blob: efe838998d7a0d2dccecefab2e04c0f4ea430673 [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 Axboe10ba5352006-10-20 11:39:27 +020010
Jens Axboe97601022007-02-18 12:47:29 +010011struct io_completion_data {
12 int nr; /* input */
Jens Axboe97601022007-02-18 12:47:29 +010013
14 int error; /* output */
15 unsigned long bytes_done[2]; /* output */
16 struct timeval time; /* output */
17};
18
Jens Axboe10ba5352006-10-20 11:39:27 +020019/*
20 * The ->file_map[] contains a map of blocks we have or have not done io
21 * to yet. Used to make sure we cover the entire range in a fair fashion.
22 */
Jens Axboeaec2de22008-04-24 12:44:42 +020023static int random_map_free(struct fio_file *f, const unsigned long long block)
Jens Axboe10ba5352006-10-20 11:39:27 +020024{
Jens Axboeaec2de22008-04-24 12:44:42 +020025 unsigned int idx = RAND_MAP_IDX(f, block);
26 unsigned int bit = RAND_MAP_BIT(f, block);
Jens Axboe10ba5352006-10-20 11:39:27 +020027
Jens Axboe84422ac2008-02-19 20:10:26 +010028 dprint(FD_RANDOM, "free: b=%llu, idx=%u, bit=%u\n", block, idx, bit);
29
Jens Axboede605662008-05-31 00:21:12 +020030 return (f->file_map[idx] & (1 << bit)) == 0;
Jens Axboe10ba5352006-10-20 11:39:27 +020031}
32
33/*
Jens Axboedf415582006-10-20 11:41:03 +020034 * Mark a given offset as used in the map.
35 */
Jens Axboe9bf20612007-03-01 09:33:57 +010036static void mark_random_map(struct thread_data *td, struct io_u *io_u)
Jens Axboedf415582006-10-20 11:41:03 +020037{
Jens Axboe2dc1bbe2007-03-15 15:01:33 +010038 unsigned int min_bs = td->o.rw_min_bs;
Jens Axboe9bf20612007-03-01 09:33:57 +010039 struct fio_file *f = io_u->file;
Jens Axboea00735e2006-11-03 08:58:08 +010040 unsigned long long block;
Jens Axboe3e3357b2008-06-02 09:53:05 +020041 unsigned int blocks, nr_blocks;
Jens Axboedf415582006-10-20 11:41:03 +020042
Jens Axboeb9c5b642008-02-18 14:13:08 +010043 block = (io_u->offset - f->file_offset) / (unsigned long long) min_bs;
Jens Axboec685b5b2007-02-10 20:02:28 +010044 nr_blocks = (io_u->buflen + min_bs - 1) / min_bs;
Jens Axboe3e3357b2008-06-02 09:53:05 +020045 blocks = 0;
Jens Axboec685b5b2007-02-10 20:02:28 +010046
Jens Axboe3e3357b2008-06-02 09:53:05 +020047 while (nr_blocks) {
48 unsigned int this_blocks, mask;
Jens Axboedf415582006-10-20 11:41:03 +020049 unsigned int idx, bit;
50
Jens Axboe1e3d53a2007-03-22 19:01:48 +010051 /*
52 * If we have a mixed random workload, we may
53 * encounter blocks we already did IO to.
54 */
Jens Axboe8b113b42008-06-02 10:15:48 +020055 if ((td->o.ddir_nr == 1) && !random_map_free(f, block)) {
56 if (!blocks)
57 blocks = 1;
Jens Axboedf415582006-10-20 11:41:03 +020058 break;
Jens Axboe8b113b42008-06-02 10:15:48 +020059 }
Jens Axboedf415582006-10-20 11:41:03 +020060
Jens Axboeaec2de22008-04-24 12:44:42 +020061 idx = RAND_MAP_IDX(f, block);
62 bit = RAND_MAP_BIT(f, block);
Jens Axboedf415582006-10-20 11:41:03 +020063
Jens Axboe0032bf92007-02-13 17:39:56 +010064 fio_assert(td, idx < f->num_maps);
Jens Axboedf415582006-10-20 11:41:03 +020065
Jens Axboe3e3357b2008-06-02 09:53:05 +020066 this_blocks = nr_blocks;
67 if (this_blocks + bit > BLOCKS_PER_MAP)
68 this_blocks = BLOCKS_PER_MAP - bit;
69
70 if (this_blocks == BLOCKS_PER_MAP)
71 mask = -1U;
72 else
73 mask = ((1U << this_blocks) - 1) << bit;
74
Jens Axboe3e3357b2008-06-02 09:53:05 +020075 f->file_map[idx] |= mask;
76 nr_blocks -= this_blocks;
77 blocks += this_blocks;
Jens Axboec9dd34b2008-06-02 10:09:43 +020078 block += this_blocks;
Jens Axboedf415582006-10-20 11:41:03 +020079 }
80
Jens Axboea00735e2006-11-03 08:58:08 +010081 if ((blocks * min_bs) < io_u->buflen)
82 io_u->buflen = blocks * min_bs;
Jens Axboedf415582006-10-20 11:41:03 +020083}
84
Jens Axboe3e3357b2008-06-02 09:53:05 +020085static unsigned long long last_block(struct thread_data *td, struct fio_file *f,
86 enum fio_ddir ddir)
Jens Axboe2ba1c292008-02-01 13:16:38 +010087{
88 unsigned long long max_blocks;
Jens Axboed9dd70f2008-05-23 12:37:23 +020089 unsigned long long max_size;
Jens Axboe2ba1c292008-02-01 13:16:38 +010090
Jens Axboed9dd70f2008-05-23 12:37:23 +020091 /*
92 * Hmm, should we make sure that ->io_size <= ->real_file_size?
