blob: 40fd1968eb08b4a9e8d1bcd6108ab7b6f780d1fe [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 Axboe10ba5352006-10-20 11:39:27 +0200310/*
311 * Return the data direction for the next io_u. If the job is a
312 * mixed read/write workload, check the rwmix cycle and switch if
313 * necessary.
314 */
Jens Axboe1e97cce2006-12-05 11:44:16 +0100315static enum fio_ddir get_rw_ddir(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200316{
317 if (td_rw(td)) {
Jens Axboe10ba5352006-10-20 11:39:27 +0200318 /*
319 * Check if it's time to seed a new data direction.
320 */
Jens Axboee4928662008-04-07 09:19:46 +0200321 if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) {
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100322 enum fio_ddir ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200323
Jens Axboee47f7992007-03-21 14:05:39 +0100324 /*
325 * Put a top limit on how many bytes we do for
326 * one data direction, to avoid overflowing the
327 * ranges too much
328 */
329 ddir = get_rand_ddir(td);
Jens Axboee47f7992007-03-21 14:05:39 +0100330
331 if (ddir != td->rwmix_ddir)
332 set_rwmix_bytes(td);
333
334 td->rwmix_ddir = ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200335 }
336 return td->rwmix_ddir;
337 } else if (td_read(td))
338 return DDIR_READ;
339 else
340 return DDIR_WRITE;
341}
342
Jens Axboe60f2c652008-05-16 12:31:36 +0200343static void put_file_log(struct thread_data *td, struct fio_file *f)
344{
345 int ret = put_file(td, f);
346
347 if (ret)
348 td_verror(td, ret, "file close");
349}
350
Jens Axboe10ba5352006-10-20 11:39:27 +0200351void put_io_u(struct thread_data *td, struct io_u *io_u)
352{
Jens Axboe0c6e7512007-02-22 11:19:39 +0100353 assert((io_u->flags & IO_U_F_FREE) == 0);
354 io_u->flags |= IO_U_F_FREE;
355
Jens Axboe60f2c652008-05-16 12:31:36 +0200356 if (io_u->file)
357 put_file_log(td, io_u->file);
Jens Axboe2dbdab72007-04-26 10:21:15 +0200358
Jens Axboe10ba5352006-10-20 11:39:27 +0200359 io_u->file = NULL;
Jens Axboe01743ee2008-06-02 12:19:19 +0200360 flist_del(&io_u->list);
361 flist_add(&io_u->list, &td->io_u_freelist);
Jens Axboe10ba5352006-10-20 11:39:27 +0200362 td->cur_depth--;
363}
364
Jens Axboe755200a2007-02-19 13:08:12 +0100365void requeue_io_u(struct thread_data *td, struct io_u **io_u)
366{
367 struct io_u *__io_u = *io_u;
368
Jens Axboe465221b2008-05-30 22:07:49 +0200369 dprint(FD_IO, "requeue %p\n", __io_u);
370
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100371 __io_u->flags |= IO_U_F_FREE;
Jens Axboee4f54ad2008-02-04 10:56:07 +0100372 if ((__io_u->flags & IO_U_F_FLIGHT) && (__io_u->ddir != DDIR_SYNC))
373 td->io_issues[__io_u->ddir]--;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100374
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100375 __io_u->flags &= ~IO_U_F_FLIGHT;
376
Jens Axboe01743ee2008-06-02 12:19:19 +0200377 flist_del(&__io_u->list);
378 flist_add_tail(&__io_u->list, &td->io_u_requeues);
Jens Axboe755200a2007-02-19 13:08:12 +0100379 td->cur_depth--;
380 *io_u = NULL;
381}
382
Jens Axboe9bf20612007-03-01 09:33:57 +0100383static int fill_io_u(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200384{
Jens Axboeb4c5e1a2007-10-25 18:44:45 +0200385 if (td->io_ops->flags & FIO_NOIO)
386 goto out;
387
Jens Axboe10ba5352006-10-20 11:39:27 +0200388 /*
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200389 * see if it's time to sync
390 */
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100391 if (td->o.fsync_blocks &&
392 !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) &&
393 td->io_issues[DDIR_WRITE] && should_fsync(td)) {
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200394 io_u->ddir = DDIR_SYNC;
Jens Axboec38e9462007-03-27 08:48:48 +0200395 goto out;
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200396 }
397
Jens Axboea00735e2006-11-03 08:58:08 +0100398 io_u->ddir = get_rw_ddir(td);
399
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200400 /*
Jens Axboe48f5abd2007-07-20 13:25:04 +0200401 * See if it's time to switch to a new zone
402 */
403 if (td->zone_bytes >= td->o.zone_size) {
404 td->zone_bytes = 0;
405 io_u->file->last_pos += td->o.zone_skip;
406 td->io_skip_bytes += td->o.zone_skip;
407 }
408
409 /*
Jens Axboec685b5b2007-02-10 20:02:28 +0100410 * No log, let the seq/rand engine retrieve the next buflen and
411 * position.
