422f9e42012-01-31 14:05:32 +0100515 ret = io_u_queued_complete(td, td->io_u_in_flight, NULL);
Jens Axboe78c1eda2011-08-30 15:34:14 -0600516 }
517
Jens Axboe581e7142009-06-09 12:47:16 +0200518 fio_gettime(&t, NULL);
519 usec_sleep(td, usec);
520 usec = utime_since_now(&t);
521
522 td->rate_pending_usleep[ddir] -= usec;
523
524 odir = ddir ^ 1;
525 if (td_rw(td) && __should_check_rate(td, odir))
526 td->rate_pending_usleep[odir] -= usec;
Jens Axboe0b9d69e2009-09-11 22:29:54 +0200527
Jens Axboe581e7142009-06-09 12:47:16 +0200528 return ddir;
529}
530
Jens Axboe10ba5352006-10-20 11:39:27 +0200531/*
532 * Return the data direction for the next io_u. If the job is a
533 * mixed read/write workload, check the rwmix cycle and switch if
534 * necessary.
535 */
Jens Axboe1e97cce2006-12-05 11:44:16 +0100536static enum fio_ddir get_rw_ddir(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200537{
Jens Axboe581e7142009-06-09 12:47:16 +0200538 enum fio_ddir ddir;
539
Jens Axboe5f9099e2009-06-16 22:40:26 +0200540 /*
541 * see if it's time to fsync
542 */
543 if (td->o.fsync_blocks &&
544 !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) &&
545 td->io_issues[DDIR_WRITE] && should_fsync(td))
546 return DDIR_SYNC;
547
548 /*
549 * see if it's time to fdatasync
550 */
551 if (td->o.fdatasync_blocks &&
552 !(td->io_issues[DDIR_WRITE] % td->o.fdatasync_blocks) &&
553 td->io_issues[DDIR_WRITE] && should_fsync(td))
554 return DDIR_DATASYNC;
555
Jens Axboe44f29692010-03-09 20:09:44 +0100556 /*
557 * see if it's time to sync_file_range
558 */
559 if (td->sync_file_range_nr &&
560 !(td->io_issues[DDIR_WRITE] % td->sync_file_range_nr) &&
561 td->io_issues[DDIR_WRITE] && should_fsync(td))
562 return DDIR_SYNC_FILE_RANGE;
563
Jens Axboe10ba5352006-10-20 11:39:27 +0200564 if (td_rw(td)) {
Jens Axboe10ba5352006-10-20 11:39:27 +0200565 /*
566 * Check if it's time to seed a new data direction.
567 */
Jens Axboee4928662008-04-07 09:19:46 +0200568 if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) {
Jens Axboee47f7992007-03-21 14:05:39 +0100569 /*
570 * Put a top limit on how many bytes we do for
571 * one data direction, to avoid overflowing the
572 * ranges too much
573 */
574 ddir = get_rand_ddir(td);
Jens Axboee47f7992007-03-21 14:05:39 +0100575
576 if (ddir != td->rwmix_ddir)
577 set_rwmix_bytes(td);
578
579 td->rwmix_ddir = ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200580 }
Jens Axboe581e7142009-06-09 12:47:16 +0200581 ddir = td->rwmix_ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200582 } else if (td_read(td))
Jens Axboe581e7142009-06-09 12:47:16 +0200583 ddir = DDIR_READ;
Jens Axboe10ba5352006-10-20 11:39:27 +0200584 else
Jens Axboe581e7142009-06-09 12:47:16 +0200585 ddir = DDIR_WRITE;
586
587 td->rwmix_ddir = rate_ddir(td, ddir);
588 return td->rwmix_ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200589}
590
Jens Axboe1ef2b6b2010-10-08 15:07:01 +0200591static void set_rw_ddir(struct thread_data *td, struct io_u *io_u)
592{
593 io_u->ddir = get_rw_ddir(td);
594
595 if (io_u->ddir == DDIR_WRITE && (td->io_ops->flags & FIO_BARRIER) &&
596 td->o.barrier_blocks &&
597 !(td->io_issues[DDIR_WRITE] % td->o.barrier_blocks) &&
598 td->io_issues[DDIR_WRITE])
599 io_u->flags |= IO_U_F_BARRIER;
600}
601
Jens Axboee8462bd2009-07-06 12:59:04 +0200602void put_file_log(struct thread_data *td, struct fio_file *f)
Jens Axboe60f2c652008-05-16 12:31:36 +0200603{
604 int ret = put_file(td, f);
605
606 if (ret)
607 td_verror(td, ret, "file close");
608}
609
Jens Axboe10ba5352006-10-20 11:39:27 +0200610void put_io_u(struct thread_data *td, struct io_u *io_u)
611{
Jens Axboee8462bd2009-07-06 12:59:04 +0200612 td_io_u_lock(td);
613
Steven Langd7ee2a72011-10-26 09:46:50 +0200614 if (io_u->file && !(io_u->flags & IO_U_F_FREE_DEF))
Jens Axboe60f2c652008-05-16 12:31:36 +0200615 put_file_log(td, io_u->file);
Jens Axboe10ba5352006-10-20 11:39:27 +0200616 io_u->file = NULL;
Steven Langd7ee2a72011-10-26 09:46:50 +0200617 io_u->flags &= ~IO_U_F_FREE_DEF;
618 io_u->flags |= IO_U_F_FREE;
619
Radha Ramachandran0c412142009-11-03 21:45:31 +0100620 if (io_u->flags & IO_U_F_IN_CUR_DEPTH)
621 td->cur_depth--;
Jens Axboee8462bd2009-07-06 12:59:04 +0200622 flist_del_init(&io_u->list);
Jens Axboe01743ee2008-06-02 12:19:19 +0200623 flist_add(&io_u->list, &td->io_u_freelist);
Jens Axboee8462bd2009-07-06 12:59:04 +0200624 td_io_u_unlock(td);
625 td_io_u_free_notify(td);
Jens Axboe10ba5352006-10-20 11:39:27 +0200626}
627
Radha Ramachandranf2bba182009-06-15 08:40:16 +0200628void clear_io_u(struct thread_data *td, struct io_u *io_u)
629{
630 io_u->flags &= ~IO_U_F_FLIGHT;
631 put_io_u(td, io_u);
632}
633
Jens Axboe755200a2007-02-19 13:08:12 +0100634void requeue_io_u(struct thread_data *td, struct io_u **io_u)
635{
636 struct io_u *__io_u = *io_u;
637
Jens Axboe465221b2008-05-30 22:07:49 +0200638 dprint(FD_IO, "requeue %p\n", __io_u);
639
Jens Axboee8462bd2009-07-06 12:59:04 +0200640 td_io_u_lock(td);
641
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100642 __io_u->flags |= IO_U_F_FREE;
Jens Axboeff58fce2010-08-25 12:02:08 +0200643 if ((__io_u->flags & IO_U_F_FLIGHT) && ddir_rw(__io_u->ddir))
Jens Axboee4f54ad2008-02-04 10:56:07 +0100644 td->io_issues[__io_u->ddir]--;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100645
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100646 __io_u->flags &= ~IO_U_F_FLIGHT;
Radha Ramachandran0c412142009-11-03 21:45:31 +0100647 if (__io_u->flags & IO_U_F_IN_CUR_DEPTH)
648 td->cur_depth--;
Jens Axboe01743ee2008-06-02 12:19:19 +0200649 flist_del(&__io_u->list);
650 flist_add_tail(&__io_u->list, &td->io_u_requeues);
Jens Axboee8462bd2009-07-06 12:59:04 +0200651 td_io_u_unlock(td);
Jens Axboe755200a2007-02-19 13:08:12 +0100652 *io_u = NULL;
653}
654
Jens Axboe9bf20612007-03-01 09:33:57 +0100655static int fill_io_u(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200656{
Jens Axboeb4c5e1a2007-10-25 18:44:45 +0200657 if (td->io_ops->flags & FIO_NOIO)
658 goto out;
659
Jens Axboe1ef2b6b2010-10-08 15:07:01 +0200660 set_rw_ddir(td, io_u);
Jens Axboea00735e2006-11-03 08:58:08 +0100661
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200662 /*
Jens Axboeff58fce2010-08-25 12:02:08 +0200663 * fsync() or fdatasync() or trim etc, we are done
Jens Axboe5f9099e2009-06-16 22:40:26 +0200664 */
Jens Axboeff58fce2010-08-25 12:02:08 +0200665 if (!ddir_rw(io_u->ddir))
Jens Axboe5f9099e2009-06-16 22:40:26 +0200666 goto out;
667
668 /*
Jens Axboe48f5abd2007-07-20 13:25:04 +0200669 * See if it's time to switch to a new zone
670 */
671 if (td->zone_bytes >= td->o.zone_size) {
672 td->zone_bytes = 0;
Steven Noonaned335852012-01-31 13:58:00 +0100673 io_u->file->file_offset += td->o.zone_range + td->o.zone_skip;
674 io_u->file->last_pos = io_u->file->file_offset;
Jens Axboe48f5abd2007-07-20 13:25:04 +0200675 td->io_skip_bytes += td->o.zone_skip;
676 }
677
678 /*
Jens Axboec685b5b2007-02-10 20:02:28 +0100679 * No log, let the seq/rand engine retrieve the next buflen and
680 * position.