93 */
94 max_size = f->io_size;
95 if (max_size > f->real_file_size)
96 max_size = f->real_file_size;
97
98 max_blocks = max_size / (unsigned long long) td->o.min_bs[ddir];
Jens Axboe2ba1c292008-02-01 13:16:38 +010099 if (!max_blocks)
100 return 0;
101
Jens Axboe67778e82008-05-15 09:20:08 +0200102 return max_blocks;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100103}
104
Jens Axboedf415582006-10-20 11:41:03 +0200105/*
Jens Axboe10ba5352006-10-20 11:39:27 +0200106 * Return the next free block in the map.
107 */
108static int get_next_free_block(struct thread_data *td, struct fio_file *f,
Jens Axboe4ba66132008-02-05 10:05:50 +0100109 enum fio_ddir ddir, unsigned long long *b)
Jens Axboe10ba5352006-10-20 11:39:27 +0200110{
Jens Axboe84422ac2008-02-19 20:10:26 +0100111 unsigned long long min_bs = td->o.rw_min_bs;
Jens Axboe10ba5352006-10-20 11:39:27 +0200112 int i;
113
Jens Axboec685b5b2007-02-10 20:02:28 +0100114 i = f->last_free_lookup;
115 *b = (i * BLOCKS_PER_MAP);
Jens Axboe84422ac2008-02-19 20:10:26 +0100116 while ((*b) * min_bs < f->real_file_size) {
Jens Axboede605662008-05-31 00:21:12 +0200117 if (f->file_map[i] != (unsigned int) -1) {
Jens Axboe697a6062008-05-31 00:04:45 +0200118 *b += ffz(f->file_map[i]);
Jens Axboe4ba66132008-02-05 10:05:50 +0100119 if (*b > last_block(td, f, ddir))
Jens Axboe2ba1c292008-02-01 13:16:38 +0100120 break;
Jens Axboec685b5b2007-02-10 20:02:28 +0100121 f->last_free_lookup = i;
Jens Axboe10ba5352006-10-20 11:39:27 +0200122 return 0;
123 }
124
125 *b += BLOCKS_PER_MAP;
126 i++;
127 }
128
Jens Axboe2ba1c292008-02-01 13:16:38 +0100129 dprint(FD_IO, "failed finding a free block\n");
Jens Axboe10ba5352006-10-20 11:39:27 +0200130 return 1;
131}
132
Jens Axboeec4015d2007-03-23 08:04:27 +0100133static int get_next_rand_offset(struct thread_data *td, struct fio_file *f,
Jens Axboe4ba66132008-02-05 10:05:50 +0100134 enum fio_ddir ddir, unsigned long long *b)
Jens Axboeec4015d2007-03-23 08:04:27 +0100135{
Jens Axboe84422ac2008-02-19 20:10:26 +0100136 unsigned long long r;
Jens Axboeec4015d2007-03-23 08:04:27 +0100137 int loops = 5;
138
139 do {
140 r = os_random_long(&td->random_state);
Jens Axboe84422ac2008-02-19 20:10:26 +0100141 dprint(FD_RANDOM, "off rand %llu\n", r);
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100142 *b = (last_block(td, f, ddir) - 1)
Jens Axboedc873b62008-06-04 20:13:04 +0200143 * (r / ((unsigned long long) OS_RAND_MAX + 1.0));
Jens Axboe2ba1c292008-02-01 13:16:38 +0100144
Jens Axboe43c63a72007-05-21 13:23:30 +0200145 /*
146 * if we are not maintaining a random map, we are done.
147 */
Jens Axboe303032a2008-03-26 10:11:10 +0100148 if (!file_randommap(td, f))
Jens Axboe43c63a72007-05-21 13:23:30 +0200149 return 0;
150
151 /*
Jens Axboe84422ac2008-02-19 20:10:26 +0100152 * calculate map offset and check if it's free
Jens Axboe43c63a72007-05-21 13:23:30 +0200153 */
Jens Axboeaec2de22008-04-24 12:44:42 +0200154 if (random_map_free(f, *b))
Jens Axboe43c63a72007-05-21 13:23:30 +0200155 return 0;
156
Jens Axboe84422ac2008-02-19 20:10:26 +0100157 dprint(FD_RANDOM, "get_next_rand_offset: offset %llu busy\n",
158 *b);
Jens Axboe43c63a72007-05-21 13:23:30 +0200159 } while (--loops);
Jens Axboeec4015d2007-03-23 08:04:27 +0100160
161 /*
Jens Axboe43c63a72007-05-21 13:23:30 +0200162 * we get here, if we didn't suceed in looking up a block. generate
163 * a random start offset into the filemap, and find the first free
164 * block from there.