Jens Axboe10ba5352006-10-20 11:39:27 +0200412 */
Jens Axboe2ba1c292008-02-01 13:16:38 +0100413 if (get_next_offset(td, io_u)) {
414 dprint(FD_IO, "io_u %p, failed getting offset\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100415 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100416 }
Jens Axboec685b5b2007-02-10 20:02:28 +0100417
Jens Axboe9bf20612007-03-01 09:33:57 +0100418 io_u->buflen = get_next_buflen(td, io_u);
Jens Axboe2ba1c292008-02-01 13:16:38 +0100419 if (!io_u->buflen) {
420 dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100421 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100422 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200423
Jens Axboe2ba1c292008-02-01 13:16:38 +0100424 if (io_u->offset + io_u->buflen > io_u->file->real_file_size) {
425 dprint(FD_IO, "io_u %p, offset too large\n", io_u);
Jens Axboe4ba66132008-02-05 10:05:50 +0100426 dprint(FD_IO, " off=%llu/%lu > %llu\n", io_u->offset,
427 io_u->buflen, io_u->file->real_file_size);
Jens Axboe6a5e6882007-07-26 10:47:51 +0200428 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100429 }
Jens Axboe6a5e6882007-07-26 10:47:51 +0200430
Jens Axboebca4ed42007-02-12 05:13:23 +0100431 /*
432 * mark entry before potentially trimming io_u
433 */
Jens Axboe303032a2008-03-26 10:11:10 +0100434 if (td_random(td) && file_randommap(td, io_u->file))
Jens Axboe9bf20612007-03-01 09:33:57 +0100435 mark_random_map(td, io_u);
Jens Axboe10ba5352006-10-20 11:39:27 +0200436
Jens Axboebca4ed42007-02-12 05:13:23 +0100437 /*
438 * If using a write iolog, store this entry.
439 */
Jens Axboec38e9462007-03-27 08:48:48 +0200440out:
Jens Axboe2ba1c292008-02-01 13:16:38 +0100441 dprint_io_u(io_u, "fill_io_u");
Jens Axboed9d91e32008-01-31 13:25:42 +0100442 td->zone_bytes += io_u->buflen;
Jens Axboef29b25a2007-07-23 08:56:43 +0200443 log_io_u(td, io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100444 return 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200445}
446
Jens Axboe838bc702008-05-22 13:08:23 +0200447static void __io_u_mark_map(unsigned int *map, unsigned int nr)
448{
449 int index = 0;
450
451 switch (nr) {
452 default:
453 index = 6;
454 break;
455 case 33 ... 64:
456 index = 5;
457 break;
458 case 17 ... 32:
459 index = 4;
460 break;
461 case 9 ... 16:
462 index = 3;
463 break;
464 case 5 ... 8:
465 index = 2;
466 break;
467 case 1 ... 4:
468 index = 1;
469 case 0:
470 break;
471 }
472
473 map[index]++;
474}
475
476void io_u_mark_submit(struct thread_data *td, unsigned int nr)
477{
478 __io_u_mark_map(td->ts.io_u_submit, nr);
479 td->ts.total_submit++;
480}
481
482void io_u_mark_complete(struct thread_data *td, unsigned int nr)
483{
484 __io_u_mark_map(td->ts.io_u_complete, nr);
485 td->ts.total_complete++;
486}
487
Jens Axboed8005752008-05-15 09:49:09 +0200488void io_u_mark_depth(struct thread_data *td, unsigned int nr)
Jens Axboe71619dc2007-01-13 23:56:33 +0100489{
490 int index = 0;
491
492 switch (td->cur_depth) {
493 default:
Jens Axboea783e612007-06-19 09:50:28 +0200494 index = 6;
495 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100496 case 32 ... 63:
Jens Axboea783e612007-06-19 09:50:28 +0200497 index = 5;
498 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100499 case 16 ... 31:
Jens Axboea783e612007-06-19 09:50:28 +0200500 index = 4;
501 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100502 case 8 ... 15:
Jens Axboea783e612007-06-19 09:50:28 +0200503 index = 3;
504 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100505 case 4 ... 7:
Jens Axboea783e612007-06-19 09:50:28 +0200506 index = 2;
507 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100508 case 2 ... 3:
Jens Axboea783e612007-06-19 09:50:28 +0200509 index = 1;
Jens Axboe71619dc2007-01-13 23:56:33 +0100510 case 1:
511 break;
512 }
513
Jens Axboe3bec7ae2008-05-14 21:08:37 +0200514 td->ts.io_u_map[index] += nr;
Jens Axboe71619dc2007-01-13 23:56:33 +0100515}
516
Jens Axboe04a0fea2007-06-19 12:48:41 +0200517static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec)