Jens Axboe10ba5352006-10-20 11:39:27 +0200681 */
Jens Axboe2ba1c292008-02-01 13:16:38 +0100682 if (get_next_offset(td, io_u)) {
683 dprint(FD_IO, "io_u %p, failed getting offset\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100684 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100685 }
Jens Axboec685b5b2007-02-10 20:02:28 +0100686
Jens Axboe9bf20612007-03-01 09:33:57 +0100687 io_u->buflen = get_next_buflen(td, io_u);
Jens Axboe2ba1c292008-02-01 13:16:38 +0100688 if (!io_u->buflen) {
689 dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100690 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100691 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200692
Jens Axboe2ba1c292008-02-01 13:16:38 +0100693 if (io_u->offset + io_u->buflen > io_u->file->real_file_size) {
694 dprint(FD_IO, "io_u %p, offset too large\n", io_u);
Jens Axboe4ba66132008-02-05 10:05:50 +0100695 dprint(FD_IO, " off=%llu/%lu > %llu\n", io_u->offset,
696 io_u->buflen, io_u->file->real_file_size);
Jens Axboe6a5e6882007-07-26 10:47:51 +0200697 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100698 }
Jens Axboe6a5e6882007-07-26 10:47:51 +0200699
Jens Axboebca4ed42007-02-12 05:13:23 +0100700 /*
701 * mark entry before potentially trimming io_u
702 */
Jens Axboe303032a2008-03-26 10:11:10 +0100703 if (td_random(td) && file_randommap(td, io_u->file))
Jens Axboe9bf20612007-03-01 09:33:57 +0100704 mark_random_map(td, io_u);
Jens Axboe10ba5352006-10-20 11:39:27 +0200705
Jens Axboebca4ed42007-02-12 05:13:23 +0100706 /*
707 * If using a write iolog, store this entry.
708 */
Jens Axboec38e9462007-03-27 08:48:48 +0200709out:
Jens Axboe2ba1c292008-02-01 13:16:38 +0100710 dprint_io_u(io_u, "fill_io_u");
Jens Axboed9d91e32008-01-31 13:25:42 +0100711 td->zone_bytes += io_u->buflen;
Jens Axboef29b25a2007-07-23 08:56:43 +0200712 log_io_u(td, io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100713 return 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200714}
715
Jens Axboe838bc702008-05-22 13:08:23 +0200716static void __io_u_mark_map(unsigned int *map, unsigned int nr)
717{
Jens Axboe2b13e712011-01-19 14:04:16 -0700718 int idx = 0;
Jens Axboe838bc702008-05-22 13:08:23 +0200719
720 switch (nr) {
721 default:
Jens Axboe2b13e712011-01-19 14:04:16 -0700722 idx = 6;
Jens Axboe838bc702008-05-22 13:08:23 +0200723 break;
724 case 33 ... 64:
Jens Axboe2b13e712011-01-19 14:04:16 -0700725 idx = 5;
Jens Axboe838bc702008-05-22 13:08:23 +0200726 break;
727 case 17 ... 32:
Jens Axboe2b13e712011-01-19 14:04:16 -0700728 idx = 4;
Jens Axboe838bc702008-05-22 13:08:23 +0200729 break;
730 case 9 ... 16:
Jens Axboe2b13e712011-01-19 14:04:16 -0700731 idx = 3;
Jens Axboe838bc702008-05-22 13:08:23 +0200732 break;
733 case 5 ... 8:
Jens Axboe2b13e712011-01-19 14:04:16 -0700734 idx = 2;
Jens Axboe838bc702008-05-22 13:08:23 +0200735 break;
736 case 1 ... 4:
Jens Axboe2b13e712011-01-19 14:04:16 -0700737 idx = 1;
Jens Axboe838bc702008-05-22 13:08:23 +0200738 case 0:
739 break;
740 }
741
Jens Axboe2b13e712011-01-19 14:04:16 -0700742 map[idx]++;
Jens Axboe838bc702008-05-22 13:08:23 +0200743}
744
745void io_u_mark_submit(struct thread_data *td, unsigned int nr)
746{
747 __io_u_mark_map(td->ts.io_u_submit, nr);
748 td->ts.total_submit++;
749}
750
751void io_u_mark_complete(struct thread_data *td, unsigned int nr)
752{
753 __io_u_mark_map(td->ts.io_u_complete, nr);
754 td->ts.total_complete++;
755}
756
Jens Axboed8005752008-05-15 09:49:09 +0200757void io_u_mark_depth(struct thread_data *td, unsigned int nr)
Jens Axboe71619dc2007-01-13 23:56:33 +0100758{
Jens Axboe2b13e712011-01-19 14:04:16 -0700759 int idx = 0;
Jens Axboe71619dc2007-01-13 23:56:33 +0100760
761 switch (td->cur_depth) {
762 default:
Jens Axboe2b13e712011-01-19 14:04:16 -0700763 idx = 6;
Jens Axboea783e612007-06-19 09:50:28 +0200764 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100765 case 32 ... 63:
Jens Axboe2b13e712011-01-19 14:04:16 -0700766 idx = 5;
Jens Axboea783e612007-06-19 09:50:28 +0200767 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100768 case 16 ... 31:
Jens Axboe2b13e712011-01-19 14:04:16 -0700769 idx = 4;
Jens Axboea783e612007-06-19 09:50:28 +0200770 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100771 case 8 ... 15:
Jens Axboe2b13e712011-01-19 14:04:16 -0700772 idx = 3;
Jens Axboea783e612007-06-19 09:50:28 +0200773 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100774 case 4 ... 7:
Jens Axboe2b13e712011-01-19 14:04:16 -0700775 idx = 2;
Jens Axboea783e612007-06-19 09:50:28 +0200776 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100777 case 2 ... 3:
Jens Axboe2b13e712011-01-19 14:04:16 -0700778 idx = 1;
Jens Axboe71619dc2007-01-13 23:56:33 +0100779 case 1:
780 break;
781 }
782
Jens Axboe2b13e712011-01-19 14:04:16 -0700783 td->ts.io_u_map[idx] += nr;
Jens Axboe71619dc2007-01-13 23:56:33 +0100784}
785
Jens Axboe04a0fea2007-06-19 12:48:41 +0200786static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec)
787{
Jens Axboe2b13e712011-01-19 14:04:16 -0700788 int idx = 0;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200789
790 assert(usec < 1000);
791
792 switch (usec) {
793 case 750 ... 999:
Jens Axboe2b13e712011-01-19 14:04:16 -0700794 idx = 9;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200795 break;
796 case 500 ... 749:
Jens Axboe2b13e712011-01-19 14:04:16 -0700797 idx = 8;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200798 break;
799 case 250 ... 499:
Jens Axboe2b13e712011-01-19 14:04:16 -0700800 idx = 7;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200801 break;
802 case 100 ... 249:
Jens Axboe2b13e712011-01-19 14:04:16 -0700803 idx = 6;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200804 break;
805 case 50 ... 99:
Jens Axboe2b13e712011-01-19 14:04:16 -0700806 idx = 5;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200807 break;
808 case 20 ... 49:
Jens Axboe2b13e712011-01-19 14:04:16 -0700809 idx = 4;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200810 break;
811 case 10 ... 19:
Jens Axboe2b13e712011-01-19 14:04:16 -0700812 idx = 3;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200813 break;
814 case 4 ... 9:
Jens Axboe2b13e712011-01-19 14:04:16 -0700815 idx = 2;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200816 break;
817 case 2 ... 3:
Jens Axboe2b13e712011-01-19 14:04:16 -0700818 idx = 1;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200819 case 0 ... 1:
820 break;
821 }
822
Jens Axboe2b13e712011-01-19 14:04:16 -0700823 assert(idx < FIO_IO_U_LAT_U_NR);
824 td->ts.io_u_lat_u[idx]++;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200825}
826
827static void io_u_mark_lat_msec(struct thread_data *td, unsigned long msec)
Jens Axboeec118302007-02-17 04:38:20 +0100828{
Jens Axboe2b13e712011-01-19 14:04:16 -0700829 int idx = 0;
Jens Axboeec118302007-02-17 04:38:20 +0100830
831 switch (msec) {
832 default:
Jens Axboe2b13e712011-01-19 14:04:16 -0700833 idx = 11;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200834 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100835 case 1000 ... 1999:
Jens Axboe2b13e712011-01-19 14:04:16 -0700836 idx = 10;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200837 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100838 case 750 ... 999:
Jens Axboe2b13e712011-01-19 14:04:16 -0700839 idx = 9;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200840 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100841 case 500 ... 749:
Jens Axboe2b13e712011-01-19 14:04:16 -0700842 idx = 8;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200843 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100844 case 250 ... 499:
Jens Axboe2b13e712011-01-19 14:04:16 -0700845 idx = 7;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200846 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100847 case 100 ... 249:
Jens Axboe2b13e712011-01-19 14:04:16 -0700848 idx = 6;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200849 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100850 case 50 ... 99:
Jens Axboe2b13e712011-01-19 14:04:16 -0700851 idx = 5;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200852 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100853 case 20 ... 49:
Jens Axboe2b13e712011-01-19 14:04:16 -0700854 idx = 4;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200855 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100856 case 10 ... 19:
Jens Axboe2b13e712011-01-19 14:04:16 -0700857 idx = 3;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200858 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100859 case 4 ... 9:
Jens Axboe2b13e712011-01-19 14:04:16 -0700860 idx = 2;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200861 break;
Jens Axboeec118302007-02-17 04:38:20 +0100862 case 2 ... 3:
Jens Axboe2b13e712011-01-19 14:04:16 -0700863 idx = 1;
Jens Axboeec118302007-02-17 04:38:20 +0100864 case 0 ... 1:
865 break;
866 }
867
Jens Axboe2b13e712011-01-19 14:04:16 -0700868 assert(idx < FIO_IO_U_LAT_M_NR);
869 td->ts.io_u_lat_m[idx]++;
Jens Axboe04a0fea2007-06-19 12:48:41 +0200870}
871
872static void io_u_mark_latency(struct thread_data *td, unsigned long usec)
873{
874 if (usec < 1000)
875 io_u_mark_lat_usec(td, usec);
876 else
877 io_u_mark_lat_msec(td, usec / 1000);
Jens Axboeec118302007-02-17 04:38:20 +0100878}
879
Jens Axboe0aabe162007-02-23 08:45:55 +0100880/*
881 * Get next file to service by choosing one at random
882 */
Jens Axboe2cc52932009-06-09 14:14:20 +0200883static struct fio_file *get_next_file_rand(struct thread_data *td,
884 enum fio_file_flags goodf,
Jens Axboed6aed792009-06-03 08:41:15 +0200885 enum fio_file_flags badf)
Jens Axboe0aabe162007-02-23 08:45:55 +0100886{
Jens Axboe0aabe162007-02-23 08:45:55 +0100887 struct fio_file *f;
Jens Axboe1c178182007-03-13 13:25:18 +0100888 int fno;
Jens Axboe0aabe162007-02-23 08:45:55 +0100889
890 do {
Jens Axboe87b10672009-03-04 09:39:47 +0100891 int opened = 0;
Jens Axboe1294c3e2011-05-11 08:15:18 +0200892 unsigned long r;
Jens Axboe7c83c082007-03-01 10:04:15 +0100893
Jens Axboe4c07ad82011-03-28 09:51:09 +0200894 if (td->o.use_os_rand) {
895 r = os_random_long(&td->next_file_state);
896 fno = (unsigned int) ((double) td->o.nr_files
897 * (r / (OS_RAND_MAX + 1.0)));
898 } else {
899 r = __rand(&td->__next_file_state);
900 fno = (unsigned int) ((double) td->o.nr_files
901 * (r / (FRAND_MAX + 1.0)));
902 }
903
Jens Axboe126d65c2008-03-01 18:04:31 +0100904 f = td->files[fno];
Jens Axboed6aed792009-06-03 08:41:15 +0200905 if (fio_file_done(f))
Jens Axboe059e63c2007-03-27 20:34:47 +0200906 continue;
Jens Axboe1c178182007-03-13 13:25:18 +0100907
Jens Axboed6aed792009-06-03 08:41:15 +0200908 if (!fio_file_open(f)) {
Jens Axboe87b10672009-03-04 09:39:47 +0100909 int err;
910
911 err = td_io_open_file(td, f);
912 if (err)
913 continue;
914 opened = 1;
915 }
916
Jens Axboe2ba1c292008-02-01 13:16:38 +0100917 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) {
918 dprint(FD_FILE, "get_next_file_rand: %p\n", f);