Jens Axboeec4015d2007-03-23 08:04:27 +0100165 */
Jens Axboe43c63a72007-05-21 13:23:30 +0200166 loops = 10;
167 do {
Jens Axboedc873b62008-06-04 20:13:04 +0200168 f->last_free_lookup = (f->num_maps - 1) *
169 (r / (OS_RAND_MAX + 1.0));
Jens Axboe4ba66132008-02-05 10:05:50 +0100170 if (!get_next_free_block(td, f, ddir, b))
Jens Axboe43c63a72007-05-21 13:23:30 +0200171 return 0;
Jens Axboeec4015d2007-03-23 08:04:27 +0100172
Jens Axboe43c63a72007-05-21 13:23:30 +0200173 r = os_random_long(&td->random_state);
174 } while (--loops);
175
176 /*
177 * that didn't work either, try exhaustive search from the start
178 */
179 f->last_free_lookup = 0;
Jens Axboe4ba66132008-02-05 10:05:50 +0100180 return get_next_free_block(td, f, ddir, b);
Jens Axboeec4015d2007-03-23 08:04:27 +0100181}
182
Jens Axboe10ba5352006-10-20 11:39:27 +0200183/*
184 * For random io, generate a random new block and see if it's used. Repeat
185 * until we find a free one. For sequential io, just return the end of
186 * the last io issued.
187 */
Jens Axboe9bf20612007-03-01 09:33:57 +0100188static int get_next_offset(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200189{
Jens Axboe9bf20612007-03-01 09:33:57 +0100190 struct fio_file *f = io_u->file;
Jens Axboeec4015d2007-03-23 08:04:27 +0100191 unsigned long long b;
Jens Axboe4ba66132008-02-05 10:05:50 +0100192 enum fio_ddir ddir = io_u->ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200193
Jens Axboeec4015d2007-03-23 08:04:27 +0100194 if (td_random(td) && (td->o.ddir_nr && !--td->ddir_nr)) {
195 td->ddir_nr = td->o.ddir_nr;
Jens Axboe10ba5352006-10-20 11:39:27 +0200196
Jens Axboe683023e2009-03-04 08:41:31 +0100197 if (get_next_rand_offset(td, f, ddir, &b)) {
198 dprint(FD_IO, "%s: getting rand offset failed\n",
199 f->file_name);
Jens Axboebca4ed42007-02-12 05:13:23 +0100200 return 1;
Jens Axboe683023e2009-03-04 08:41:31 +0100201 }
Jens Axboe43063a12007-03-27 20:21:24 +0200202 } else {
ljzhang,Yaxin Hu,Jianchao Tang0c3d7682007-07-26 10:59:25 +0200203 if (f->last_pos >= f->real_file_size) {
Jens Axboe4ba66132008-02-05 10:05:50 +0100204 if (!td_random(td) ||
Jens Axboe683023e2009-03-04 08:41:31 +0100205 get_next_rand_offset(td, f, ddir, &b)) {
206 dprint(FD_IO, "%s: pos %llu > size %llu\n",
207 f->file_name, f->last_pos,
208 f->real_file_size);
ljzhang,Yaxin Hu,Jianchao Tang0c3d7682007-07-26 10:59:25 +0200209 return 1;
Jens Axboe683023e2009-03-04 08:41:31 +0100210 }
ljzhang,Yaxin Hu,Jianchao Tangbcdedd02007-07-27 13:28:26 +0200211 } else
Jens Axboe4ba66132008-02-05 10:05:50 +0100212 b = (f->last_pos - f->file_offset) / td->o.min_bs[ddir];
Jens Axboe43063a12007-03-27 20:21:24 +0200213 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200214
Jens Axboe009bd842008-05-15 10:19:46 +0200215 io_u->offset = b * td->o.min_bs[ddir];
216 if (io_u->offset >= f->io_size) {
217 dprint(FD_IO, "get_next_offset: offset %llu >= io_size %llu\n",
218 io_u->offset, f->io_size);
219 return 1;
220 }
221
222 io_u->offset += f->file_offset;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100223 if (io_u->offset >= f->real_file_size) {
224 dprint(FD_IO, "get_next_offset: offset %llu >= size %llu\n",
225 io_u->offset, f->real_file_size);
Jens Axboe10ba5352006-10-20 11:39:27 +0200226 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100227 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200228
229 return 0;
230}
231
Jens Axboef3059de2008-06-11 15:37:32 +0200232static inline int is_power_of_2(unsigned int val)
233{
234 return (val != 0 && ((val & (val - 1)) == 0));