518{
519 int index = 0;
520
521 assert(usec < 1000);
522
523 switch (usec) {
524 case 750 ... 999:
525 index = 9;
526 break;
527 case 500 ... 749:
528 index = 8;
529 break;
530 case 250 ... 499:
531 index = 7;
532 break;
533 case 100 ... 249:
534 index = 6;
535 break;
536 case 50 ... 99:
537 index = 5;
538 break;
539 case 20 ... 49:
540 index = 4;
541 break;
542 case 10 ... 19:
543 index = 3;
544 break;
545 case 4 ... 9:
546 index = 2;
547 break;
548 case 2 ... 3:
549 index = 1;
550 case 0 ... 1:
551 break;
552 }
553
554 assert(index < FIO_IO_U_LAT_U_NR);
555 td->ts.io_u_lat_u[index]++;
556}
557
558static void io_u_mark_lat_msec(struct thread_data *td, unsigned long msec)
Jens Axboeec118302007-02-17 04:38:20 +0100559{
560 int index = 0;
561
562 switch (msec) {
563 default:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200564 index = 11;
565 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100566 case 1000 ... 1999:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200567 index = 10;
568 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100569 case 750 ... 999:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200570 index = 9;
571 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100572 case 500 ... 749:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200573 index = 8;
574 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100575 case 250 ... 499:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200576 index = 7;
577 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100578 case 100 ... 249:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200579 index = 6;
580 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100581 case 50 ... 99:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200582 index = 5;
583 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100584 case 20 ... 49:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200585 index = 4;
586 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100587 case 10 ... 19:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200588 index = 3;
589 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100590 case 4 ... 9:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200591 index = 2;
592 break;
Jens Axboeec118302007-02-17 04:38:20 +0100593 case 2 ... 3:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200594 index = 1;
Jens Axboeec118302007-02-17 04:38:20 +0100595 case 0 ... 1:
596 break;
597 }
598
Jens Axboe04a0fea2007-06-19 12:48:41 +0200599 assert(index < FIO_IO_U_LAT_M_NR);
600 td->ts.io_u_lat_m[index]++;
601}
602
603static void io_u_mark_latency(struct thread_data *td, unsigned long usec)
604{
605 if (usec < 1000)
606 io_u_mark_lat_usec(td, usec);
607 else
608 io_u_mark_lat_msec(td, usec / 1000);
Jens Axboeec118302007-02-17 04:38:20 +0100609}
610
Jens Axboe0aabe162007-02-23 08:45:55 +0100611/*
612 * Get next file to service by choosing one at random
613 */
Jens Axboed6aed792009-06-03 08:41:15 +0200614static struct fio_file *get_next_file_rand(struct thread_data *td, enum fio_file_flags goodf,
615 enum fio_file_flags badf)
Jens Axboe0aabe162007-02-23 08:45:55 +0100616{
Jens Axboe0aabe162007-02-23 08:45:55 +0100617 struct fio_file *f;
Jens Axboe1c178182007-03-13 13:25:18 +0100618 int fno;
Jens Axboe0aabe162007-02-23 08:45:55 +0100619
620 do {
Jens Axboe7c83c082007-03-01 10:04:15 +0100621 long r = os_random_long(&td->next_file_state);
Jens Axboe87b10672009-03-04 09:39:47 +0100622 int opened = 0;
Jens Axboe7c83c082007-03-01 10:04:15 +0100623
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100624 fno = (unsigned int) ((double) td->o.nr_files
Jens Axboedc873b62008-06-04 20:13:04 +0200625 * (r / (OS_RAND_MAX + 1.0)));
Jens Axboe126d65c2008-03-01 18:04:31 +0100626 f = td->files[fno];
Jens Axboed6aed792009-06-03 08:41:15 +0200627 if (fio_file_done(f))
Jens Axboe059e63c2007-03-27 20:34:47 +0200628 continue;
Jens Axboe1c178182007-03-13 13:25:18 +0100629
Jens Axboed6aed792009-06-03 08:41:15 +0200630 if (!fio_file_open(f)) {