Jens Axboe0aabe162007-02-23 08:45:55 +0100919 return f;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100920 }
Jens Axboe87b10672009-03-04 09:39:47 +0100921 if (opened)
922 td_io_close_file(td, f);
Jens Axboe0aabe162007-02-23 08:45:55 +0100923 } while (1);
924}
925
926/*
927 * Get next file to service by doing round robin between all available ones
928 */
Jens Axboe1c178182007-03-13 13:25:18 +0100929static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf,
930 int badf)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100931{
932 unsigned int old_next_file = td->next_file;
933 struct fio_file *f;
934
935 do {
Jens Axboe87b10672009-03-04 09:39:47 +0100936 int opened = 0;
937
Jens Axboe126d65c2008-03-01 18:04:31 +0100938 f = td->files[td->next_file];
Jens Axboe3d7c3912007-02-19 13:16:12 +0100939
940 td->next_file++;
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100941 if (td->next_file >= td->o.nr_files)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100942 td->next_file = 0;
943
Jens Axboe87b10672009-03-04 09:39:47 +0100944 dprint(FD_FILE, "trying file %s %x\n", f->file_name, f->flags);
Jens Axboed6aed792009-06-03 08:41:15 +0200945 if (fio_file_done(f)) {
Jens Axboed5ed68e2007-03-28 09:33:43 +0200946 f = NULL;
Jens Axboe059e63c2007-03-27 20:34:47 +0200947 continue;
Jens Axboed5ed68e2007-03-28 09:33:43 +0200948 }
Jens Axboe059e63c2007-03-27 20:34:47 +0200949
Jens Axboed6aed792009-06-03 08:41:15 +0200950 if (!fio_file_open(f)) {
Jens Axboe87b10672009-03-04 09:39:47 +0100951 int err;
952
953 err = td_io_open_file(td, f);
Jens Axboeb5696bf2009-03-04 16:03:49 +0100954 if (err) {
955 dprint(FD_FILE, "error %d on open of %s\n",
956 err, f->file_name);
Jens Axboe87c27b42009-05-20 10:45:12 +0200957 f = NULL;
Jens Axboe87b10672009-03-04 09:39:47 +0100958 continue;
Jens Axboeb5696bf2009-03-04 16:03:49 +0100959 }
Jens Axboe87b10672009-03-04 09:39:47 +0100960 opened = 1;
961 }
962
Jens Axboe0b9d69e2009-09-11 22:29:54 +0200963 dprint(FD_FILE, "goodf=%x, badf=%x, ff=%x\n", goodf, badf,
964 f->flags);
Jens Axboe1c178182007-03-13 13:25:18 +0100965 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
Jens Axboe3d7c3912007-02-19 13:16:12 +0100966 break;
967
Jens Axboe87b10672009-03-04 09:39:47 +0100968 if (opened)
969 td_io_close_file(td, f);
970
Jens Axboe3d7c3912007-02-19 13:16:12 +0100971 f = NULL;
972 } while (td->next_file != old_next_file);
973
Jens Axboe2ba1c292008-02-01 13:16:38 +0100974 dprint(FD_FILE, "get_next_file_rr: %p\n", f);
Jens Axboe3d7c3912007-02-19 13:16:12 +0100975 return f;
976}
977
Jens Axboe7eb36572010-03-08 13:58:49 +0100978static struct fio_file *__get_next_file(struct thread_data *td)
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100979{
Jens Axboe1907dbc2007-03-12 11:44:28 +0100980 struct fio_file *f;
981
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100982 assert(td->o.nr_files <= td->files_index);
Jens Axboe1c178182007-03-13 13:25:18 +0100983
Jens Axboeb5696bf2009-03-04 16:03:49 +0100984 if (td->nr_done_files >= td->o.nr_files) {
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100985 dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d,"
986 " nr_files=%d\n", td->nr_open_files,
987 td->nr_done_files,
988 td->o.nr_files);
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100989 return NULL;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100990 }
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100991
Jens Axboe1907dbc2007-03-12 11:44:28 +0100992 f = td->file_service_file;
Jens Axboed6aed792009-06-03 08:41:15 +0200993 if (f && fio_file_open(f) && !fio_file_closing(f)) {
Jens Axboea086c252009-03-04 08:27:37 +0100994 if (td->o.file_service_type == FIO_FSERVICE_SEQ)
995 goto out;
996 if (td->file_service_left--)
997 goto out;
998 }
Jens Axboe1907dbc2007-03-12 11:44:28 +0100999
Jens Axboea086c252009-03-04 08:27:37 +01001000 if (td->o.file_service_type == FIO_FSERVICE_RR ||
1001 td->o.file_service_type == FIO_FSERVICE_SEQ)
Jens Axboed6aed792009-06-03 08:41:15 +02001002 f = get_next_file_rr(td, FIO_FILE_open, FIO_FILE_closing);
Jens Axboebdb4e2e2007-03-01 09:54:57 +01001003 else
Jens Axboed6aed792009-06-03 08:41:15 +02001004 f = get_next_file_rand(td, FIO_FILE_open, FIO_FILE_closing);
Jens Axboe1907dbc2007-03-12 11:44:28 +01001005
1006 td->file_service_file = f;
1007 td->file_service_left = td->file_service_nr - 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001008out:
Jens Axboe683023e2009-03-04 08:41:31 +01001009 dprint(FD_FILE, "get_next_file: %p [%s]\n", f, f->file_name);
Jens Axboe1907dbc2007-03-12 11:44:28 +01001010 return f;
Jens Axboebdb4e2e2007-03-01 09:54:57 +01001011}
1012
Jens Axboe7eb36572010-03-08 13:58:49 +01001013static struct fio_file *get_next_file(struct thread_data *td)
1014{
1015 struct prof_io_ops *ops = &td->prof_io_ops;
1016
1017 if (ops->get_next_file)
1018 return ops->get_next_file(td);
1019
1020 return __get_next_file(td);
1021}
1022
Jens Axboe429f6672007-07-23 10:38:43 +02001023static int set_io_u_file(struct thread_data *td, struct io_u *io_u)
1024{
1025 struct fio_file *f;
1026
1027 do {
1028 f = get_next_file(td);
1029 if (!f)
1030 return 1;
1031
Jens Axboe429f6672007-07-23 10:38:43 +02001032 io_u->file = f;
1033 get_file(f);
1034
1035 if (!fill_io_u(td, io_u))
1036 break;
1037
Jens Axboeb5696bf2009-03-04 16:03:49 +01001038 put_file_log(td, f);
Jens Axboe429f6672007-07-23 10:38:43 +02001039 td_io_close_file(td, f);
Jens Axboeb5696bf2009-03-04 16:03:49 +01001040 io_u->file = NULL;