235}
236
Jens Axboe9bf20612007-03-01 09:33:57 +0100237static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200238{
Jens Axboebca4ed42007-02-12 05:13:23 +0100239 const int ddir = io_u->ddir;
Jens Axboef3f552b2008-06-13 10:27:05 +0200240 unsigned int uninitialized_var(buflen);
Jens Axboef3059de2008-06-11 15:37:32 +0200241 unsigned int minbs, maxbs;
Jens Axboe10ba5352006-10-20 11:39:27 +0200242 long r;
243
Jens Axboef3059de2008-06-11 15:37:32 +0200244 minbs = td->o.min_bs[ddir];
245 maxbs = td->o.max_bs[ddir];
246
247 if (minbs == maxbs)
248 buflen = minbs;
Jens Axboe10ba5352006-10-20 11:39:27 +0200249 else {
250 r = os_random_long(&td->bsrange_state);
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100251 if (!td->o.bssplit_nr) {
Jens Axboef3059de2008-06-11 15:37:32 +0200252 buflen = 1 + (unsigned int) ((double) maxbs *
253 (r / (OS_RAND_MAX + 1.0)));
254 if (buflen < minbs)
255 buflen = minbs;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100256 } else {
Jens Axboe564ca972007-12-14 12:21:19 +0100257 long perc = 0;
258 unsigned int i;
259
260 for (i = 0; i < td->o.bssplit_nr; i++) {
261 struct bssplit *bsp = &td->o.bssplit[i];
262
263 buflen = bsp->bs;
264 perc += bsp->perc;
Jens Axboef3059de2008-06-11 15:37:32 +0200265 if (r <= ((OS_RAND_MAX / 100L) * perc))
Jens Axboe564ca972007-12-14 12:21:19 +0100266 break;
267 }
268 }
Jens Axboef3059de2008-06-11 15:37:32 +0200269 if (!td->o.bs_unaligned && is_power_of_2(minbs))
270 buflen = (buflen + minbs - 1) & ~(minbs - 1);
Jens Axboe10ba5352006-10-20 11:39:27 +0200271 }
272
Jens Axboe4ba66132008-02-05 10:05:50 +0100273 if (io_u->offset + buflen > io_u->file->real_file_size) {
274 dprint(FD_IO, "lower buflen %u -> %u (ddir=%d)\n", buflen,
Jens Axboef3059de2008-06-11 15:37:32 +0200275 minbs, ddir);
276 buflen = minbs;
Jens Axboe4ba66132008-02-05 10:05:50 +0100277 }
Jens Axboe6a5e6882007-07-26 10:47:51 +0200278
Jens Axboe10ba5352006-10-20 11:39:27 +0200279 return buflen;
280}
281
Jens Axboeafe24a52007-03-16 20:27:27 +0100282static void set_rwmix_bytes(struct thread_data *td)
283{
Jens Axboeafe24a52007-03-16 20:27:27 +0100284 unsigned int diff;
285
286 /*
287 * we do time or byte based switch. this is needed because
288 * buffered writes may issue a lot quicker than they complete,
289 * whereas reads do not.
290 */
Jens Axboee47f7992007-03-21 14:05:39 +0100291 diff = td->o.rwmix[td->rwmix_ddir ^ 1];
Jens Axboe04c540d2008-05-28 10:35:26 +0200292 td->rwmix_issues = (td->io_issues[td->rwmix_ddir] * diff) / 100;
Jens Axboee47f7992007-03-21 14:05:39 +0100293}
294
295static inline enum fio_ddir get_rand_ddir(struct thread_data *td)
296{
297 unsigned int v;
298 long r;
299
300 r = os_random_long(&td->rwmix_state);
Jens Axboedc873b62008-06-04 20:13:04 +0200301 v = 1 + (int) (100.0 * (r / (OS_RAND_MAX + 1.0)));
Jens Axboe04c540d2008-05-28 10:35:26 +0200302 if (v <= td->o.rwmix[DDIR_READ])
Jens Axboee47f7992007-03-21 14:05:39 +0100303 return DDIR_READ;
304
305 return DDIR_WRITE;
Jens Axboeafe24a52007-03-16 20:27:27 +0100306}
307
Jens Axboe10ba5352006-10-20 11:39:27 +0200308/*
309 * Return the data direction for the next io_u. If the job is a
310 * mixed read/write workload, check the rwmix cycle and switch if
311 * necessary.
312 */
Jens Axboe1e97cce2006-12-05 11:44:16 +0100313static enum fio_ddir get_rw_ddir(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200314{
315 if (td_rw(td)) {
Jens Axboe10ba5352006-10-20 11:39:27 +0200316 /*
317 * Check if it's time to seed a new data direction.