Jens Axboe87b10672009-03-04 09:39:47 +0100631 int err;
632
633 err = td_io_open_file(td, f);
634 if (err)
635 continue;
636 opened = 1;
637 }
638
Jens Axboe2ba1c292008-02-01 13:16:38 +0100639 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) {
640 dprint(FD_FILE, "get_next_file_rand: %p\n", f);
Jens Axboe0aabe162007-02-23 08:45:55 +0100641 return f;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100642 }
Jens Axboe87b10672009-03-04 09:39:47 +0100643 if (opened)
644 td_io_close_file(td, f);
Jens Axboe0aabe162007-02-23 08:45:55 +0100645 } while (1);
646}
647
648/*
649 * Get next file to service by doing round robin between all available ones
650 */
Jens Axboe1c178182007-03-13 13:25:18 +0100651static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf,
652 int badf)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100653{
654 unsigned int old_next_file = td->next_file;
655 struct fio_file *f;
656
657 do {
Jens Axboe87b10672009-03-04 09:39:47 +0100658 int opened = 0;
659
Jens Axboe126d65c2008-03-01 18:04:31 +0100660 f = td->files[td->next_file];
Jens Axboe3d7c3912007-02-19 13:16:12 +0100661
662 td->next_file++;
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100663 if (td->next_file >= td->o.nr_files)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100664 td->next_file = 0;
665
Jens Axboe87b10672009-03-04 09:39:47 +0100666 dprint(FD_FILE, "trying file %s %x\n", f->file_name, f->flags);
Jens Axboed6aed792009-06-03 08:41:15 +0200667 if (fio_file_done(f)) {
Jens Axboed5ed68e2007-03-28 09:33:43 +0200668 f = NULL;
Jens Axboe059e63c2007-03-27 20:34:47 +0200669 continue;
Jens Axboed5ed68e2007-03-28 09:33:43 +0200670 }
Jens Axboe059e63c2007-03-27 20:34:47 +0200671
Jens Axboed6aed792009-06-03 08:41:15 +0200672 if (!fio_file_open(f)) {
Jens Axboe87b10672009-03-04 09:39:47 +0100673 int err;
674
675 err = td_io_open_file(td, f);
Jens Axboeb5696bf2009-03-04 16:03:49 +0100676 if (err) {
677 dprint(FD_FILE, "error %d on open of %s\n",
678 err, f->file_name);
Jens Axboe87c27b42009-05-20 10:45:12 +0200679 f = NULL;
Jens Axboe87b10672009-03-04 09:39:47 +0100680 continue;
Jens Axboeb5696bf2009-03-04 16:03:49 +0100681 }
Jens Axboe87b10672009-03-04 09:39:47 +0100682 opened = 1;
683 }
684
Jens Axboeb5696bf2009-03-04 16:03:49 +0100685 dprint(FD_FILE, "goodf=%x, badf=%x, ff=%x\n", goodf, badf, f->flags);
Jens Axboe1c178182007-03-13 13:25:18 +0100686 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
Jens Axboe3d7c3912007-02-19 13:16:12 +0100687 break;
688
Jens Axboe87b10672009-03-04 09:39:47 +0100689 if (opened)
690 td_io_close_file(td, f);
691
Jens Axboe3d7c3912007-02-19 13:16:12 +0100692 f = NULL;
693 } while (td->next_file != old_next_file);
694
Jens Axboe2ba1c292008-02-01 13:16:38 +0100695 dprint(FD_FILE, "get_next_file_rr: %p\n", f);
Jens Axboe3d7c3912007-02-19 13:16:12 +0100696 return f;
697}
698
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100699static struct fio_file *get_next_file(struct thread_data *td)
700{
Jens Axboe1907dbc2007-03-12 11:44:28 +0100701 struct fio_file *f;
702
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100703 assert(td->o.nr_files <= td->files_index);
Jens Axboe1c178182007-03-13 13:25:18 +0100704
Jens Axboeb5696bf2009-03-04 16:03:49 +0100705 if (td->nr_done_files >= td->o.nr_files) {
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100706 dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d,"
707 " nr_files=%d\n", td->nr_open_files,
708 td->nr_done_files,
709 td->o.nr_files);
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100710 return NULL;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100711 }
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100712
Jens Axboe1907dbc2007-03-12 11:44:28 +0100713 f = td->file_service_file;
Jens Axboed6aed792009-06-03 08:41:15 +0200714 if (f && fio_file_open(f) && !fio_file_closing(f)) {
Jens Axboea086c252009-03-04 08:27:37 +0100715 if (td->o.file_service_type == FIO_FSERVICE_SEQ)
716 goto out;
717 if (td->file_service_left--)
718 goto out;
719 }