Jens Axboed6aed792009-06-03 08:41:15 +02001041 fio_file_set_done(f);
Jens Axboe429f6672007-07-23 10:38:43 +02001042 td->nr_done_files++;
Jens Axboe0b9d69e2009-09-11 22:29:54 +02001043 dprint(FD_FILE, "%s: is done (%d of %d)\n", f->file_name,
1044 td->nr_done_files, td->o.nr_files);
Jens Axboe429f6672007-07-23 10:38:43 +02001045 } while (1);
1046
1047 return 0;
1048}
1049
1050
Jens Axboe10ba5352006-10-20 11:39:27 +02001051struct io_u *__get_io_u(struct thread_data *td)
1052{
1053 struct io_u *io_u = NULL;
1054
Jens Axboee8462bd2009-07-06 12:59:04 +02001055 td_io_u_lock(td);
1056
1057again:
Jens Axboe01743ee2008-06-02 12:19:19 +02001058 if (!flist_empty(&td->io_u_requeues))
1059 io_u = flist_entry(td->io_u_requeues.next, struct io_u, list);
Jens Axboe755200a2007-02-19 13:08:12 +01001060 else if (!queue_full(td)) {
Jens Axboe01743ee2008-06-02 12:19:19 +02001061 io_u = flist_entry(td->io_u_freelist.next, struct io_u, list);
Jens Axboe10ba5352006-10-20 11:39:27 +02001062
Jens Axboe6040dab2006-10-24 19:38:15 +02001063 io_u->buflen = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +02001064 io_u->resid = 0;
Jens Axboe755200a2007-02-19 13:08:12 +01001065 io_u->file = NULL;
Jens Axboed7762cf2007-02-23 12:34:57 +01001066 io_u->end_io = NULL;
Jens Axboe755200a2007-02-19 13:08:12 +01001067 }
1068
1069 if (io_u) {
Jens Axboe0c6e7512007-02-22 11:19:39 +01001070 assert(io_u->flags & IO_U_F_FREE);
Jens Axboe2ecc1b52009-11-04 20:58:09 +01001071 io_u->flags &= ~(IO_U_F_FREE | IO_U_F_FREE_DEF);
Jens Axboe1ef2b6b2010-10-08 15:07:01 +02001072 io_u->flags &= ~(IO_U_F_TRIMMED | IO_U_F_BARRIER);
Jens Axboe0c6e7512007-02-22 11:19:39 +01001073
Jens Axboe755200a2007-02-19 13:08:12 +01001074 io_u->error = 0;
Jens Axboe01743ee2008-06-02 12:19:19 +02001075 flist_del(&io_u->list);
1076 flist_add(&io_u->list, &td->io_u_busylist);
Jens Axboe10ba5352006-10-20 11:39:27 +02001077 td->cur_depth++;
Radha Ramachandran0c412142009-11-03 21:45:31 +01001078 io_u->flags |= IO_U_F_IN_CUR_DEPTH;
Jens Axboe1dec3e02010-03-19 10:33:39 +01001079 } else if (td->o.verify_async) {
1080 /*
1081 * We ran out, wait for async verify threads to finish and
1082 * return one
1083 */
1084 pthread_cond_wait(&td->free_cond, &td->io_u_lock);
1085 goto again;
Jens Axboe10ba5352006-10-20 11:39:27 +02001086 }
1087
Jens Axboee8462bd2009-07-06 12:59:04 +02001088 td_io_u_unlock(td);
Jens Axboe10ba5352006-10-20 11:39:27 +02001089 return io_u;
1090}
1091
Jens Axboe0d29de82010-09-01 13:54:15 +02001092static int check_get_trim(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +02001093{
Jens Axboe0d29de82010-09-01 13:54:15 +02001094 if (td->o.trim_backlog && td->trim_entries) {
1095 int get_trim = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +02001096
Jens Axboe0d29de82010-09-01 13:54:15 +02001097 if (td->trim_batch) {
1098 td->trim_batch--;
1099 get_trim = 1;
1100 } else if (!(td->io_hist_len % td->o.trim_backlog) &&
1101 td->last_ddir != DDIR_READ) {
1102 td->trim_batch = td->o.trim_batch;
1103 if (!td->trim_batch)
1104 td->trim_batch = td->o.trim_backlog;
1105 get_trim = 1;
1106 }
1107
1108 if (get_trim && !get_next_trim(td, io_u))
1109 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001110 }
Jens Axboe10ba5352006-10-20 11:39:27 +02001111
Jens Axboe0d29de82010-09-01 13:54:15 +02001112 return 0;
1113}
1114
1115static int check_get_verify(struct thread_data *td, struct io_u *io_u)
1116{
Jens Axboe9e144182010-06-15 14:25:36 +02001117 if (td->o.verify_backlog && td->io_hist_len) {
1118 int get_verify = 0;
1119
1120 if (td->verify_batch) {
1121 td->verify_batch--;
1122 get_verify = 1;
1123 } else if (!(td->io_hist_len % td->o.verify_backlog) &&
1124 td->last_ddir != DDIR_READ) {
1125 td->verify_batch = td->o.verify_batch;
Jens Axboef8a75c92010-06-15 14:27:28 +02001126 if (!td->verify_batch)
1127 td->verify_batch = td->o.verify_backlog;
Jens Axboe9e144182010-06-15 14:25:36 +02001128 get_verify = 1;
1129 }
1130
1131 if (get_verify && !get_next_verify(td, io_u))
Jens Axboe0d29de82010-09-01 13:54:15 +02001132 return 1;
Jens Axboe9e144182010-06-15 14:25:36 +02001133 }
1134
Jens Axboe0d29de82010-09-01 13:54:15 +02001135 return 0;
1136}
1137
1138/*
Jens Axboede789762011-09-16 22:11:23 +02001139 * Fill offset and start time into the buffer content, to prevent too
Jens Axboe23f394d2011-09-16 22:45:27 +02001140 * easy compressible data for simple de-dupe attempts. Do this for every
1141 * 512b block in the range, since that should be the smallest block size
1142 * we can expect from a device.
Jens Axboede789762011-09-16 22:11:23 +02001143 */
1144static void small_content_scramble(struct io_u *io_u)
1145{
Jens Axboe23f394d2011-09-16 22:45:27 +02001146 unsigned int i, nr_blocks = io_u->buflen / 512;
Jens Axboefad82f72011-09-19 11:33:30 +02001147 unsigned long long boffset;
Jens Axboe23f394d2011-09-16 22:45:27 +02001148 unsigned int offset;
1149 void *p, *end;
Jens Axboede789762011-09-16 22:11:23 +02001150
Jens Axboe23f394d2011-09-16 22:45:27 +02001151 if (!nr_blocks)
1152 return;
1153
1154 p = io_u->xfer_buf;
Jens Axboefba76ee2011-09-27 14:27:48 -06001155 boffset = io_u->offset;
Jens Axboe81f03662012-02-02 09:20:09 +01001156 io_u->buf_filled_len = 0;
Jens Axboefad82f72011-09-19 11:33:30 +02001157
Jens Axboe23f394d2011-09-16 22:45:27 +02001158 for (i = 0; i < nr_blocks; i++) {
1159 /*
1160 * Fill the byte offset into a "random" start offset of
1161 * the buffer, given by the product of the usec time
1162 * and the actual offset.
