blob: 72f5ff2c707f3a5ae95b65acb002f460c4dabc17 [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 Axboe10ba5352006-10-20 11:39:27 +020011
Jens Axboe97601022007-02-18 12:47:29 +010012struct io_completion_data {
13 int nr; /* input */
Jens Axboe97601022007-02-18 12:47:29 +010014
15 int error; /* output */
16 unsigned long bytes_done[2]; /* output */
17 struct timeval time; /* output */
18};
19
Jens Axboe10ba5352006-10-20 11:39:27 +020020/*
21 * The ->file_map[] contains a map of blocks we have or have not done io
22 * to yet. Used to make sure we cover the entire range in a fair fashion.
23 */
Jens Axboeaec2de22008-04-24 12:44:42 +020024static int random_map_free(struct fio_file *f, const unsigned long long block)
Jens Axboe10ba5352006-10-20 11:39:27 +020025{
Jens Axboeaec2de22008-04-24 12:44:42 +020026 unsigned int idx = RAND_MAP_IDX(f, block);
27 unsigned int bit = RAND_MAP_BIT(f, block);
Jens Axboe10ba5352006-10-20 11:39:27 +020028
Jens Axboe84422ac2008-02-19 20:10:26 +010029 dprint(FD_RANDOM, "free: b=%llu, idx=%u, bit=%u\n", block, idx, bit);
30
Jens Axboede605662008-05-31 00:21:12 +020031 return (f->file_map[idx] & (1 << bit)) == 0;
Jens Axboe10ba5352006-10-20 11:39:27 +020032}
33
34/*
Jens Axboedf415582006-10-20 11:41:03 +020035 * Mark a given offset as used in the map.
36 */
Jens Axboe9bf20612007-03-01 09:33:57 +010037static void mark_random_map(struct thread_data *td, struct io_u *io_u)
Jens Axboedf415582006-10-20 11:41:03 +020038{
Jens Axboe2dc1bbe2007-03-15 15:01:33 +010039 unsigned int min_bs = td->o.rw_min_bs;
Jens Axboe9bf20612007-03-01 09:33:57 +010040 struct fio_file *f = io_u->file;
Jens Axboea00735e2006-11-03 08:58:08 +010041 unsigned long long block;
Jens Axboe3e3357b2008-06-02 09:53:05 +020042 unsigned int blocks, nr_blocks;
Jens Axboedf415582006-10-20 11:41:03 +020043
Jens Axboeb9c5b642008-02-18 14:13:08 +010044 block = (io_u->offset - f->file_offset) / (unsigned long long) min_bs;
Jens Axboec685b5b2007-02-10 20:02:28 +010045 nr_blocks = (io_u->buflen + min_bs - 1) / min_bs;
Jens Axboe3e3357b2008-06-02 09:53:05 +020046 blocks = 0;
Jens Axboec685b5b2007-02-10 20:02:28 +010047
Jens Axboe3e3357b2008-06-02 09:53:05 +020048 while (nr_blocks) {
49 unsigned int this_blocks, mask;
Jens Axboedf415582006-10-20 11:41:03 +020050 unsigned int idx, bit;
51
Jens Axboe1e3d53a2007-03-22 19:01:48 +010052 /*
53 * If we have a mixed random workload, we may
54 * encounter blocks we already did IO to.
55 */
Jens Axboe8b113b42008-06-02 10:15:48 +020056 if ((td->o.ddir_nr == 1) && !random_map_free(f, block)) {
57 if (!blocks)
58 blocks = 1;
Jens Axboedf415582006-10-20 11:41:03 +020059 break;
Jens Axboe8b113b42008-06-02 10:15:48 +020060 }
Jens Axboedf415582006-10-20 11:41:03 +020061
Jens Axboeaec2de22008-04-24 12:44:42 +020062 idx = RAND_MAP_IDX(f, block);
63 bit = RAND_MAP_BIT(f, block);
Jens Axboedf415582006-10-20 11:41:03 +020064
Jens Axboe0032bf92007-02-13 17:39:56 +010065 fio_assert(td, idx < f->num_maps);
Jens Axboedf415582006-10-20 11:41:03 +020066
Jens Axboe3e3357b2008-06-02 09:53:05 +020067 this_blocks = nr_blocks;
68 if (this_blocks + bit > BLOCKS_PER_MAP)
69 this_blocks = BLOCKS_PER_MAP - bit;
70
71 if (this_blocks == BLOCKS_PER_MAP)
72 mask = -1U;
73 else
74 mask = ((1U << this_blocks) - 1) << bit;
75
Jens Axboe3e3357b2008-06-02 09:53:05 +020076 f->file_map[idx] |= mask;
77 nr_blocks -= this_blocks;
78 blocks += this_blocks;
Jens Axboec9dd34b2008-06-02 10:09:43 +020079 block += this_blocks;
Jens Axboedf415582006-10-20 11:41:03 +020080 }
81
Jens Axboea00735e2006-11-03 08:58:08 +010082 if ((blocks * min_bs) < io_u->buflen)
83 io_u->buflen = blocks * min_bs;
Jens Axboedf415582006-10-20 11:41:03 +020084}
85
Jens Axboe3e3357b2008-06-02 09:53:05 +020086static unsigned long long last_block(struct thread_data *td, struct fio_file *f,
87 enum fio_ddir ddir)
Jens Axboe2ba1c292008-02-01 13:16:38 +010088{
89 unsigned long long max_blocks;
Jens Axboed9dd70f2008-05-23 12:37:23 +020090 unsigned long long max_size;
Jens Axboe2ba1c292008-02-01 13:16:38 +010091
Jens Axboed9dd70f2008-05-23 12:37:23 +020092 /*
93 * Hmm, should we make sure that ->io_size <= ->real_file_size?
94 */
95 max_size = f->io_size;
96 if (max_size > f->real_file_size)
97 max_size = f->real_file_size;
98
Jens Axboe2b7a01d2009-03-11 11:00:13 +010099 max_blocks = max_size / (unsigned long long) td->o.ba[ddir];
Jens Axboe2ba1c292008-02-01 13:16:38 +0100100 if (!max_blocks)
101 return 0;
102
Jens Axboe67778e82008-05-15 09:20:08 +0200103 return max_blocks;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100104}
105
Jens Axboedf415582006-10-20 11:41:03 +0200106/*
Jens Axboe10ba5352006-10-20 11:39:27 +0200107 * Return the next free block in the map.