Jens Axboe1907dbc2007-03-12 11:44:28 +0100720
Jens Axboea086c252009-03-04 08:27:37 +0100721 if (td->o.file_service_type == FIO_FSERVICE_RR ||
722 td->o.file_service_type == FIO_FSERVICE_SEQ)
Jens Axboed6aed792009-06-03 08:41:15 +0200723 f = get_next_file_rr(td, FIO_FILE_open, FIO_FILE_closing);
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100724 else
Jens Axboed6aed792009-06-03 08:41:15 +0200725 f = get_next_file_rand(td, FIO_FILE_open, FIO_FILE_closing);
Jens Axboe1907dbc2007-03-12 11:44:28 +0100726
727 td->file_service_file = f;
728 td->file_service_left = td->file_service_nr - 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100729out:
Jens Axboe683023e2009-03-04 08:41:31 +0100730 dprint(FD_FILE, "get_next_file: %p [%s]\n", f, f->file_name);
Jens Axboe1907dbc2007-03-12 11:44:28 +0100731 return f;
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100732}
733
Jens Axboe429f6672007-07-23 10:38:43 +0200734static int set_io_u_file(struct thread_data *td, struct io_u *io_u)
735{
736 struct fio_file *f;
737
738 do {
739 f = get_next_file(td);
740 if (!f)
741 return 1;
742
Jens Axboe429f6672007-07-23 10:38:43 +0200743 io_u->file = f;
744 get_file(f);
745
746 if (!fill_io_u(td, io_u))
747 break;
748
Jens Axboeb5696bf2009-03-04 16:03:49 +0100749 put_file_log(td, f);
Jens Axboe429f6672007-07-23 10:38:43 +0200750 td_io_close_file(td, f);
Jens Axboeb5696bf2009-03-04 16:03:49 +0100751 io_u->file = NULL;
Jens Axboed6aed792009-06-03 08:41:15 +0200752 fio_file_set_done(f);
Jens Axboe429f6672007-07-23 10:38:43 +0200753 td->nr_done_files++;
Jens Axboe87b10672009-03-04 09:39:47 +0100754 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 +0200755 } while (1);
756
757 return 0;
758}
759
760
Jens Axboe10ba5352006-10-20 11:39:27 +0200761struct io_u *__get_io_u(struct thread_data *td)
762{
763 struct io_u *io_u = NULL;
764
Jens Axboe01743ee2008-06-02 12:19:19 +0200765 if (!flist_empty(&td->io_u_requeues))
766 io_u = flist_entry(td->io_u_requeues.next, struct io_u, list);
Jens Axboe755200a2007-02-19 13:08:12 +0100767 else if (!queue_full(td)) {
Jens Axboe01743ee2008-06-02 12:19:19 +0200768 io_u = flist_entry(td->io_u_freelist.next, struct io_u, list);
Jens Axboe10ba5352006-10-20 11:39:27 +0200769
Jens Axboe6040dab2006-10-24 19:38:15 +0200770 io_u->buflen = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200771 io_u->resid = 0;
Jens Axboe755200a2007-02-19 13:08:12 +0100772 io_u->file = NULL;
Jens Axboed7762cf2007-02-23 12:34:57 +0100773 io_u->end_io = NULL;
Jens Axboe755200a2007-02-19 13:08:12 +0100774 }
775
776 if (io_u) {
Jens Axboe0c6e7512007-02-22 11:19:39 +0100777 assert(io_u->flags & IO_U_F_FREE);
778 io_u->flags &= ~IO_U_F_FREE;
779
Jens Axboe755200a2007-02-19 13:08:12 +0100780 io_u->error = 0;
Jens Axboe01743ee2008-06-02 12:19:19 +0200781 flist_del(&io_u->list);
782 flist_add(&io_u->list, &td->io_u_busylist);
Jens Axboe10ba5352006-10-20 11:39:27 +0200783 td->cur_depth++;
784 }
785
786 return io_u;
787}
788
789/*
790 * Return an io_u to be processed. Gets a buflen and offset, sets direction,
791 * etc. The returned io_u is fully ready to be prepped and submitted.
792 */
Jens Axboe3d7c3912007-02-19 13:16:12 +0100793struct io_u *get_io_u(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200794{
Jens Axboe3d7c3912007-02-19 13:16:12 +0100795 struct fio_file *f;
Jens Axboe10ba5352006-10-20 11:39:27 +0200796 struct io_u *io_u;
797
798 io_u = __get_io_u(td);
Jens Axboe2ba1c292008-02-01 13:16:38 +0100799 if (!io_u) {
800 dprint(FD_IO, "__get_io_u failed\n");
Jens Axboe10ba5352006-10-20 11:39:27 +0200801 return NULL;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100802 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200803
Jens Axboe755200a2007-02-19 13:08:12 +0100804 /*
805 * from a requeue, io_u already setup
806 */
807 if (io_u->file)
Jens Axboe77f392b2007-02-19 20:13:09 +0100808 goto out;
Jens Axboe755200a2007-02-19 13:08:12 +0100809
Jens Axboe429f6672007-07-23 10:38:43 +0200810 /*
811 * If using an iolog, grab next piece if any available.