318 */
Jens Axboee4928662008-04-07 09:19:46 +0200319 if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) {
Jens Axboee47f7992007-03-21 14:05:39 +0100320 unsigned long long max_bytes;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100321 enum fio_ddir ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200322
Jens Axboee47f7992007-03-21 14:05:39 +0100323 /*
324 * Put a top limit on how many bytes we do for
325 * one data direction, to avoid overflowing the
326 * ranges too much
327 */
328 ddir = get_rand_ddir(td);
329 max_bytes = td->this_io_bytes[ddir];
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100330 if (max_bytes >=
331 (td->o.size * td->o.rwmix[ddir] / 100)) {
Jens Axboe6162f522008-06-04 10:35:25 +0200332 if (!td->rw_end_set[ddir]) {
Jens Axboe38d77ca2007-03-21 14:20:20 +0100333 td->rw_end_set[ddir] = 1;
Jens Axboe6162f522008-06-04 10:35:25 +0200334 fio_gettime(&td->rw_end[ddir], NULL);
335 }
Jens Axboee4928662008-04-07 09:19:46 +0200336
Jens Axboee47f7992007-03-21 14:05:39 +0100337 ddir ^= 1;
Jens Axboe38d77ca2007-03-21 14:20:20 +0100338 }
Jens Axboee47f7992007-03-21 14:05:39 +0100339
340 if (ddir != td->rwmix_ddir)
341 set_rwmix_bytes(td);
342
343 td->rwmix_ddir = ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200344 }
345 return td->rwmix_ddir;
346 } else if (td_read(td))
347 return DDIR_READ;
348 else
349 return DDIR_WRITE;
350}
351
Jens Axboe60f2c652008-05-16 12:31:36 +0200352static void put_file_log(struct thread_data *td, struct fio_file *f)
353{
354 int ret = put_file(td, f);
355
356 if (ret)
357 td_verror(td, ret, "file close");
358}
359
Jens Axboe10ba5352006-10-20 11:39:27 +0200360void put_io_u(struct thread_data *td, struct io_u *io_u)
361{
Jens Axboe0c6e7512007-02-22 11:19:39 +0100362 assert((io_u->flags & IO_U_F_FREE) == 0);
363 io_u->flags |= IO_U_F_FREE;
364
Jens Axboe60f2c652008-05-16 12:31:36 +0200365 if (io_u->file)
366 put_file_log(td, io_u->file);
Jens Axboe2dbdab72007-04-26 10:21:15 +0200367
Jens Axboe10ba5352006-10-20 11:39:27 +0200368 io_u->file = NULL;
Jens Axboe01743ee2008-06-02 12:19:19 +0200369 flist_del(&io_u->list);
370 flist_add(&io_u->list, &td->io_u_freelist);
Jens Axboe10ba5352006-10-20 11:39:27 +0200371 td->cur_depth--;
372}
373
Jens Axboe755200a2007-02-19 13:08:12 +0100374void requeue_io_u(struct thread_data *td, struct io_u **io_u)
375{
376 struct io_u *__io_u = *io_u;
377
Jens Axboe465221b2008-05-30 22:07:49 +0200378 dprint(FD_IO, "requeue %p\n", __io_u);
379
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100380 __io_u->flags |= IO_U_F_FREE;
Jens Axboee4f54ad2008-02-04 10:56:07 +0100381 if ((__io_u->flags & IO_U_F_FLIGHT) && (__io_u->ddir != DDIR_SYNC))
382 td->io_issues[__io_u->ddir]--;
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100383
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100384 __io_u->flags &= ~IO_U_F_FLIGHT;
385
Jens Axboe01743ee2008-06-02 12:19:19 +0200386 flist_del(&__io_u->list);
387 flist_add_tail(&__io_u->list, &td->io_u_requeues);
Jens Axboe755200a2007-02-19 13:08:12 +0100388 td->cur_depth--;
389 *io_u = NULL;
390}
391
Jens Axboe9bf20612007-03-01 09:33:57 +0100392static int fill_io_u(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200393{
Jens Axboeb4c5e1a2007-10-25 18:44:45 +0200394 if (td->io_ops->flags & FIO_NOIO)
395 goto out;
396
Jens Axboe10ba5352006-10-20 11:39:27 +0200397 /*
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200398 * see if it's time to sync
399 */
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100400 if (td->o.fsync_blocks &&
401 !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) &&
402 td->io_issues[DDIR_WRITE] && should_fsync(td)) {
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200403 io_u->ddir = DDIR_SYNC;
Jens Axboec38e9462007-03-27 08:48:48 +0200404 goto out;
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200405 }
406
Jens Axboea00735e2006-11-03 08:58:08 +0100407 io_u->ddir = get_rw_ddir(td);
408
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200409 /*
Jens Axboe48f5abd2007-07-20 13:25:04 +0200410 * See if it's time to switch to a new zone
411 */
412 if (td->zone_bytes >= td->o.zone_size) {
413 td->zone_bytes = 0;
414 io_u->file->last_pos += td->o.zone_skip;
415 td->io_skip_bytes += td->o.zone_skip;
416 }
417
418 /*
Jens Axboec685b5b2007-02-10 20:02:28 +0100419 * No log, let the seq/rand engine retrieve the next buflen and
420 * position.
Jens Axboe10ba5352006-10-20 11:39:27 +0200421 */
Jens Axboe2ba1c292008-02-01 13:16:38 +0100422 if (get_next_offset(td, io_u)) {
423 dprint(FD_IO, "io_u %p, failed getting offset\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100424 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100425 }
Jens Axboec685b5b2007-02-10 20:02:28 +0100426
Jens Axboe9bf20612007-03-01 09:33:57 +0100427 io_u->buflen = get_next_buflen(td, io_u);
Jens Axboe2ba1c292008-02-01 13:16:38 +0100428 if (!io_u->buflen) {
429 dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100430 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100431 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200432
Jens Axboe2ba1c292008-02-01 13:16:38 +0100433 if (io_u->offset + io_u->buflen > io_u->file->real_file_size) {
434 dprint(FD_IO, "io_u %p, offset too large\n", io_u);
Jens Axboe4ba66132008-02-05 10:05:50 +0100435 dprint(FD_IO, " off=%llu/%lu > %llu\n", io_u->offset,
436 io_u->buflen, io_u->file->real_file_size);
Jens Axboe6a5e6882007-07-26 10:47:51 +0200437 return 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100438 }
Jens Axboe6a5e6882007-07-26 10:47:51 +0200439
Jens Axboebca4ed42007-02-12 05:13:23 +0100440 /*
441 * mark entry before potentially trimming io_u
442 */
Jens Axboe303032a2008-03-26 10:11:10 +0100443 if (td_random(td) && file_randommap(td, io_u->file))
Jens Axboe9bf20612007-03-01 09:33:57 +0100444 mark_random_map(td, io_u);
Jens Axboe10ba5352006-10-20 11:39:27 +0200445
Jens Axboebca4ed42007-02-12 05:13:23 +0100446 /*
447 * If using a write iolog, store this entry.