108 */
109static int get_next_free_block(struct thread_data *td, struct fio_file *f,
Jens Axboe4ba66132008-02-05 10:05:50 +0100110 enum fio_ddir ddir, unsigned long long *b)
Jens Axboe10ba5352006-10-20 11:39:27 +0200111{
Jens Axboe84422ac2008-02-19 20:10:26 +0100112 unsigned long long min_bs = td->o.rw_min_bs;
Jens Axboe10ba5352006-10-20 11:39:27 +0200113 int i;
114
Jens Axboec685b5b2007-02-10 20:02:28 +0100115 i = f->last_free_lookup;
116 *b = (i * BLOCKS_PER_MAP);
Radha Ramachandran899c29f2009-04-22 08:17:42 +0200117 while ((*b) * min_bs < f->real_file_size &&
118 (*b) * min_bs < f->io_size) {
Jens Axboede605662008-05-31 00:21:12 +0200119 if (f->file_map[i] != (unsigned int) -1) {
Jens Axboe697a6062008-05-31 00:04:45 +0200120 *b += ffz(f->file_map[i]);
Jens Axboe4ba66132008-02-05 10:05:50 +0100121 if (*b > last_block(td, f, ddir))
Jens Axboe2ba1c292008-02-01 13:16:38 +0100122 break;
Jens Axboec685b5b2007-02-10 20:02:28 +0100123 f->last_free_lookup = i;
Jens Axboe10ba5352006-10-20 11:39:27 +0200124 return 0;
125 }
126
127 *b += BLOCKS_PER_MAP;
128 i++;
129 }
130
Jens Axboe2ba1c292008-02-01 13:16:38 +0100131 dprint(FD_IO, "failed finding a free block\n");
Jens Axboe10ba5352006-10-20 11:39:27 +0200132 return 1;
133}
134
Jens Axboeec4015d2007-03-23 08:04:27 +0100135static int get_next_rand_offset(struct thread_data *td, struct fio_file *f,
Jens Axboe4ba66132008-02-05 10:05:50 +0100136 enum fio_ddir ddir, unsigned long long *b)
Jens Axboeec4015d2007-03-23 08:04:27 +0100137{
Jens Axboe84422ac2008-02-19 20:10:26 +0100138 unsigned long long r;
Jens Axboeec4015d2007-03-23 08:04:27 +0100139 int loops = 5;
140
141 do {
142 r = os_random_long(&td->random_state);
Jens Axboe84422ac2008-02-19 20:10:26 +0100143 dprint(FD_RANDOM, "off rand %llu\n", r);
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100144 *b = (last_block(td, f, ddir) - 1)
Jens Axboedc873b62008-06-04 20:13:04 +0200145 * (r / ((unsigned long long) OS_RAND_MAX + 1.0));
Jens Axboe2ba1c292008-02-01 13:16:38 +0100146
Jens Axboe43c63a72007-05-21 13:23:30 +0200147 /*
148 * if we are not maintaining a random map, we are done.
149 */
Jens Axboe303032a2008-03-26 10:11:10 +0100150 if (!file_randommap(td, f))
Jens Axboe43c63a72007-05-21 13:23:30 +0200151 return 0;
152
153 /*
Jens Axboe84422ac2008-02-19 20:10:26 +0100154 * calculate map offset and check if it's free
Jens Axboe43c63a72007-05-21 13:23:30 +0200155 */
Jens Axboeaec2de22008-04-24 12:44:42 +0200156 if (random_map_free(f, *b))
Jens Axboe43c63a72007-05-21 13:23:30 +0200157 return 0;
158
Jens Axboe84422ac2008-02-19 20:10:26 +0100159 dprint(FD_RANDOM, "get_next_rand_offset: offset %llu busy\n",
160 *b);
Jens Axboe43c63a72007-05-21 13:23:30 +0200161 } while (--loops);
Jens Axboeec4015d2007-03-23 08:04:27 +0100162
163 /*
Jens Axboe43c63a72007-05-21 13:23:30 +0200164 * we get here, if we didn't suceed in looking up a block. generate
165 * a random start offset into the filemap, and find the first free
166 * block from there.
Jens Axboeec4015d2007-03-23 08:04:27 +0100167 */
Jens Axboe43c63a72007-05-21 13:23:30 +0200168 loops = 10;
169 do {
Jens Axboedc873b62008-06-04 20:13:04 +0200170 f->last_free_lookup = (f->num_maps - 1) *
171 (r / (OS_RAND_MAX + 1.0));
Jens Axboe4ba66132008-02-05 10:05:50 +0100172 if (!get_next_free_block(td, f, ddir, b))
Jens Axboe43c63a72007-05-21 13:23:30 +0200173 return 0;
Jens Axboeec4015d2007-03-23 08:04:27 +0100174
Jens Axboe43c63a72007-05-21 13:23:30 +0200175 r = os_random_long(&td->random_state);
176 } while (--loops);
177
178 /*
179 * that didn't work either, try exhaustive search from the start
180 */
181 f->last_free_lookup = 0;
Jens Axboe4ba66132008-02-05 10:05:50 +0100182 return get_next_free_block(td, f, ddir, b);
Jens Axboeec4015d2007-03-23 08:04:27 +0100183}
184
Jens Axboe10ba5352006-10-20 11:39:27 +0200185/*
186 * For random io, generate a random new block and see if it's used. Repeat
187 * until we find a free one. For sequential io, just return the end of
188 * the last io issued.
189 */
Jens Axboe9bf20612007-03-01 09:33:57 +0100190static int get_next_offset(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200191{
Jens Axboe9bf20612007-03-01 09:33:57 +0100192 struct fio_file *f = io_u->file;
Jens Axboeec4015d2007-03-23 08:04:27 +0100193 unsigned long long b;
Jens Axboe4ba66132008-02-05 10:05:50 +0100194 enum fio_ddir ddir = io_u->ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200195
Jens Axboeec4015d2007-03-23 08:04:27 +0100196 if (td_random(td) && (td->o.ddir_nr && !--td->ddir_nr)) {
197 td->ddir_nr = td->o.ddir_nr;
Jens Axboe10ba5352006-10-20 11:39:27 +0200198
Jens Axboe683023e2009-03-04 08:41:31 +0100199 if (get_next_rand_offset(td, f, ddir, &b)) {
200 dprint(FD_IO, "%s: getting rand offset failed\n",
201 f->file_name);
Jens Axboebca4ed42007-02-12 05:13:23 +0100202 return 1;
Jens Axboe683023e2009-03-04 08:41:31 +0100203 }
Jens Axboe43063a12007-03-27 20:21:24 +0200204 } else {
ljzhang,Yaxin Hu,Jianchao Tang0c3d7682007-07-26 10:59:25 +0200205 if (f->last_pos >= f->real_file_size) {
Jens Axboe4ba66132008-02-05 10:05:50 +0100206 if (!td_random(td) ||
Jens Axboe683023e2009-03-04 08:41:31 +0100207 get_next_rand_offset(td, f, ddir, &b)) {
208 dprint(FD_IO, "%s: pos %llu > size %llu\n",
209 f->file_name, f->last_pos,
210 f->real_file_size);
ljzhang,Yaxin Hu,Jianchao Tang0c3d7682007-07-26 10:59:25 +0200211 return 1;
Jens Axboe683023e2009-03-04 08:41:31 +0100212 }
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200213 } else
Jens Axboe4ba66132008-02-05 10:05:50 +0100214 b = (f->last_pos - f->file_offset) / td->o.min_bs[ddir];
Jens Axboe43063a12007-03-27 20:21:24 +0200215 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200216