812 */
813 if (td->o.read_iolog_file) {
814 if (read_iolog_get(td, io_u))
815 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100816 } else if (set_io_u_file(td, io_u)) {
817 dprint(FD_IO, "io_u %p, setting file failed\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +0200818 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100819 }
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100820
Jens Axboe429f6672007-07-23 10:38:43 +0200821 f = io_u->file;
Jens Axboed6aed792009-06-03 08:41:15 +0200822 assert(fio_file_open(f));
Jens Axboe97af62c2007-05-22 11:12:13 +0200823
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200824 if (io_u->ddir != DDIR_SYNC) {
Jens Axboed0656a92008-02-01 18:33:23 +0100825 if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) {
Jens Axboe2ba1c292008-02-01 13:16:38 +0100826 dprint(FD_IO, "get_io_u: zero buflen on %p\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +0200827 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100828 }
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200829
Jens Axboe36167d82007-02-18 05:41:31 +0100830 f->last_pos = io_u->offset + io_u->buflen;
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200831
Radha Ramachandranc311cd22009-04-28 08:12:56 +0200832 if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_WRITE)
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200833 populate_verify_io_u(td, io_u);
Jens Axboee4dad9c2008-05-28 10:53:44 +0200834 else if (td->o.refill_buffers && io_u->ddir == DDIR_WRITE)
835 io_u_fill_buffer(td, io_u, io_u->xfer_buflen);
Jens Axboe10ba5352006-10-20 11:39:27 +0200836 }
837
Jens Axboe165faf12007-02-07 11:30:37 +0100838 /*
839 * Set io data pointers.
840 */
Jens Axboecec6b552007-02-06 20:15:38 +0100841 io_u->xfer_buf = io_u->buf;
842 io_u->xfer_buflen = io_u->buflen;
Jens Axboe5973caf2008-05-21 19:52:35 +0200843
Jens Axboe6ac7a332008-03-01 15:22:32 +0100844out:
Jens Axboe429f6672007-07-23 10:38:43 +0200845 if (!td_io_prep(td, io_u)) {
Jens Axboe993bf482008-11-14 13:04:53 +0100846 if (!td->o.disable_slat)
847 fio_gettime(&io_u->start_time, NULL);
Jens Axboe429f6672007-07-23 10:38:43 +0200848 return io_u;
Jens Axboe36167d82007-02-18 05:41:31 +0100849 }
Jens Axboe429f6672007-07-23 10:38:43 +0200850err_put:
Jens Axboe2ba1c292008-02-01 13:16:38 +0100851 dprint(FD_IO, "get_io_u failed\n");
Jens Axboe429f6672007-07-23 10:38:43 +0200852 put_io_u(td, io_u);
853 return NULL;
Jens Axboe10ba5352006-10-20 11:39:27 +0200854}
855
Jens Axboe54517922007-03-05 10:06:06 +0100856void io_u_log_error(struct thread_data *td, struct io_u *io_u)
857{
858 const char *msg[] = { "read", "write", "sync" };
859
860 log_err("fio: io_u error");
861
862 if (io_u->file)
863 log_err(" on file %s", io_u->file->file_name);
864
865 log_err(": %s\n", strerror(io_u->error));
866
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100867 log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir],
868 io_u->offset, io_u->xfer_buflen);
Jens Axboe54517922007-03-05 10:06:06 +0100869
870 if (!td->error)
871 td_verror(td, io_u->error, "io_u error");
872}
873
Jens Axboe97601022007-02-18 12:47:29 +0100874static void io_completed(struct thread_data *td, struct io_u *io_u,
875 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +0200876{
Jens Axboedbad30b2008-12-05 13:17:16 +0100877 /*
878 * Older gcc's are too dumb to realize that usec is always used
879 * initialized, silence that warning.