448 */
Jens Axboec38e9462007-03-27 08:48:48 +0200449out:
Jens Axboe2ba1c292008-02-01 13:16:38 +0100450 dprint_io_u(io_u, "fill_io_u");
Jens Axboed9d91e32008-01-31 13:25:42 +0100451 td->zone_bytes += io_u->buflen;
Jens Axboef29b25a2007-07-23 08:56:43 +0200452 log_io_u(td, io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100453 return 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200454}
455
Jens Axboe838bc702008-05-22 13:08:23 +0200456static void __io_u_mark_map(unsigned int *map, unsigned int nr)
457{
458 int index = 0;
459
460 switch (nr) {
461 default:
462 index = 6;
463 break;
464 case 33 ... 64:
465 index = 5;
466 break;
467 case 17 ... 32:
468 index = 4;
469 break;
470 case 9 ... 16:
471 index = 3;
472 break;
473 case 5 ... 8:
474 index = 2;
475 break;
476 case 1 ... 4:
477 index = 1;
478 case 0:
479 break;
480 }
481
482 map[index]++;
483}
484
485void io_u_mark_submit(struct thread_data *td, unsigned int nr)
486{
487 __io_u_mark_map(td->ts.io_u_submit, nr);
488 td->ts.total_submit++;
489}
490
491void io_u_mark_complete(struct thread_data *td, unsigned int nr)
492{
493 __io_u_mark_map(td->ts.io_u_complete, nr);
494 td->ts.total_complete++;
495}
496
Jens Axboed8005752008-05-15 09:49:09 +0200497void io_u_mark_depth(struct thread_data *td, unsigned int nr)
Jens Axboe71619dc2007-01-13 23:56:33 +0100498{
499 int index = 0;
500
501 switch (td->cur_depth) {
502 default:
Jens Axboea783e612007-06-19 09:50:28 +0200503 index = 6;
504 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100505 case 32 ... 63:
Jens Axboea783e612007-06-19 09:50:28 +0200506 index = 5;
507 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100508 case 16 ... 31:
Jens Axboea783e612007-06-19 09:50:28 +0200509 index = 4;
510 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100511 case 8 ... 15:
Jens Axboea783e612007-06-19 09:50:28 +0200512 index = 3;
513 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100514 case 4 ... 7:
Jens Axboea783e612007-06-19 09:50:28 +0200515 index = 2;
516 break;
Jens Axboe71619dc2007-01-13 23:56:33 +0100517 case 2 ... 3:
Jens Axboea783e612007-06-19 09:50:28 +0200518 index = 1;
Jens Axboe71619dc2007-01-13 23:56:33 +0100519 case 1:
520 break;
521 }
522
Jens Axboe3bec7ae2008-05-14 21:08:37 +0200523 td->ts.io_u_map[index] += nr;
Jens Axboe71619dc2007-01-13 23:56:33 +0100524}
525
Jens Axboe04a0fea2007-06-19 12:48:41 +0200526static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec)
527{
528 int index = 0;
529
530 assert(usec < 1000);
531
532 switch (usec) {
533 case 750 ... 999:
534 index = 9;
535 break;
536 case 500 ... 749:
537 index = 8;
538 break;
539 case 250 ... 499:
540 index = 7;
541 break;
542 case 100 ... 249:
543 index = 6;
544 break;
545 case 50 ... 99:
546 index = 5;
547 break;
548 case 20 ... 49:
549 index = 4;
550 break;
551 case 10 ... 19:
552 index = 3;
553 break;
554 case 4 ... 9:
555 index = 2;
556 break;
557 case 2 ... 3:
558 index = 1;
559 case 0 ... 1:
560 break;
561 }
562
563 assert(index < FIO_IO_U_LAT_U_NR);
564 td->ts.io_u_lat_u[index]++;
565}
566
567static void io_u_mark_lat_msec(struct thread_data *td, unsigned long msec)
Jens Axboeec118302007-02-17 04:38:20 +0100568{
569 int index = 0;
570
571 switch (msec) {
572 default:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200573 index = 11;
574 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100575 case 1000 ... 1999:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200576 index = 10;
577 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100578 case 750 ... 999:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200579 index = 9;
580 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100581 case 500 ... 749:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200582 index = 8;
583 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100584 case 250 ... 499:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200585 index = 7;
586 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100587 case 100 ... 249:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200588 index = 6;
589 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100590 case 50 ... 99:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200591 index = 5;
592 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100593 case 20 ... 49:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200594 index = 4;
595 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100596 case 10 ... 19:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200597 index = 3;
598 break;