Jens Axboe2b7a01d2009-03-11 11:00:13 +0100217 io_u->offset = b * td->o.ba[ddir];
Jens Axboe009bd842008-05-15 10:19:46 +0200218 if (io_u->offset >= f->io_size) {
219 dprint(FD_IO, "get_next_offset: offset %llu >= io_size %llu\n",
220 io_u->offset, f->io_size);
221 return 1;
222 }
223
224 io_u->offset += f->file_offset;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100225 if (io_u->offset >= f->real_file_size) {
226 dprint(FD_IO, "get_next_offset: offset %llu >= size %llu\n",
227 io_u->offset, f->real_file_size);
Jens Axboe10ba5352006-10-20 11:39:27 +0200228 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100229 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200230
231 return 0;
232}
233
Jens Axboef3059de2008-06-11 15:37:32 +0200234static inline int is_power_of_2(unsigned int val)
235{
236 return (val != 0 && ((val & (val - 1)) == 0));
237}
238
Jens Axboe9bf20612007-03-01 09:33:57 +0100239static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200240{
Jens Axboebca4ed42007-02-12 05:13:23 +0100241 const int ddir = io_u->ddir;
Jens Axboef3f552b2008-06-13 10:27:05 +0200242 unsigned int uninitialized_var(buflen);
Jens Axboef3059de2008-06-11 15:37:32 +0200243 unsigned int minbs, maxbs;
Jens Axboe10ba5352006-10-20 11:39:27 +0200244 long r;
245
Jens Axboef3059de2008-06-11 15:37:32 +0200246 minbs = td->o.min_bs[ddir];
247 maxbs = td->o.max_bs[ddir];
248
249 if (minbs == maxbs)
250 buflen = minbs;
Jens Axboe10ba5352006-10-20 11:39:27 +0200251 else {
252 r = os_random_long(&td->bsrange_state);
Jens Axboe720e84a2009-04-21 08:29:55 +0200253 if (!td->o.bssplit_nr[ddir]) {
Jens Axboef3059de2008-06-11 15:37:32 +0200254 buflen = 1 + (unsigned int) ((double) maxbs *
255 (r / (OS_RAND_MAX + 1.0)));
256 if (buflen < minbs)
257 buflen = minbs;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100258 } else {
Jens Axboe564ca972007-12-14 12:21:19 +0100259 long perc = 0;
260 unsigned int i;
261
Jens Axboe720e84a2009-04-21 08:29:55 +0200262 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
263 struct bssplit *bsp = &td->o.bssplit[ddir][i];
Jens Axboe564ca972007-12-14 12:21:19 +0100264
265 buflen = bsp->bs;
266 perc += bsp->perc;
Jens Axboef3059de2008-06-11 15:37:32 +0200267 if (r <= ((OS_RAND_MAX / 100L) * perc))
Jens Axboe564ca972007-12-14 12:21:19 +0100268 break;
269 }
270 }
Jens Axboef3059de2008-06-11 15:37:32 +0200271 if (!td->o.bs_unaligned && is_power_of_2(minbs))
272 buflen = (buflen + minbs - 1) & ~(minbs - 1);
Jens Axboe10ba5352006-10-20 11:39:27 +0200273 }
274
Jens Axboe4ba66132008-02-05 10:05:50 +0100275 if (io_u->offset + buflen > io_u->file->real_file_size) {
276 dprint(FD_IO, "lower buflen %u -> %u (ddir=%d)\n", buflen,
Jens Axboef3059de2008-06-11 15:37:32 +0200277 minbs, ddir);
278 buflen = minbs;
Jens Axboe4ba66132008-02-05 10:05:50 +0100279 }
Jens Axboe6a5e6882007-07-26 10:47:51 +0200280
Jens Axboe10ba5352006-10-20 11:39:27 +0200281 return buflen;
282}
283
Jens Axboeafe24a52007-03-16 20:27:27 +0100284static void set_rwmix_bytes(struct thread_data *td)
285{
Jens Axboeafe24a52007-03-16 20:27:27 +0100286 unsigned int diff;
287
288 /*
289 * we do time or byte based switch. this is needed because
290 * buffered writes may issue a lot quicker than they complete,
291 * whereas reads do not.
292 */
Jens Axboee47f7992007-03-21 14:05:39 +0100293 diff = td->o.rwmix[td->rwmix_ddir ^ 1];
Jens Axboe04c540d2008-05-28 10:35:26 +0200294 td->rwmix_issues = (td->io_issues[td->rwmix_ddir] * diff) / 100;
Jens Axboee47f7992007-03-21 14:05:39 +0100295}
296
297static inline enum fio_ddir get_rand_ddir(struct thread_data *td)
298{
299 unsigned int v;
300 long r;
301
302 r = os_random_long(&td->rwmix_state);
Jens Axboedc873b62008-06-04 20:13:04 +0200303 v = 1 + (int) (100.0 * (r / (OS_RAND_MAX + 1.0)));
Jens Axboe04c540d2008-05-28 10:35:26 +0200304 if (v <= td->o.rwmix[DDIR_READ])
Jens Axboee47f7992007-03-21 14:05:39 +0100305 return DDIR_READ;
306
307 return DDIR_WRITE;
Jens Axboeafe24a52007-03-16 20:27:27 +0100308}
309
Jens Axboe581e7142009-06-09 12:47:16 +0200310static enum fio_ddir rate_ddir(struct thread_data *td, enum fio_ddir ddir)
311{
312 enum fio_ddir odir = ddir ^ 1;
313 struct timeval t;
314 long usec;
315
316 if (td->rate_pending_usleep[ddir] <= 0)
317 return ddir;
318
319 /*
320 * We have too much pending sleep in this direction. See if we
321 * should switch.
322 */
323 if (td_rw(td)) {
324 /*
325 * Other direction does not have too much pending, switch
326 */
327 if (td->rate_pending_usleep[odir] < 100000)
328 return odir;
329
330 /*
331 * Both directions have pending sleep. Sleep the minimum time
332 * and deduct from both.
333 */
334 if (td->rate_pending_usleep[ddir] <=
335 td->rate_pending_usleep[odir]) {
336 usec = td->rate_pending_usleep[ddir];
337 } else {
338 usec = td->rate_pending_usleep[odir];
339 ddir = odir;
340 }
341 } else
342 usec = td->rate_pending_usleep[ddir];
343
344 fio_gettime(&t, NULL);
345 usec_sleep(td, usec);
346 usec = utime_since_now(&t);
347
348 td->rate_pending_usleep[ddir] -= usec;
349
350 odir = ddir ^ 1;
351 if (td_rw(td) && __should_check_rate(td, odir))
352 td->rate_pending_usleep[odir] -= usec;
353
354 return ddir;
355}
356
Jens Axboe10ba5352006-10-20 11:39:27 +0200357/*
358 * Return the data direction for the next io_u. If the job is a
359 * mixed read/write workload, check the rwmix cycle and switch if
360 * necessary.
361 */
Jens Axboe1e97cce2006-12-05 11:44:16 +0100362static enum fio_ddir get_rw_ddir(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200363{
Jens Axboe581e7142009-06-09 12:47:16 +0200364 enum fio_ddir ddir;
365
Jens Axboe10ba5352006-10-20 11:39:27 +0200366 if (td_rw(td)) {
Jens Axboe10ba5352006-10-20 11:39:27 +0200367 /*
368 * Check if it's time to seed a new data direction.