880 */
881 unsigned long uninitialized_var(usec);
Jens Axboe10ba5352006-10-20 11:39:27 +0200882
Jens Axboe2ba1c292008-02-01 13:16:38 +0100883 dprint_io_u(io_u, "io complete");
884
Jens Axboe0c6e7512007-02-22 11:19:39 +0100885 assert(io_u->flags & IO_U_F_FLIGHT);
886 io_u->flags &= ~IO_U_F_FLIGHT;
887
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200888 if (io_u->ddir == DDIR_SYNC) {
889 td->last_was_sync = 1;
890 return;
891 }
892
893 td->last_was_sync = 0;
894
Jens Axboe10ba5352006-10-20 11:39:27 +0200895 if (!io_u->error) {
896 unsigned int bytes = io_u->buflen - io_u->resid;
Jens Axboe1e97cce2006-12-05 11:44:16 +0100897 const enum fio_ddir idx = io_u->ddir;
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200898 int ret;
Jens Axboe10ba5352006-10-20 11:39:27 +0200899
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200900 td->io_blocks[idx]++;
901 td->io_bytes[idx] += bytes;
902 td->this_io_bytes[idx] += bytes;
Jens Axboe10ba5352006-10-20 11:39:27 +0200903
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200904 if (ramp_time_over(td)) {
Jens Axboe9520ebb2008-10-16 21:03:27 +0200905 if (!td->o.disable_clat || !td->o.disable_bw)
906 usec = utime_since(&io_u->issue_time,
907 &icd->time);
Jens Axboe721938a2008-09-10 09:46:16 +0200908
Jens Axboe9520ebb2008-10-16 21:03:27 +0200909 if (!td->o.disable_clat) {
Jens Axboe306ddc92009-05-18 13:08:12 +0200910 add_clat_sample(td, idx, usec, bytes);
Jens Axboe9520ebb2008-10-16 21:03:27 +0200911 io_u_mark_latency(td, usec);
912 }
913 if (!td->o.disable_bw)
Jens Axboe306ddc92009-05-18 13:08:12 +0200914 add_bw_sample(td, idx, bytes, &icd->time);
Jens Axboe721938a2008-09-10 09:46:16 +0200915 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200916
Jens Axboe660a1cb2007-04-17 15:37:47 +0200917 if (td_write(td) && idx == DDIR_WRITE &&
Shawn Lewis86705792007-11-21 09:35:41 +0100918 td->o.do_verify &&
Jens Axboe41128402007-03-27 08:32:48 +0200919 td->o.verify != VERIFY_NONE)
Jens Axboe10ba5352006-10-20 11:39:27 +0200920 log_io_piece(td, io_u);
921
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200922 icd->bytes_done[idx] += bytes;
Jens Axboe3af6ef32007-02-18 06:57:43 +0100923
Jens Axboed7762cf2007-02-23 12:34:57 +0100924 if (io_u->end_io) {
Jens Axboe36690c92007-03-26 10:23:34 +0200925 ret = io_u->end_io(td, io_u);
Jens Axboe3af6ef32007-02-18 06:57:43 +0100926 if (ret && !icd->error)
927 icd->error = ret;
928 }
Jens Axboe54517922007-03-05 10:06:06 +0100929 } else {
Jens Axboe10ba5352006-10-20 11:39:27 +0200930 icd->error = io_u->error;
Jens Axboe54517922007-03-05 10:06:06 +0100931 io_u_log_error(td, io_u);
932 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200933}
934
Jens Axboe9520ebb2008-10-16 21:03:27 +0200935static void init_icd(struct thread_data *td, struct io_completion_data *icd,
936 int nr)
Jens Axboe36167d82007-02-18 05:41:31 +0100937{
Jens Axboe9520ebb2008-10-16 21:03:27 +0200938 if (!td->o.disable_clat || !td->o.disable_bw)
939 fio_gettime(&icd->time, NULL);
Jens Axboe36167d82007-02-18 05:41:31 +0100940
Jens Axboe3af6ef32007-02-18 06:57:43 +0100941 icd->nr = nr;
942
Jens Axboe36167d82007-02-18 05:41:31 +0100943 icd->error = 0;
944 icd->bytes_done[0] = icd->bytes_done[1] = 0;
945}
946
Jens Axboe97601022007-02-18 12:47:29 +0100947static void ios_completed(struct thread_data *td,
948 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +0200949{
950 struct io_u *io_u;
951 int i;
952
Jens Axboe10ba5352006-10-20 11:39:27 +0200953 for (i = 0; i < icd->nr; i++) {
954 io_u = td->io_ops->event(td, i);
955
956 io_completed(td, io_u, icd);
957 put_io_u(td, io_u);
958 }
959}
Jens Axboe97601022007-02-18 12:47:29 +0100960
Jens Axboee7e6cfb2007-02-20 10:58:34 +0100961/*
962 * Complete a single io_u for the sync engines.