Jens Axboe8abdce62007-02-21 10:22:55 +0100599 case 4 ... 9:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200600 index = 2;
601 break;
Jens Axboeec118302007-02-17 04:38:20 +0100602 case 2 ... 3:
Jens Axboe04a0fea2007-06-19 12:48:41 +0200603 index = 1;
Jens Axboeec118302007-02-17 04:38:20 +0100604 case 0 ... 1:
605 break;
606 }
607
Jens Axboe04a0fea2007-06-19 12:48:41 +0200608 assert(index < FIO_IO_U_LAT_M_NR);
609 td->ts.io_u_lat_m[index]++;
610}
611
612static void io_u_mark_latency(struct thread_data *td, unsigned long usec)
613{
614 if (usec < 1000)
615 io_u_mark_lat_usec(td, usec);
616 else
617 io_u_mark_lat_msec(td, usec / 1000);
Jens Axboeec118302007-02-17 04:38:20 +0100618}
619
Jens Axboe0aabe162007-02-23 08:45:55 +0100620/*
621 * Get next file to service by choosing one at random
622 */
Jens Axboe1c178182007-03-13 13:25:18 +0100623static struct fio_file *get_next_file_rand(struct thread_data *td, int goodf,
624 int badf)
Jens Axboe0aabe162007-02-23 08:45:55 +0100625{
Jens Axboe0aabe162007-02-23 08:45:55 +0100626 struct fio_file *f;
Jens Axboe1c178182007-03-13 13:25:18 +0100627 int fno;
Jens Axboe0aabe162007-02-23 08:45:55 +0100628
629 do {
Jens Axboe7c83c082007-03-01 10:04:15 +0100630 long r = os_random_long(&td->next_file_state);
631
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100632 fno = (unsigned int) ((double) td->o.nr_files
Jens Axboedc873b62008-06-04 20:13:04 +0200633 * (r / (OS_RAND_MAX + 1.0)));
Jens Axboe126d65c2008-03-01 18:04:31 +0100634 f = td->files[fno];
Jens Axboe059e63c2007-03-27 20:34:47 +0200635 if (f->flags & FIO_FILE_DONE)
636 continue;
Jens Axboe1c178182007-03-13 13:25:18 +0100637
Jens Axboe2ba1c292008-02-01 13:16:38 +0100638 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) {
639 dprint(FD_FILE, "get_next_file_rand: %p\n", f);
Jens Axboe0aabe162007-02-23 08:45:55 +0100640 return f;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100641 }
Jens Axboe0aabe162007-02-23 08:45:55 +0100642 } while (1);
643}
644
645/*
646 * Get next file to service by doing round robin between all available ones
647 */
Jens Axboe1c178182007-03-13 13:25:18 +0100648static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf,
649 int badf)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100650{
651 unsigned int old_next_file = td->next_file;
652 struct fio_file *f;
653
654 do {
Jens Axboe126d65c2008-03-01 18:04:31 +0100655 f = td->files[td->next_file];
Jens Axboe3d7c3912007-02-19 13:16:12 +0100656
657 td->next_file++;
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100658 if (td->next_file >= td->o.nr_files)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100659 td->next_file = 0;
660
Jens Axboed5ed68e2007-03-28 09:33:43 +0200661 if (f->flags & FIO_FILE_DONE) {
662 f = NULL;
Jens Axboe059e63c2007-03-27 20:34:47 +0200663 continue;
Jens Axboed5ed68e2007-03-28 09:33:43 +0200664 }
Jens Axboe059e63c2007-03-27 20:34:47 +0200665
Jens Axboe1c178182007-03-13 13:25:18 +0100666 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
Jens Axboe3d7c3912007-02-19 13:16:12 +0100667 break;
668
669 f = NULL;
670 } while (td->next_file != old_next_file);
671
Jens Axboe2ba1c292008-02-01 13:16:38 +0100672 dprint(FD_FILE, "get_next_file_rr: %p\n", f);
Jens Axboe3d7c3912007-02-19 13:16:12 +0100673 return f;
674}
675
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100676static struct fio_file *get_next_file(struct thread_data *td)
677{
Jens Axboe1907dbc2007-03-12 11:44:28 +0100678 struct fio_file *f;
679
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100680 assert(td->o.nr_files <= td->files_index);
Jens Axboe1c178182007-03-13 13:25:18 +0100681
Jens Axboe2ba1c292008-02-01 13:16:38 +0100682 if (!td->nr_open_files || td->nr_done_files >= td->o.nr_files) {
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100683 dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d,"
684 " nr_files=%d\n", td->nr_open_files,
685 td->nr_done_files,
686 td->o.nr_files);
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100687 return NULL;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100688 }
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100689
Jens Axboe1907dbc2007-03-12 11:44:28 +0100690 f = td->file_service_file;
Jens Axboe683023e2009-03-04 08:41:31 +0100691 if (f && (f->flags & FIO_FILE_OPEN) && !(f->flags & FIO_FILE_CLOSING)) {
Jens Axboea086c252009-03-04 08:27:37 +0100692 if (td->o.file_service_type == FIO_FSERVICE_SEQ)
693 goto out;
694 if (td->file_service_left--)
695 goto out;
696 }
Jens Axboe1907dbc2007-03-12 11:44:28 +0100697