369 */
Jens Axboee4928662008-04-07 09:19:46 +0200370 if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) {
Jens Axboee47f7992007-03-21 14:05:39 +0100371 /*
372 * Put a top limit on how many bytes we do for
373 * one data direction, to avoid overflowing the
374 * ranges too much
375 */
376 ddir = get_rand_ddir(td);
Jens Axboee47f7992007-03-21 14:05:39 +0100377
378 if (ddir != td->rwmix_ddir)
379 set_rwmix_bytes(td);
380
381 td->rwmix_ddir = ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200382 }
Jens Axboe581e7142009-06-09 12:47:16 +0200383 ddir = td->rwmix_ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200384 } else if (td_read(td))
Jens Axboe581e7142009-06-09 12:47:16 +0200385 ddir = DDIR_READ;
Jens Axboe10ba5352006-10-20 11:39:27 +0200386 else
Jens Axboe581e7142009-06-09 12:47:16 +0200387 ddir = DDIR_WRITE;
388
389 td->rwmix_ddir = rate_ddir(td, ddir);
390 return td->rwmix_ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200391}
392
Jens Axboe60f2c652008-05-16 12:31:36 +0200393static void put_file_log(struct thread_data *td, struct fio_file *f)
394{
395 int ret = put_file(td, f);
396
397 if (ret)
398 td_verror(td, ret, "file close");
399}
400
Jens Axboe10ba5352006-10-20 11:39:27 +0200401void put_io_u(struct thread_data *td, struct io_u *io_u)
402{
Jens Axboe0c6e7512007-02-22 11:19:39 +0100403 assert((io_u->flags & IO_U_F_FREE) == 0);
404 io_u->flags |= IO_U_F_FREE;
405
Jens Axboe60f2c652008-05-16 12:31:36 +0200406 if (io_u->file)
407 put_file_log(td, io_u->file);
Jens Axboe2dbdab72007-04-26 10:21:15 +0200408
Jens Axboe10ba5352006-10-20 11:39:27 +0200409 io_u->file = NULL;
Jens Axboe01743ee2008-06-02 12:19:19 +0200410 flist_del(&io_u->list);
411 flist_add(&io_u->list, &td->io_u_freelist);
Jens Axboe10ba5352006-10-20 11:39:27 +0200412 td->cur_depth--;
413}
414
Jens Axboe755200a2007-02-19 13:08:12 +0100415void requeue_io_u(struct thread_data *td, struct io_u **io_u)
416{
417 struct io_u *__io_u = *io_u;
418
Jens Axboe465221b2008-05-30 22:07:49 +0200419 dprint(FD_IO, "requeue %p\n", __io_u);
420
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100421 __io_u->flags |= IO_U_F_FREE;
Jens Axboee4f54ad2008-02-04 10:56:07 +0100422 if ((__io_u->flags & IO_U_F_FLIGHT) && (__io_u->ddir != DDIR_SYNC))
423 td->io_issues[__io_u->ddir]--;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100424
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100425 __io_u->flags &= ~IO_U_F_FLIGHT;
426
Jens Axboe01743ee2008-06-02 12:19:19 +0200427 flist_del(&__io_u->list);
428 flist_add_tail(&__io_u->list, &td->io_u_requeues);
Jens Axboe755200a2007-02-19 13:08:12 +0100429 td->cur_depth--;
430 *io_u = NULL;
431}
432
Jens Axboe9bf20612007-03-01 09:33:57 +0100433static int fill_io_u(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200434{
Jens Axboeb4c5e1a2007-10-25 18:44:45 +0200435 if (td->io_ops->flags & FIO_NOIO)
436 goto out;
437
Jens Axboe10ba5352006-10-20 11:39:27 +0200438 /*
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200439 * see if it's time to sync
440 */
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100441 if (td->o.fsync_blocks &&
442 !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) &&
443 td->io_issues[DDIR_WRITE] && should_fsync(td)) {
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200444 io_u->ddir = DDIR_SYNC;
Jens Axboec38e9462007-03-27 08:48:48 +0200445 goto out;
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200446 }
447
Jens Axboea00735e2006-11-03 08:58:08 +0100448 io_u->ddir = get_rw_ddir(td);
449
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200450 /*
Jens Axboe48f5abd2007-07-20 13:25:04 +0200451 * See if it's time to switch to a new zone
452 */
453 if (td->zone_bytes >= td->o.zone_size) {
454 td->zone_bytes = 0;
455 io_u->file->last_pos += td->o.zone_skip;
456 td->io_skip_bytes += td->o.zone_skip;
457 }
458
459 /*
Jens Axboec685b5b2007-02-10 20:02:28 +0100460 * No log, let the seq/rand engine retrieve the next buflen and
461 * position.
Jens Axboe10ba5352006-10-20 11:39:27 +0200462 */
Jens Axboe2ba1c292008-02-01 13:16:38 +0100463 if (get_next_offset(td, io_u)) {
464 dprint(FD_IO, "io_u %p, failed getting offset\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100465 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100466 }
Jens Axboec685b5b2007-02-10 20:02:28 +0100467
Jens Axboe9bf20612007-03-01 09:33:57 +0100468 io_u->buflen = get_next_buflen(td, io_u);
Jens Axboe2ba1c292008-02-01 13:16:38 +0100469 if (!io_u->buflen) {
470 dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100471 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100472 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200473
Jens Axboe2ba1c292008-02-01 13:16:38 +0100474 if (io_u->offset + io_u->buflen > io_u->file->real_file_size) {
475 dprint(FD_IO, "io_u %p, offset too large\n", io_u);
Jens Axboe4ba66132008-02-05 10:05:50 +0100476 dprint(FD_IO, " off=%llu/%lu > %llu\n", io_u->offset,
477 io_u->buflen, io_u->file->real_file_size);
Jens Axboe6a5e6882007-07-26 10:47:51 +0200478 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100479 }
Jens Axboe6a5e6882007-07-26 10:47:51 +0200480
Jens Axboebca4ed42007-02-12 05:13:23 +0100481 /*
482 * mark entry before potentially trimming io_u
483 */
Jens Axboe303032a2008-03-26 10:11:10 +0100484 if (td_random(td) && file_randommap(td, io_u->file))
Jens Axboe9bf20612007-03-01 09:33:57 +0100485 mark_random_map(td, io_u);
Jens Axboe10ba5352006-10-20 11:39:27 +0200486
Jens Axboebca4ed42007-02-12 05:13:23 +0100487 /*
488 * If using a write iolog, store this entry.