1163 */
Jens Axboefad82f72011-09-19 11:33:30 +02001164 offset = (io_u->start_time.tv_usec ^ boffset) & 511;
Jens Axboefba76ee2011-09-27 14:27:48 -06001165 offset &= ~(sizeof(unsigned long long) - 1);
Jens Axboe23f394d2011-09-16 22:45:27 +02001166 if (offset >= 512 - sizeof(unsigned long long))
1167 offset -= sizeof(unsigned long long);
Jens Axboefba76ee2011-09-27 14:27:48 -06001168 memcpy(p + offset, &boffset, sizeof(boffset));
Jens Axboe23f394d2011-09-16 22:45:27 +02001169
1170 end = p + 512 - sizeof(io_u->start_time);
1171 memcpy(end, &io_u->start_time, sizeof(io_u->start_time));
1172 p += 512;
Jens Axboefad82f72011-09-19 11:33:30 +02001173 boffset += 512;
Jens Axboe23f394d2011-09-16 22:45:27 +02001174 }
Jens Axboede789762011-09-16 22:11:23 +02001175}
1176
1177/*
Jens Axboe0d29de82010-09-01 13:54:15 +02001178 * Return an io_u to be processed. Gets a buflen and offset, sets direction,
1179 * etc. The returned io_u is fully ready to be prepped and submitted.
1180 */
1181struct io_u *get_io_u(struct thread_data *td)
1182{
1183 struct fio_file *f;
1184 struct io_u *io_u;
Jens Axboede789762011-09-16 22:11:23 +02001185 int do_scramble = 0;
Jens Axboe0d29de82010-09-01 13:54:15 +02001186
1187 io_u = __get_io_u(td);
1188 if (!io_u) {
1189 dprint(FD_IO, "__get_io_u failed\n");
1190 return NULL;
1191 }
1192
1193 if (check_get_verify(td, io_u))
1194 goto out;
1195 if (check_get_trim(td, io_u))
1196 goto out;
1197
Jens Axboe755200a2007-02-19 13:08:12 +01001198 /*
1199 * from a requeue, io_u already setup
1200 */
1201 if (io_u->file)
Jens Axboe77f392b2007-02-19 20:13:09 +01001202 goto out;
Jens Axboe755200a2007-02-19 13:08:12 +01001203
Jens Axboe429f6672007-07-23 10:38:43 +02001204 /*
1205 * If using an iolog, grab next piece if any available.
1206 */
1207 if (td->o.read_iolog_file) {
1208 if (read_iolog_get(td, io_u))
1209 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001210 } else if (set_io_u_file(td, io_u)) {
1211 dprint(FD_IO, "io_u %p, setting file failed\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +02001212 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001213 }
Jens Axboe5ec10ea2008-03-06 15:42:00 +01001214
Jens Axboe429f6672007-07-23 10:38:43 +02001215 f = io_u->file;
Jens Axboed6aed792009-06-03 08:41:15 +02001216 assert(fio_file_open(f));
Jens Axboe97af62c2007-05-22 11:12:13 +02001217
Jens Axboeff58fce2010-08-25 12:02:08 +02001218 if (ddir_rw(io_u->ddir)) {
Jens Axboed0656a92008-02-01 18:33:23 +01001219 if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) {
Jens Axboe2ba1c292008-02-01 13:16:38 +01001220 dprint(FD_IO, "get_io_u: zero buflen on %p\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +02001221 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +01001222 }
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001223
Jens Axboe38dad622010-07-20 14:46:00 -06001224 f->last_start = io_u->offset;
Jens Axboe36167d82007-02-18 05:41:31 +01001225 f->last_pos = io_u->offset + io_u->buflen;
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001226
Jens Axboefd684182011-09-19 09:24:44 +02001227 if (io_u->ddir == DDIR_WRITE) {
1228 if (td->o.verify != VERIFY_NONE)
1229 populate_verify_io_u(td, io_u);
1230 else if (td->o.refill_buffers)
1231 io_u_fill_buffer(td, io_u, io_u->xfer_buflen);
1232 else if (td->o.scramble_buffers)
1233 do_scramble = 1;
1234 } else if (io_u->ddir == DDIR_READ) {
Radha Ramachandrancbe8d752010-07-14 08:36:07 +02001235 /*
1236 * Reset the buf_filled parameters so next time if the
1237 * buffer is used for writes it is refilled.
1238 */
Radha Ramachandrancbe8d752010-07-14 08:36:07 +02001239 io_u->buf_filled_len = 0;
1240 }
Jens Axboe10ba5352006-10-20 11:39:27 +02001241 }
1242
Jens Axboe165faf12007-02-07 11:30:37 +01001243 /*
1244 * Set io data pointers.
1245 */
Jens Axboecec6b552007-02-06 20:15:38 +01001246 io_u->xfer_buf = io_u->buf;
1247 io_u->xfer_buflen = io_u->buflen;
Jens Axboe5973caf2008-05-21 19:52:35 +02001248
Jens Axboe6ac7a332008-03-01 15:22:32 +01001249out:
Jens Axboe0d29de82010-09-01 13:54:15 +02001250 assert(io_u->file);
Jens Axboe429f6672007-07-23 10:38:43 +02001251 if (!td_io_prep(td, io_u)) {
Jens Axboe993bf482008-11-14 13:04:53 +01001252 if (!td->o.disable_slat)
1253 fio_gettime(&io_u->start_time, NULL);
Jens Axboede789762011-09-16 22:11:23 +02001254 if (do_scramble)
1255 small_content_scramble(io_u);
Jens Axboe429f6672007-07-23 10:38:43 +02001256 return io_u;
Jens Axboe36167d82007-02-18 05:41:31 +01001257 }
Jens Axboe429f6672007-07-23 10:38:43 +02001258err_put:
Jens Axboe2ba1c292008-02-01 13:16:38 +01001259 dprint(FD_IO, "get_io_u failed\n");
Jens Axboe429f6672007-07-23 10:38:43 +02001260 put_io_u(td, io_u);
1261 return NULL;
Jens Axboe10ba5352006-10-20 11:39:27 +02001262}
1263
Jens Axboe54517922007-03-05 10:06:06 +01001264void io_u_log_error(struct thread_data *td, struct io_u *io_u)
1265{
Jens Axboe825f8182010-08-25 10:47:18 +02001266 const char *msg[] = { "read", "write", "sync", "datasync",
1267 "sync_file_range", "wait", "trim" };
1268
1269
Jens Axboe54517922007-03-05 10:06:06 +01001270
1271 log_err("fio: io_u error");
1272
1273 if (io_u->file)
1274 log_err(" on file %s", io_u->file->file_name);
1275
1276 log_err(": %s\n", strerror(io_u->error));
1277
Jens Axboe5ec10ea2008-03-06 15:42:00 +01001278 log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir],
1279 io_u->offset, io_u->xfer_buflen);
Jens Axboe54517922007-03-05 10:06:06 +01001280
1281 if (!td->error)
1282 td_verror(td, io_u->error, "io_u error");
1283}
1284
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001285static void account_io_completion(struct thread_data *td, struct io_u *io_u,
1286 struct io_completion_data *icd,
1287 const enum fio_ddir idx, unsigned int bytes)
1288{
1289 unsigned long uninitialized_var(lusec);
1290
1291 if (!icd->account)
1292 return;
1293
1294 if (!td->o.disable_clat || !td->o.disable_bw)
1295 lusec = utime_since(&io_u->issue_time, &icd->time);
1296
1297 if (!td->o.disable_lat) {
1298 unsigned long tusec;
1299
1300 tusec = utime_since(&io_u->start_time, &icd->time);
1301 add_lat_sample(td, idx, tusec, bytes);
1302 }
1303
1304 if (!td->o.disable_clat) {
1305 add_clat_sample(td, idx, lusec, bytes);
1306 io_u_mark_latency(td, lusec);
1307 }
1308
1309 if (!td->o.disable_bw)
1310 add_bw_sample(td, idx, bytes, &icd->time);
1311
1312 add_iops_sample(td, idx, &icd->time);
1313}
1314
Steven Lang1b8dbf22011-11-09 13:48:01 +01001315static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir)
1316{
1317 unsigned long long secs, remainder, bps, bytes;
1318 bytes = td->this_io_bytes[ddir];
1319 bps = td->rate_bps[ddir];
1320 secs = bytes / bps;
1321 remainder = bytes % bps;
1322 return remainder * 1000000 / bps + secs * 1000000;
1323}
1324
Jens Axboe97601022007-02-18 12:47:29 +01001325static void io_completed(struct thread_data *td, struct io_u *io_u,
1326 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +02001327{
Jens Axboedbad30b2008-12-05 13:17:16 +01001328 /*
1329 * Older gcc's are too dumb to realize that usec is always used
1330 * initialized, silence that warning.