963 */
Jens Axboed7762cf2007-02-23 12:34:57 +0100964long io_u_sync_complete(struct thread_data *td, struct io_u *io_u)
Jens Axboe97601022007-02-18 12:47:29 +0100965{
966 struct io_completion_data icd;
967
Jens Axboe9520ebb2008-10-16 21:03:27 +0200968 init_icd(td, &icd, 1);
Jens Axboe97601022007-02-18 12:47:29 +0100969 io_completed(td, io_u, &icd);
970 put_io_u(td, io_u);
971
972 if (!icd.error)
973 return icd.bytes_done[0] + icd.bytes_done[1];
974
Jens Axboe37e974a2007-03-02 15:16:45 +0100975 td_verror(td, icd.error, "io_u_sync_complete");
Jens Axboe97601022007-02-18 12:47:29 +0100976 return -1;
977}
978
Jens Axboee7e6cfb2007-02-20 10:58:34 +0100979/*
980 * Called to complete min_events number of io for the async engines.
981 */
Jens Axboe49504212008-06-05 09:03:30 +0200982long io_u_queued_complete(struct thread_data *td, int min_evts)
Jens Axboe97601022007-02-18 12:47:29 +0100983{
Jens Axboe97601022007-02-18 12:47:29 +0100984 struct io_completion_data icd;
Jens Axboe00de55e2007-02-20 10:45:57 +0100985 struct timespec *tvp = NULL;
Jens Axboe97601022007-02-18 12:47:29 +0100986 int ret;
Davide Libenzi4d06a332007-03-22 07:43:50 +0100987 struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, };
Jens Axboe97601022007-02-18 12:47:29 +0100988
Jens Axboe49504212008-06-05 09:03:30 +0200989 dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts);
Jens Axboeb271fe62008-02-04 10:49:41 +0100990
Jens Axboe49504212008-06-05 09:03:30 +0200991 if (!min_evts)
Jens Axboe00de55e2007-02-20 10:45:57 +0100992 tvp = &ts;
Jens Axboe97601022007-02-18 12:47:29 +0100993
Jens Axboe49504212008-06-05 09:03:30 +0200994 ret = td_io_getevents(td, min_evts, td->o.iodepth_batch_complete, tvp);
Jens Axboe97601022007-02-18 12:47:29 +0100995 if (ret < 0) {
Jens Axboee1161c32007-02-22 19:36:48 +0100996 td_verror(td, -ret, "td_io_getevents");
Jens Axboe97601022007-02-18 12:47:29 +0100997 return ret;
998 } else if (!ret)
999 return ret;
1000
Jens Axboe9520ebb2008-10-16 21:03:27 +02001001 init_icd(td, &icd, ret);
Jens Axboe97601022007-02-18 12:47:29 +01001002 ios_completed(td, &icd);
1003 if (!icd.error)
1004 return icd.bytes_done[0] + icd.bytes_done[1];
1005
Jens Axboe37e974a2007-03-02 15:16:45 +01001006 td_verror(td, icd.error, "io_u_queued_complete");
Jens Axboe97601022007-02-18 12:47:29 +01001007 return -1;
1008}
Jens Axboe7e77dd02007-02-20 10:57:34 +01001009
1010/*
1011 * Call when io_u is really queued, to update the submission latency.
1012 */
1013void io_u_queued(struct thread_data *td, struct io_u *io_u)
1014{
Jens Axboe9520ebb2008-10-16 21:03:27 +02001015 if (!td->o.disable_slat) {
1016 unsigned long slat_time;
Jens Axboe7e77dd02007-02-20 10:57:34 +01001017
Jens Axboe9520ebb2008-10-16 21:03:27 +02001018 slat_time = utime_since(&io_u->start_time, &io_u->issue_time);
Jens Axboe306ddc92009-05-18 13:08:12 +02001019 add_slat_sample(td, io_u->ddir, io_u->xfer_buflen, slat_time);
Jens Axboe9520ebb2008-10-16 21:03:27 +02001020 }
Jens Axboe7e77dd02007-02-20 10:57:34 +01001021}
Jens Axboe433afcb2007-02-22 10:39:01 +01001022
Jens Axboe5973caf2008-05-21 19:52:35 +02001023/*
1024 * "randomly" fill the buffer contents
1025 */
1026void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u,
1027 unsigned int max_bs)
1028{
1029 long *ptr = io_u->buf;
1030
1031 if (!td->o.zero_buffers) {
1032 while ((void *) ptr - io_u->buf < max_bs) {
1033 *ptr = rand() * GOLDEN_RATIO_PRIME;
1034 ptr++;
1035 }
1036 } else
1037 memset(ptr, 0, max_bs);
1038}