489 */
Jens Axboec38e9462007-03-27 08:48:48 +0200490out:
Jens Axboe2ba1c292008-02-01 13:16:38 +0100491 dprint_io_u(io_u, "fill_io_u");
Jens Axboed9d91e32008-01-31 13:25:42 +0100492 td->zone_bytes += io_u->buflen;
Jens Axboef29b25a2007-07-23 08:56:43 +0200493 log_io_u(td, io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100494 return 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200495}
496
Jens Axboe838bc702008-05-22 13:08:23 +0200497static void __io_u_mark_map(unsigned int *map, unsigned int nr)
498{
499 int index = 0;
500
501 switch (nr) {
502 default:
503 index = 6;
504 break;
505 case 33 ... 64:
506 index = 5;
507 break;
508 case 17 ... 32:
509 index = 4;
510 break;
511 case 9 ... 16:
512 index = 3;
513 break;
514 case 5 ... 8:
515 index = 2;
516 break;
517 case 1 ... 4:
518 index = 1;
519 case 0:
520 break;
521 }
522
523 map[index]++;
524}
525
526void io_u_mark_submit(struct thread_data *td, unsigned int nr)
527{
528 __io_u_mark_map(td->ts.io_u_submit, nr);
529 td->ts.total_submit++;
530}
531
532void io_u_mark_complete(struct thread_data *td, unsigned int nr)
533{
534 __io_u_mark_map(td->ts.io_u_complete, nr);
535 td->ts.total_complete++;
536}
537
Jens Axboed8005752008-05-15 09:49:09 +0200538void io_u_mark_depth(struct thread_data *td, unsigned int nr)
Jens Axboe71619dc2007-01-13 23:56:33 +0100539{
540 int index = 0;
541
542 switch (td->cur_depth) {
543 default:
Jens Axboea783e612007-06-19 09:50:28 +0200544 index = 6;
545 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100546 case 32 ... 63:
Jens Axboea783e612007-06-19 09:50:28 +0200547 index = 5;
548 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100549 case 16 ... 31:
Jens Axboea783e612007-06-19 09:50:28 +0200550 index = 4;
551 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100552 case 8 ... 15:
Jens Axboea783e612007-06-19 09:50:28 +0200553 index = 3;
554 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100555 case 4 ... 7:
Jens Axboea783e612007-06-19 09:50:28 +0200556 index = 2;
557 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100558 case 2 ... 3:
Jens Axboea783e612007-06-19 09:50:28 +0200559 index = 1;
Jens Axboe71619dc2007-01-13 23:56:33 +0100560 case 1:
561 break;
562 }
563
Jens Axboe3bec7ae2008-05-14 21:08:37 +0200564 td->ts.io_u_map[index] += nr;
Jens Axboe71619dc2007-01-13 23:56:33 +0100565}
566
Jens Axboe04a0fea2007-06-19 12:48:41 +0200567static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec)
568{
569 int index = 0;
570
571 assert(usec < 1000);
572
573 switch (usec) {
574 case 750 ... 999:
575 index = 9;
576 break;
577 case 500 ... 749:
578 index = 8;
579 break;
580 case 250 ... 499:
581 index = 7;
582 break;
583 case 100 ... 249:
584 index = 6;
585 break;
586 case 50 ... 99:
587 index = 5;
588 break;
589 case 20 ... 49:
590 index = 4;
591 break;
592 case 10 ... 19:
593 index = 3;
594 break;
595 case 4 ... 9:
596 index = 2;
597 break;
598 case 2 ... 3:
599 index = 1;
600 case 0 ... 1:
601 break;
602 }
603
604 assert(index < FIO_IO_U_LAT_U_NR);
605 td->ts.io_u_lat_u[index]++;
606}
607
608static void io_u_mark_lat_msec(struct thread_data *td, unsigned long msec)
Jens Axboeec118302007-02-17 04:38:20 +0100609{
610 int index = 0;
611
612 switch (msec) {
613 default:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200614 index = 11;
615 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100616 case 1000 ... 1999:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200617 index = 10;
618 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100619 case 750 ... 999:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200620 index = 9;
621 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100622 case 500 ... 749:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200623 index = 8;
624 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100625 case 250 ... 499:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200626 index = 7;
627 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100628 case 100 ... 249:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200629 index = 6;
630 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100631 case 50 ... 99:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200632 index = 5;
633 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100634 case 20 ... 49:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200635 index = 4;
636 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100637 case 10 ... 19:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200638 index = 3;
639 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100640 case 4 ... 9:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200641 index = 2;
642 break;
Jens Axboeec118302007-02-17 04:38:20 +0100643 case 2 ... 3:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200644 index = 1;
Jens Axboeec118302007-02-17 04:38:20 +0100645 case 0 ... 1:
646 break;
647 }
648
Jens Axboe04a0fea2007-06-19 12:48:41 +0200649 assert(index < FIO_IO_U_LAT_M_NR);
650 td->ts.io_u_lat_m[index]++;
651}
652
653static void io_u_mark_latency(struct thread_data *td, unsigned long usec)
654{
655 if (usec < 1000)
656 io_u_mark_lat_usec(td, usec);
657 else
658 io_u_mark_lat_msec(td, usec / 1000);
Jens Axboeec118302007-02-17 04:38:20 +0100659}
660
Jens Axboe0aabe162007-02-23 08:45:55 +0100661/*
662 * Get next file to service by choosing one at random
663 */
Jens Axboe2cc52932009-06-09 14:14:20 +0200664static struct fio_file *get_next_file_rand(struct thread_data *td,
665 enum fio_file_flags goodf,
Jens Axboed6aed792009-06-03 08:41:15 +0200666 enum fio_file_flags badf)
Jens Axboe0aabe162007-02-23 08:45:55 +0100667{
Jens Axboe0aabe162007-02-23 08:45:55 +0100668 struct fio_file *f;
Jens Axboe1c178182007-03-13 13:25:18 +0100669 int fno;
Jens Axboe0aabe162007-02-23 08:45:55 +0100670
671 do {
Jens Axboe7c83c082007-03-01 10:04:15 +0100672 long r = os_random_long(&td->next_file_state);
Jens Axboe87b10672009-03-04 09:39:47 +0100673 int opened = 0;
Jens Axboe7c83c082007-03-01 10:04:15 +0100674
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100675 fno = (unsigned int) ((double) td->o.nr_files
Jens Axboedc873b62008-06-04 20:13:04 +0200676 * (r / (OS_RAND_MAX + 1.0)));
Jens Axboe126d65c2008-03-01 18:04:31 +0100677 f = td->files[fno];
Jens Axboed6aed792009-06-03 08:41:15 +0200678 if (fio_file_done(f))
Jens Axboe059e63c2007-03-27 20:34:47 +0200679 continue;
Jens Axboe1c178182007-03-13 13:25:18 +0100680
Jens Axboed6aed792009-06-03 08:41:15 +0200681 if (!fio_file_open(f)) {
Jens Axboe87b10672009-03-04 09:39:47 +0100682 int err;
683
684 err = td_io_open_file(td, f);
685 if (err)
686 continue;
687 opened = 1;
688 }
689
Jens Axboe2ba1c292008-02-01 13:16:38 +0100690 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) {
691 dprint(FD_FILE, "get_next_file_rand: %p\n", f);
Jens Axboe0aabe162007-02-23 08:45:55 +0100692 return f;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100693 }
Jens Axboe87b10672009-03-04 09:39:47 +0100694 if (opened)
695 td_io_close_file(td, f);
Jens Axboe0aabe162007-02-23 08:45:55 +0100696 } while (1);
697}
698
699/*
700 * Get next file to service by doing round robin between all available ones
701 */
Jens Axboe1c178182007-03-13 13:25:18 +0100702static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf,
703 int badf)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100704{