1331 */
1332 unsigned long uninitialized_var(usec);
Jens Axboe44f29692010-03-09 20:09:44 +01001333 struct fio_file *f;
Jens Axboe10ba5352006-10-20 11:39:27 +02001334
Jens Axboe2ba1c292008-02-01 13:16:38 +01001335 dprint_io_u(io_u, "io complete");
1336
Jens Axboe2ecc1b52009-11-04 20:58:09 +01001337 td_io_u_lock(td);
Jens Axboe0c6e7512007-02-22 11:19:39 +01001338 assert(io_u->flags & IO_U_F_FLIGHT);
Jens Axboe38dad622010-07-20 14:46:00 -06001339 io_u->flags &= ~(IO_U_F_FLIGHT | IO_U_F_BUSY_OK);
Jens Axboe2ecc1b52009-11-04 20:58:09 +01001340 td_io_u_unlock(td);
Jens Axboe0c6e7512007-02-22 11:19:39 +01001341
Jens Axboe5f9099e2009-06-16 22:40:26 +02001342 if (ddir_sync(io_u->ddir)) {
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001343 td->last_was_sync = 1;
Jens Axboe44f29692010-03-09 20:09:44 +01001344 f = io_u->file;
1345 if (f) {
1346 f->first_write = -1ULL;
1347 f->last_write = -1ULL;
1348 }
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001349 return;
1350 }
1351
1352 td->last_was_sync = 0;
Jens Axboe9e144182010-06-15 14:25:36 +02001353 td->last_ddir = io_u->ddir;
Jens Axboe87dc1ab2006-10-24 14:41:26 +02001354
Jens Axboeff58fce2010-08-25 12:02:08 +02001355 if (!io_u->error && ddir_rw(io_u->ddir)) {
Jens Axboe10ba5352006-10-20 11:39:27 +02001356 unsigned int bytes = io_u->buflen - io_u->resid;
Jens Axboe1e97cce2006-12-05 11:44:16 +01001357 const enum fio_ddir idx = io_u->ddir;
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001358 const enum fio_ddir odx = io_u->ddir ^ 1;
Jens Axboeb29ee5b2008-09-11 10:17:26 +02001359 int ret;
Jens Axboe10ba5352006-10-20 11:39:27 +02001360
Jens Axboeb29ee5b2008-09-11 10:17:26 +02001361 td->io_blocks[idx]++;
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001362 td->this_io_blocks[idx]++;
Jens Axboeb29ee5b2008-09-11 10:17:26 +02001363 td->io_bytes[idx] += bytes;
1364 td->this_io_bytes[idx] += bytes;
Jens Axboe10ba5352006-10-20 11:39:27 +02001365
Jens Axboe44f29692010-03-09 20:09:44 +01001366 if (idx == DDIR_WRITE) {
1367 f = io_u->file;
1368 if (f) {
1369 if (f->first_write == -1ULL ||
1370 io_u->offset < f->first_write)
1371 f->first_write = io_u->offset;
1372 if (f->last_write == -1ULL ||
1373 ((io_u->offset + bytes) > f->last_write))
1374 f->last_write = io_u->offset + bytes;
1375 }
1376 }
1377
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001378 if (ramp_time_over(td) && td->runstate == TD_RUNNING) {
1379 account_io_completion(td, io_u, icd, idx, bytes);
Jens Axboe40e1a6f2009-06-11 10:55:39 +02001380
Jens Axboeb23b6a22009-06-11 22:06:23 +02001381 if (__should_check_rate(td, idx)) {
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001382 td->rate_pending_usleep[idx] =
Steven Lang1b8dbf22011-11-09 13:48:01 +01001383 (usec_for_io(td, idx) -
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001384 utime_since_now(&td->start));
Jens Axboeb23b6a22009-06-11 22:06:23 +02001385 }
Steven Lang1b8dbf22011-11-09 13:48:01 +01001386 if (__should_check_rate(td, odx))
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001387 td->rate_pending_usleep[odx] =
Steven Lang1b8dbf22011-11-09 13:48:01 +01001388 (usec_for_io(td, odx) -
Radha Ramachandranba3e4e02009-12-09 22:31:44 +01001389 utime_since_now(&td->start));
Jens Axboe721938a2008-09-10 09:46:16 +02001390 }
Jens Axboe10ba5352006-10-20 11:39:27 +02001391
Jens Axboe660a1cb2007-04-17 15:37:47 +02001392 if (td_write(td) && idx == DDIR_WRITE &&
Shawn Lewis86705792007-11-21 09:35:41 +01001393 td->o.do_verify &&
Jens Axboe41128402007-03-27 08:32:48 +02001394 td->o.verify != VERIFY_NONE)
Jens Axboe10ba5352006-10-20 11:39:27 +02001395 log_io_piece(td, io_u);
1396
Jens Axboeb29ee5b2008-09-11 10:17:26 +02001397 icd->bytes_done[idx] += bytes;
Jens Axboe3af6ef32007-02-18 06:57:43 +01001398
Jens Axboed7762cf2007-02-23 12:34:57 +01001399 if (io_u->end_io) {
Jens Axboe36690c92007-03-26 10:23:34 +02001400 ret = io_u->end_io(td, io_u);
Jens Axboe3af6ef32007-02-18 06:57:43 +01001401 if (ret && !icd->error)
1402 icd->error = ret;
1403 }
Jens Axboeff58fce2010-08-25 12:02:08 +02001404 } else if (io_u->error) {
Jens Axboe10ba5352006-10-20 11:39:27 +02001405 icd->error = io_u->error;
Jens Axboe54517922007-03-05 10:06:06 +01001406 io_u_log_error(td, io_u);
1407 }
Steven Lang06842022011-11-17 09:45:17 +01001408 if (icd->error && td_non_fatal_error(icd->error) &&
1409 (td->o.continue_on_error & td_error_type(io_u->ddir, icd->error))) {
Radha Ramachandranf2bba182009-06-15 08:40:16 +02001410 /*
1411 * If there is a non_fatal error, then add to the error count
1412 * and clear all the errors.