705 unsigned int old_next_file = td->next_file;
706 struct fio_file *f;
707
708 do {
Jens Axboe87b10672009-03-04 09:39:47 +0100709 int opened = 0;
710
Jens Axboe126d65c2008-03-01 18:04:31 +0100711 f = td->files[td->next_file];
Jens Axboe3d7c3912007-02-19 13:16:12 +0100712
713 td->next_file++;
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100714 if (td->next_file >= td->o.nr_files)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100715 td->next_file = 0;
716
Jens Axboe87b10672009-03-04 09:39:47 +0100717 dprint(FD_FILE, "trying file %s %x\n", f->file_name, f->flags);
Jens Axboed6aed792009-06-03 08:41:15 +0200718 if (fio_file_done(f)) {
Jens Axboed5ed68e2007-03-28 09:33:43 +0200719 f = NULL;
Jens Axboe059e63c2007-03-27 20:34:47 +0200720 continue;
Jens Axboed5ed68e2007-03-28 09:33:43 +0200721 }
Jens Axboe059e63c2007-03-27 20:34:47 +0200722
Jens Axboed6aed792009-06-03 08:41:15 +0200723 if (!fio_file_open(f)) {
Jens Axboe87b10672009-03-04 09:39:47 +0100724 int err;
725
726 err = td_io_open_file(td, f);
Jens Axboeb5696bf2009-03-04 16:03:49 +0100727 if (err) {
728 dprint(FD_FILE, "error %d on open of %s\n",
729 err, f->file_name);
Jens Axboe87c27b42009-05-20 10:45:12 +0200730 f = NULL;
Jens Axboe87b10672009-03-04 09:39:47 +0100731 continue;
Jens Axboeb5696bf2009-03-04 16:03:49 +0100732 }
Jens Axboe87b10672009-03-04 09:39:47 +0100733 opened = 1;
734 }
735
Jens Axboeb5696bf2009-03-04 16:03:49 +0100736 dprint(FD_FILE, "goodf=%x, badf=%x, ff=%x\n", goodf, badf, f->flags);
Jens Axboe1c178182007-03-13 13:25:18 +0100737 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
Jens Axboe3d7c3912007-02-19 13:16:12 +0100738 break;
739
Jens Axboe87b10672009-03-04 09:39:47 +0100740 if (opened)
741 td_io_close_file(td, f);
742
Jens Axboe3d7c3912007-02-19 13:16:12 +0100743 f = NULL;
744 } while (td->next_file != old_next_file);
745
Jens Axboe2ba1c292008-02-01 13:16:38 +0100746 dprint(FD_FILE, "get_next_file_rr: %p\n", f);
Jens Axboe3d7c3912007-02-19 13:16:12 +0100747 return f;
748}
749
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100750static struct fio_file *get_next_file(struct thread_data *td)
751{
Jens Axboe1907dbc2007-03-12 11:44:28 +0100752 struct fio_file *f;
753
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100754 assert(td->o.nr_files <= td->files_index);
Jens Axboe1c178182007-03-13 13:25:18 +0100755
Jens Axboeb5696bf2009-03-04 16:03:49 +0100756 if (td->nr_done_files >= td->o.nr_files) {
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100757 dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d,"
758 " nr_files=%d\n", td->nr_open_files,
759 td->nr_done_files,
760 td->o.nr_files);
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100761 return NULL;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100762 }
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100763
Jens Axboe1907dbc2007-03-12 11:44:28 +0100764 f = td->file_service_file;
Jens Axboed6aed792009-06-03 08:41:15 +0200765 if (f && fio_file_open(f) && !fio_file_closing(f)) {
Jens Axboea086c252009-03-04 08:27:37 +0100766 if (td->o.file_service_type == FIO_FSERVICE_SEQ)
767 goto out;
768 if (td->file_service_left--)
769 goto out;
770 }
Jens Axboe1907dbc2007-03-12 11:44:28 +0100771
Jens Axboea086c252009-03-04 08:27:37 +0100772 if (td->o.file_service_type == FIO_FSERVICE_RR ||
773 td->o.file_service_type == FIO_FSERVICE_SEQ)
Jens Axboed6aed792009-06-03 08:41:15 +0200774 f = get_next_file_rr(td, FIO_FILE_open, FIO_FILE_closing);
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100775 else
Jens Axboed6aed792009-06-03 08:41:15 +0200776 f = get_next_file_rand(td, FIO_FILE_open, FIO_FILE_closing);
Jens Axboe1907dbc2007-03-12 11:44:28 +0100777
778 td->file_service_file = f;
779 td->file_service_left = td->file_service_nr - 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100780out:
Jens Axboe683023e2009-03-04 08:41:31 +0100781 dprint(FD_FILE, "get_next_file: %p [%s]\n", f, f->file_name);
Jens Axboe1907dbc2007-03-12 11:44:28 +0100782 return f;
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100783}
784
Jens Axboe429f6672007-07-23 10:38:43 +0200785static int set_io_u_file(struct thread_data *td, struct io_u *io_u)
786{
787 struct fio_file *f;
788
789 do {
790 f = get_next_file(td);
791 if (!f)
792 return 1;
793
Jens Axboe429f6672007-07-23 10:38:43 +0200794 io_u->file = f;
795 get_file(f);
796
797 if (!fill_io_u(td, io_u))
798 break;
799
Jens Axboeb5696bf2009-03-04 16:03:49 +0100800 put_file_log(td, f);
Jens Axboe429f6672007-07-23 10:38:43 +0200801 td_io_close_file(td, f);
Jens Axboeb5696bf2009-03-04 16:03:49 +0100802 io_u->file = NULL;
Jens Axboed6aed792009-06-03 08:41:15 +0200803 fio_file_set_done(f);
Jens Axboe429f6672007-07-23 10:38:43 +0200804 td->nr_done_files++;
Jens Axboe87b10672009-03-04 09:39:47 +0100805 dprint(FD_FILE, "%s: is done (%d of %d)\n", f->file_name, td->nr_done_files, td->o.nr_files);
Jens Axboe429f6672007-07-23 10:38:43 +0200806 } while (1);
807
808 return 0;
809}
810
811
Jens Axboe10ba5352006-10-20 11:39:27 +0200812struct io_u *__get_io_u(struct thread_data *td)
813{
814 struct io_u *io_u = NULL;
815
Jens Axboe01743ee2008-06-02 12:19:19 +0200816 if (!flist_empty(&td->io_u_requeues))
817 io_u = flist_entry(td->io_u_requeues.next, struct io_u, list);
Jens Axboe755200a2007-02-19 13:08:12 +0100818 else if (!queue_full(td)) {
Jens Axboe01743ee2008-06-02 12:19:19 +0200819 io_u = flist_entry(td->io_u_freelist.next, struct io_u, list);
Jens Axboe10ba5352006-10-20 11:39:27 +0200820
Jens Axboe6040dab2006-10-24 19:38:15 +0200821 io_u->buflen = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200822 io_u->resid = 0;
Jens Axboe755200a2007-02-19 13:08:12 +0100823 io_u->file = NULL;
Jens Axboed7762cf2007-02-23 12:34:57 +0100824 io_u->end_io = NULL;
Jens Axboe755200a2007-02-19 13:08:12 +0100825 }
826
827 if (io_u) {
Jens Axboe0c6e7512007-02-22 11:19:39 +0100828 assert(io_u->flags & IO_U_F_FREE);
829 io_u->flags &= ~IO_U_F_FREE;
830
Jens Axboe755200a2007-02-19 13:08:12 +0100831 io_u->error = 0;
Jens Axboe01743ee2008-06-02 12:19:19 +0200832 flist_del(&io_u->list);
833 flist_add(&io_u->list, &td->io_u_busylist);
Jens Axboe10ba5352006-10-20 11:39:27 +0200834 td->cur_depth++;
835 }
836
837 return io_u;
838}
839
840/*
841 * Return an io_u to be processed. Gets a buflen and offset, sets direction,
842 * etc. The returned io_u is fully ready to be prepped and submitted.
843 */
Jens Axboe3d7c3912007-02-19 13:16:12 +0100844struct io_u *get_io_u(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200845{
Jens Axboe3d7c3912007-02-19 13:16:12 +0100846 struct fio_file *f;
Jens Axboe10ba5352006-10-20 11:39:27 +0200847 struct io_u *io_u;
848
849 io_u = __get_io_u(td);
Jens Axboe2ba1c292008-02-01 13:16:38 +0100850 if (!io_u) {
851 dprint(FD_IO, "__get_io_u failed\n");
Jens Axboe10ba5352006-10-20 11:39:27 +0200852 return NULL;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100853 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200854
Jens Axboe755200a2007-02-19 13:08:12 +0100855 /*
856 * from a requeue, io_u already setup
857 */
858 if (io_u->file)
Jens Axboe77f392b2007-02-19 20:13:09 +0100859 goto out;
Jens Axboe755200a2007-02-19 13:08:12 +0100860
Jens Axboe429f6672007-07-23 10:38:43 +0200861 /*
862 * If using an iolog, grab next piece if any available.
863 */
864 if (td->o.read_iolog_file) {
865 if (read_iolog_get(td, io_u))
866 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100867 } else if (set_io_u_file(td, io_u)) {
868 dprint(FD_IO, "io_u %p, setting file failed\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +0200869 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100870 }
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100871
Jens Axboe429f6672007-07-23 10:38:43 +0200872 f = io_u->file;
Jens Axboed6aed792009-06-03 08:41:15 +0200873 assert(fio_file_open(f));
Jens Axboe97af62c2007-05-22 11:12:13 +0200874
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200875 if (io_u->ddir != DDIR_SYNC) {
Jens Axboed0656a92008-02-01 18:33:23 +0100876 if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) {
Jens Axboe2ba1c292008-02-01 13:16:38 +0100877 dprint(FD_IO, "get_io_u: zero buflen on %p\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +0200878 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100879 }
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200880
Jens Axboe36167d82007-02-18 05:41:31 +0100881 f->last_pos = io_u->offset + io_u->buflen;
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200882
Radha Ramachandranc311cd22009-04-28 08:12:56 +0200883 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_WRITE)
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200884 populate_verify_io_u(td, io_u);
Jens Axboee4dad9c2008-05-28 10:53:44 +0200885 else if (td->o.refill_buffers && io_u->ddir == DDIR_WRITE)
886 io_u_fill_buffer(td, io_u, io_u->xfer_buflen);
Jens Axboe10ba5352006-10-20 11:39:27 +0200887 }
888
Jens Axboe165faf12007-02-07 11:30:37 +0100889 /*
890 * Set io data pointers.
891 */
Jens Axboecec6b552007-02-06 20:15:38 +0100892 io_u->xfer_buf = io_u->buf;
893 io_u->xfer_buflen = io_u->buflen;
Jens Axboe5973caf2008-05-21 19:52:35 +0200894
Jens Axboe6ac7a332008-03-01 15:22:32 +0100895out:
Jens Axboe429f6672007-07-23 10:38:43 +0200896 if (!td_io_prep(td, io_u)) {
Jens Axboe993bf482008-11-14 13:04:53 +0100897 if (!td->o.disable_slat)
898 fio_gettime(&io_u->start_time, NULL);
Jens Axboe429f6672007-07-23 10:38:43 +0200899 return io_u;
Jens Axboe36167d82007-02-18 05:41:31 +0100900 }
Jens Axboe429f6672007-07-23 10:38:43 +0200901err_put:
Jens Axboe2ba1c292008-02-01 13:16:38 +0100902 dprint(FD_IO, "get_io_u failed\n");
Jens Axboe429f6672007-07-23 10:38:43 +0200903 put_io_u(td, io_u);
904 return NULL;
Jens Axboe10ba5352006-10-20 11:39:27 +0200905}
906
Jens Axboe54517922007-03-05 10:06:06 +0100907void io_u_log_error(struct thread_data *td, struct io_u *io_u)
908{
909 const char *msg[] = { "read", "write", "sync" };
910
911 log_err("fio: io_u error");
912
913 if (io_u->file)
914 log_err(" on file %s", io_u->file->file_name);
915
916 log_err(": %s\n", strerror(io_u->error));
917
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100918 log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir],
919 io_u->offset, io_u->xfer_buflen);
Jens Axboe54517922007-03-05 10:06:06 +0100920
921 if (!td->error)
922 td_verror(td, io_u->error, "io_u error");
923}
924
Jens Axboe97601022007-02-18 12:47:29 +0100925static void io_completed(struct thread_data *td, struct io_u *io_u,
926 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +0200927{
Jens Axboedbad30b2008-12-05 13:17:16 +0100928 /*
929 * Older gcc's are too dumb to realize that usec is always used
930 * initialized, silence that warning.
931 */
932 unsigned long uninitialized_var(usec);
Jens Axboe10ba5352006-10-20 11:39:27 +0200933
Jens Axboe2ba1c292008-02-01 13:16:38 +0100934 dprint_io_u(io_u, "io complete");
935
Jens Axboe0c6e7512007-02-22 11:19:39 +0100936 assert(io_u->flags & IO_U_F_FLIGHT);
937 io_u->flags &= ~IO_U_F_FLIGHT;
938
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200939 if (io_u->ddir == DDIR_SYNC) {
940 td->last_was_sync = 1;
941 return;
942 }
943
944 td->last_was_sync = 0;
945
Jens Axboe10ba5352006-10-20 11:39:27 +0200946 if (!io_u->error) {
947 unsigned int bytes = io_u->buflen - io_u->resid;
Jens Axboe1e97cce2006-12-05 11:44:16 +0100948 const enum fio_ddir idx = io_u->ddir;
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200949 int ret;
Jens Axboe10ba5352006-10-20 11:39:27 +0200950
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200951 td->io_blocks[idx]++;
952 td->io_bytes[idx] += bytes;
953 td->this_io_bytes[idx] += bytes;
Jens Axboe10ba5352006-10-20 11:39:27 +0200954
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200955 if (ramp_time_over(td)) {
Jens Axboe581e7142009-06-09 12:47:16 +0200956 if (!td->o.disable_clat || !td->o.disable_bw ||
957 __should_check_rate(td, idx))
Jens Axboe9520ebb2008-10-16 21:03:27 +0200958 usec = utime_since(&io_u->issue_time,
959 &icd->time);
Jens Axboe721938a2008-09-10 09:46:16 +0200960
Jens Axboe9520ebb2008-10-16 21:03:27 +0200961 if (!td->o.disable_clat) {
Jens Axboe306ddc92009-05-18 13:08:12 +0200962 add_clat_sample(td, idx, usec, bytes);
Jens Axboe9520ebb2008-10-16 21:03:27 +0200963 io_u_mark_latency(td, usec);
964 }
965 if (!td->o.disable_bw)
Jens Axboe306ddc92009-05-18 13:08:12 +0200966 add_bw_sample(td, idx, bytes, &icd->time);
Jens Axboe581e7142009-06-09 12:47:16 +0200967 if (__should_check_rate(td, idx))
968 td->rate_pending_usleep[idx] += (long) td->rate_usec_cycle[idx] - usec;
969 if (__should_check_rate(td, idx ^ 1))
970 td->rate_pending_usleep[idx ^ 1] -= usec;
Jens Axboe721938a2008-09-10 09:46:16 +0200971 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200972
Jens Axboe660a1cb2007-04-17 15:37:47 +0200973 if (td_write(td) && idx == DDIR_WRITE &&
Shawn Lewis86705792007-11-21 09:35:41 +0100974 td->o.do_verify &&
Jens Axboe41128402007-03-27 08:32:48 +0200975 td->o.verify != VERIFY_NONE)
Jens Axboe10ba5352006-10-20 11:39:27 +0200976 log_io_piece(td, io_u);
977
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200978 icd->bytes_done[idx] += bytes;
Jens Axboe3af6ef32007-02-18 06:57:43 +0100979
Jens Axboed7762cf2007-02-23 12:34:57 +0100980 if (io_u->end_io) {
Jens Axboe36690c92007-03-26 10:23:34 +0200981 ret = io_u->end_io(td, io_u);
Jens Axboe3af6ef32007-02-18 06:57:43 +0100982 if (ret && !icd->error)
983 icd->error = ret;
984 }
Jens Axboe54517922007-03-05 10:06:06 +0100985 } else {
Jens Axboe10ba5352006-10-20 11:39:27 +0200986 icd->error = io_u->error;
Jens Axboe54517922007-03-05 10:06:06 +0100987 io_u_log_error(td, io_u);
988 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200989}
990
Jens Axboe9520ebb2008-10-16 21:03:27 +0200991static void init_icd(struct thread_data *td, struct io_completion_data *icd,
992 int nr)
Jens Axboe36167d82007-02-18 05:41:31 +0100993{
Jens Axboe9520ebb2008-10-16 21:03:27 +0200994 if (!td->o.disable_clat || !td->o.disable_bw)
995 fio_gettime(&icd->time, NULL);
Jens Axboe36167d82007-02-18 05:41:31 +0100996
Jens Axboe3af6ef32007-02-18 06:57:43 +0100997 icd->nr = nr;
998
Jens Axboe36167d82007-02-18 05:41:31 +0100999 icd->error = 0;
1000 icd->bytes_done[0] = icd->bytes_done[1] = 0;
1001}
1002
Jens Axboe97601022007-02-18 12:47:29 +01001003static void ios_completed(struct thread_data *td,
1004 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +02001005{
1006 struct io_u *io_u;
1007 int i;
1008
Jens Axboe10ba5352006-10-20 11:39:27 +02001009 for (i = 0; i < icd->nr; i++) {
1010 io_u = td->io_ops->event(td, i);
1011
1012 io_completed(td, io_u, icd);
1013 put_io_u(td, io_u);
1014 }
1015}
Jens Axboe97601022007-02-18 12:47:29 +01001016
Jens Axboee7e6cfb2007-02-20 10:58:34 +01001017/*
1018 * Complete a single io_u for the sync engines.