1413 */
1414 update_error_count(td, icd->error);
1415 td_clear_error(td);
1416 icd->error = 0;
1417 io_u->error = 0;
1418 }
Jens Axboe10ba5352006-10-20 11:39:27 +02001419}
1420
Jens Axboe9520ebb2008-10-16 21:03:27 +02001421static void init_icd(struct thread_data *td, struct io_completion_data *icd,
1422 int nr)
Jens Axboe36167d82007-02-18 05:41:31 +01001423{
Jens Axboe9520ebb2008-10-16 21:03:27 +02001424 if (!td->o.disable_clat || !td->o.disable_bw)
1425 fio_gettime(&icd->time, NULL);
Jens Axboe36167d82007-02-18 05:41:31 +01001426
Jens Axboe3af6ef32007-02-18 06:57:43 +01001427 icd->nr = nr;
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001428 icd->account = 1;
Jens Axboe3af6ef32007-02-18 06:57:43 +01001429
Jens Axboe36167d82007-02-18 05:41:31 +01001430 icd->error = 0;
1431 icd->bytes_done[0] = icd->bytes_done[1] = 0;
1432}
1433
Jens Axboe97601022007-02-18 12:47:29 +01001434static void ios_completed(struct thread_data *td,
1435 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +02001436{
1437 struct io_u *io_u;
1438 int i;
1439
Jens Axboe10ba5352006-10-20 11:39:27 +02001440 for (i = 0; i < icd->nr; i++) {
1441 io_u = td->io_ops->event(td, i);
1442
1443 io_completed(td, io_u, icd);
Jens Axboee8462bd2009-07-06 12:59:04 +02001444
1445 if (!(io_u->flags & IO_U_F_FREE_DEF))
1446 put_io_u(td, io_u);
Jens Axboec8eeb9d2011-10-05 14:02:22 +02001447
1448 icd->account = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +02001449 }
1450}
Jens Axboe97601022007-02-18 12:47:29 +01001451
Jens Axboee7e6cfb2007-02-20 10:58:34 +01001452/*
1453 * Complete a single io_u for the sync engines.
1454 */
Jens Axboe581e7142009-06-09 12:47:16 +02001455int io_u_sync_complete(struct thread_data *td, struct io_u *io_u,
1456 unsigned long *bytes)
Jens Axboe97601022007-02-18 12:47:29 +01001457{
1458 struct io_completion_data icd;
1459
Jens Axboe9520ebb2008-10-16 21:03:27 +02001460 init_icd(td, &icd, 1);
Jens Axboe97601022007-02-18 12:47:29 +01001461 io_completed(td, io_u, &icd);
Jens Axboee8462bd2009-07-06 12:59:04 +02001462
1463 if (!(io_u->flags & IO_U_F_FREE_DEF))
1464 put_io_u(td, io_u);
Jens Axboe97601022007-02-18 12:47:29 +01001465
Jens Axboe581e7142009-06-09 12:47:16 +02001466 if (icd.error) {
1467 td_verror(td, icd.error, "io_u_sync_complete");
1468 return -1;
1469 }
Jens Axboe97601022007-02-18 12:47:29 +01001470
Jens Axboe581e7142009-06-09 12:47:16 +02001471 if (bytes) {
1472 bytes[0] += icd.bytes_done[0];
1473 bytes[1] += icd.bytes_done[1];
1474 }
1475
1476 return 0;
Jens Axboe97601022007-02-18 12:47:29 +01001477}
1478
Jens Axboee7e6cfb2007-02-20 10:58:34 +01001479/*
1480 * Called to complete min_events number of io for the async engines.
1481 */
Jens Axboe581e7142009-06-09 12:47:16 +02001482int io_u_queued_complete(struct thread_data *td, int min_evts,
1483 unsigned long *bytes)
Jens Axboe97601022007-02-18 12:47:29 +01001484{
Jens Axboe97601022007-02-18 12:47:29 +01001485 struct io_completion_data icd;
Jens Axboe00de55e2007-02-20 10:45:57 +01001486 struct timespec *tvp = NULL;
Jens Axboe97601022007-02-18 12:47:29 +01001487 int ret;
Davide Libenzi4d06a332007-03-22 07:43:50 +01001488 struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, };
Jens Axboe97601022007-02-18 12:47:29 +01001489
Jens Axboe49504212008-06-05 09:03:30 +02001490 dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts);
Jens Axboeb271fe62008-02-04 10:49:41 +01001491
Jens Axboe49504212008-06-05 09:03:30 +02001492 if (!min_evts)
Jens Axboe00de55e2007-02-20 10:45:57 +01001493 tvp = &ts;
Jens Axboe97601022007-02-18 12:47:29 +01001494
Jens Axboe49504212008-06-05 09:03:30 +02001495 ret = td_io_getevents(td, min_evts, td->o.iodepth_batch_complete, tvp);
Jens Axboe97601022007-02-18 12:47:29 +01001496 if (ret < 0) {
Jens Axboee1161c32007-02-22 19:36:48 +01001497 td_verror(td, -ret, "td_io_getevents");
Jens Axboe97601022007-02-18 12:47:29 +01001498 return ret;
1499 } else if (!ret)
1500 return ret;
1501
Jens Axboe9520ebb2008-10-16 21:03:27 +02001502 init_icd(td, &icd, ret);
Jens Axboe97601022007-02-18 12:47:29 +01001503 ios_completed(td, &icd);
Jens Axboe581e7142009-06-09 12:47:16 +02001504 if (icd.error) {
1505 td_verror(td, icd.error, "io_u_queued_complete");
1506 return -1;
1507 }
Jens Axboe97601022007-02-18 12:47:29 +01001508
Jens Axboe581e7142009-06-09 12:47:16 +02001509 if (bytes) {
1510 bytes[0] += icd.bytes_done[0];
1511 bytes[1] += icd.bytes_done[1];
1512 }
1513
1514 return 0;
Jens Axboe97601022007-02-18 12:47:29 +01001515}
Jens Axboe7e77dd02007-02-20 10:57:34 +01001516
1517/*
1518 * Call when io_u is really queued, to update the submission latency.
1519 */
1520void io_u_queued(struct thread_data *td, struct io_u *io_u)
1521{
Jens Axboe9520ebb2008-10-16 21:03:27 +02001522 if (!td->o.disable_slat) {
1523 unsigned long slat_time;
Jens Axboe7e77dd02007-02-20 10:57:34 +01001524
Jens Axboe9520ebb2008-10-16 21:03:27 +02001525 slat_time = utime_since(&io_u->start_time, &io_u->issue_time);
Jens Axboe29a90dd2009-06-10 06:57:47 +02001526 add_slat_sample(td, io_u->ddir, slat_time, io_u->xfer_buflen);
Jens Axboe9520ebb2008-10-16 21:03:27 +02001527 }
Jens Axboe7e77dd02007-02-20 10:57:34 +01001528}
Jens Axboe433afcb2007-02-22 10:39:01 +01001529
Jens Axboe5973caf2008-05-21 19:52:35 +02001530/*
1531 * "randomly" fill the buffer contents
1532 */
1533void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u,
1534 unsigned int max_bs)
1535{
Jens Axboee84b3712011-01-16 08:32:08 -07001536 io_u->buf_filled_len = 0;
1537
Jens Axboe637ef8d2010-06-21 20:39:38 +02001538 if (!td->o.zero_buffers)
Jens Axboe3545a102011-08-31 15:20:15 -06001539 fill_random_buf(&td->buf_state, io_u->buf, max_bs);
Jens Axboe637ef8d2010-06-21 20:39:38 +02001540 else
1541 memset(io_u->buf, 0, max_bs);
Jens Axboe5973caf2008-05-21 19:52:35 +02001542}