1019 */
Jens Axboe581e7142009-06-09 12:47:16 +02001020int io_u_sync_complete(struct thread_data *td, struct io_u *io_u,
1021 unsigned long *bytes)
Jens Axboe97601022007-02-18 12:47:29 +01001022{
1023 struct io_completion_data icd;
1024
Jens Axboe9520ebb2008-10-16 21:03:27 +02001025 init_icd(td, &icd, 1);
Jens Axboe97601022007-02-18 12:47:29 +01001026 io_completed(td, io_u, &icd);
1027 put_io_u(td, io_u);
1028
Jens Axboe581e7142009-06-09 12:47:16 +02001029 if (icd.error) {
1030 td_verror(td, icd.error, "io_u_sync_complete");
1031 return -1;
1032 }
Jens Axboe97601022007-02-18 12:47:29 +01001033
Jens Axboe581e7142009-06-09 12:47:16 +02001034 if (bytes) {
1035 bytes[0] += icd.bytes_done[0];
1036 bytes[1] += icd.bytes_done[1];
1037 }
1038
1039 return 0;
Jens Axboe97601022007-02-18 12:47:29 +01001040}
1041
Jens Axboee7e6cfb2007-02-20 10:58:34 +01001042/*
1043 * Called to complete min_events number of io for the async engines.
1044 */
Jens Axboe581e7142009-06-09 12:47:16 +02001045int io_u_queued_complete(struct thread_data *td, int min_evts,
1046 unsigned long *bytes)
Jens Axboe97601022007-02-18 12:47:29 +01001047{
Jens Axboe97601022007-02-18 12:47:29 +01001048 struct io_completion_data icd;
Jens Axboe00de55e2007-02-20 10:45:57 +01001049 struct timespec *tvp = NULL;
Jens Axboe97601022007-02-18 12:47:29 +01001050 int ret;
Davide Libenzi4d06a332007-03-22 07:43:50 +01001051 struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, };
Jens Axboe97601022007-02-18 12:47:29 +01001052
Jens Axboe49504212008-06-05 09:03:30 +02001053 dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts);
Jens Axboeb271fe62008-02-04 10:49:41 +01001054
Jens Axboe49504212008-06-05 09:03:30 +02001055 if (!min_evts)
Jens Axboe00de55e2007-02-20 10:45:57 +01001056 tvp = &ts;
Jens Axboe97601022007-02-18 12:47:29 +01001057
Jens Axboe49504212008-06-05 09:03:30 +02001058 ret = td_io_getevents(td, min_evts, td->o.iodepth_batch_complete, tvp);
Jens Axboe97601022007-02-18 12:47:29 +01001059 if (ret < 0) {
Jens Axboee1161c32007-02-22 19:36:48 +01001060 td_verror(td, -ret, "td_io_getevents");
Jens Axboe97601022007-02-18 12:47:29 +01001061 return ret;
1062 } else if (!ret)
1063 return ret;
1064
Jens Axboe9520ebb2008-10-16 21:03:27 +02001065 init_icd(td, &icd, ret);
Jens Axboe97601022007-02-18 12:47:29 +01001066 ios_completed(td, &icd);
Jens Axboe581e7142009-06-09 12:47:16 +02001067 if (icd.error) {
1068 td_verror(td, icd.error, "io_u_queued_complete");
1069 return -1;
1070 }
Jens Axboe97601022007-02-18 12:47:29 +01001071
Jens Axboe581e7142009-06-09 12:47:16 +02001072 if (bytes) {
1073 bytes[0] += icd.bytes_done[0];
1074 bytes[1] += icd.bytes_done[1];
1075 }
1076
1077 return 0;
Jens Axboe97601022007-02-18 12:47:29 +01001078}
Jens Axboe7e77dd02007-02-20 10:57:34 +01001079
1080/*
1081 * Call when io_u is really queued, to update the submission latency.
1082 */
1083void io_u_queued(struct thread_data *td, struct io_u *io_u)
1084{
Jens Axboe9520ebb2008-10-16 21:03:27 +02001085 if (!td->o.disable_slat) {
1086 unsigned long slat_time;
Jens Axboe7e77dd02007-02-20 10:57:34 +01001087
Jens Axboe9520ebb2008-10-16 21:03:27 +02001088 slat_time = utime_since(&io_u->start_time, &io_u->issue_time);
Jens Axboe306ddc92009-05-18 13:08:12 +02001089 add_slat_sample(td, io_u->ddir, io_u->xfer_buflen, slat_time);
Jens Axboe9520ebb2008-10-16 21:03:27 +02001090 }
Jens Axboe7e77dd02007-02-20 10:57:34 +01001091}
Jens Axboe433afcb2007-02-22 10:39:01 +01001092
Jens Axboe5973caf2008-05-21 19:52:35 +02001093/*
1094 * "randomly" fill the buffer contents
1095 */
1096void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u,
1097 unsigned int max_bs)
1098{
1099 long *ptr = io_u->buf;
1100
1101 if (!td->o.zero_buffers) {
1102 while ((void *) ptr - io_u->buf < max_bs) {
1103 *ptr = rand() * GOLDEN_RATIO_PRIME;
1104 ptr++;
1105 }
1106 } else
1107 memset(ptr, 0, max_bs);
1108}