Jens Axboea086c252009-03-04 08:27:37 +0100698 if (td->o.file_service_type == FIO_FSERVICE_RR ||
699 td->o.file_service_type == FIO_FSERVICE_SEQ)
Jens Axboe1c178182007-03-13 13:25:18 +0100700 f = get_next_file_rr(td, FIO_FILE_OPEN, FIO_FILE_CLOSING);
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100701 else
Jens Axboe1c178182007-03-13 13:25:18 +0100702 f = get_next_file_rand(td, FIO_FILE_OPEN, FIO_FILE_CLOSING);
Jens Axboe1907dbc2007-03-12 11:44:28 +0100703
704 td->file_service_file = f;
705 td->file_service_left = td->file_service_nr - 1;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100706out:
Jens Axboe683023e2009-03-04 08:41:31 +0100707 dprint(FD_FILE, "get_next_file: %p [%s]\n", f, f->file_name);
Jens Axboe1907dbc2007-03-12 11:44:28 +0100708 return f;
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100709}
710
Jens Axboe1c178182007-03-13 13:25:18 +0100711static struct fio_file *find_next_new_file(struct thread_data *td)
712{
713 struct fio_file *f;
714
Jens Axboe1020a132007-03-29 11:15:06 +0200715 if (!td->nr_open_files || td->nr_done_files >= td->o.nr_files)
716 return NULL;
717
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100718 if (td->o.file_service_type == FIO_FSERVICE_RR)
Jens Axboe1c178182007-03-13 13:25:18 +0100719 f = get_next_file_rr(td, 0, FIO_FILE_OPEN);
720 else
721 f = get_next_file_rand(td, 0, FIO_FILE_OPEN);
722
723 return f;
724}
725
Jens Axboe429f6672007-07-23 10:38:43 +0200726static int set_io_u_file(struct thread_data *td, struct io_u *io_u)
727{
728 struct fio_file *f;
729
730 do {
731 f = get_next_file(td);
732 if (!f)
733 return 1;
734
735set_file:
736 io_u->file = f;
737 get_file(f);
738
739 if (!fill_io_u(td, io_u))
740 break;
741
742 /*
Jens Axboe009bd842008-05-15 10:19:46 +0200743 * optimization to prevent close/open of the same file. This
744 * way we preserve queueing etc.
745 */
746 if (td->o.nr_files == 1 && td->o.time_based) {
Jens Axboe60f2c652008-05-16 12:31:36 +0200747 put_file_log(td, f);
Jens Axboe009bd842008-05-15 10:19:46 +0200748 fio_file_reset(f);
749 goto set_file;
750 }
751
752 /*
Jens Axboe429f6672007-07-23 10:38:43 +0200753 * td_io_close() does a put_file() as well, so no need to
754 * do that here.
755 */
Jens Axboe683023e2009-03-04 08:41:31 +0100756 dprint(FD_FILE, "%s: is done\n", f->file_name);
Jens Axboe429f6672007-07-23 10:38:43 +0200757 io_u->file = NULL;
758 td_io_close_file(td, f);
759 f->flags |= FIO_FILE_DONE;
760 td->nr_done_files++;
761
762 /*
763 * probably not the right place to do this, but see
764 * if we need to open a new file
765 */
766 if (td->nr_open_files < td->o.open_files &&
767 td->o.open_files != td->o.nr_files) {
768 f = find_next_new_file(td);
769
770 if (!f || td_io_open_file(td, f))
771 return 1;
772
773 goto set_file;
774 }
775 } while (1);
776
777 return 0;
778}
779
780
Jens Axboe10ba5352006-10-20 11:39:27 +0200781struct io_u *__get_io_u(struct thread_data *td)
782{
783 struct io_u *io_u = NULL;
784
Jens Axboe01743ee2008-06-02 12:19:19 +0200785 if (!flist_empty(&td->io_u_requeues))
786 io_u = flist_entry(td->io_u_requeues.next, struct io_u, list);
Jens Axboe755200a2007-02-19 13:08:12 +0100787 else if (!queue_full(td)) {
Jens Axboe01743ee2008-06-02 12:19:19 +0200788 io_u = flist_entry(td->io_u_freelist.next, struct io_u, list);
Jens Axboe10ba5352006-10-20 11:39:27 +0200789
Jens Axboe6040dab2006-10-24 19:38:15 +0200790 io_u->buflen = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200791 io_u->resid = 0;
Jens Axboe755200a2007-02-19 13:08:12 +0100792 io_u->file = NULL;
Jens Axboed7762cf2007-02-23 12:34:57 +0100793 io_u->end_io = NULL;
Jens Axboe755200a2007-02-19 13:08:12 +0100794 }
795
796 if (io_u) {
Jens Axboe0c6e7512007-02-22 11:19:39 +0100797 assert(io_u->flags & IO_U_F_FREE);
798 io_u->flags &= ~IO_U_F_FREE;
799
Jens Axboe755200a2007-02-19 13:08:12 +0100800 io_u->error = 0;
Jens Axboe01743ee2008-06-02 12:19:19 +0200801 flist_del(&io_u->list);
802 flist_add(&io_u->list, &td->io_u_busylist);
Jens Axboe10ba5352006-10-20 11:39:27 +0200803 td->cur_depth++;
804 }
805
806 return io_u;
807}
808
809/*
810 * Return an io_u to be processed. Gets a buflen and offset, sets direction,
811 * etc. The returned io_u is fully ready to be prepped and submitted.
812 */
Jens Axboe3d7c3912007-02-19 13:16:12 +0100813struct io_u *get_io_u(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200814{
Jens Axboe3d7c3912007-02-19 13:16:12 +0100815 struct fio_file *f;
Jens Axboe10ba5352006-10-20 11:39:27 +0200816 struct io_u *io_u;
817
818 io_u = __get_io_u(td);
Jens Axboe2ba1c292008-02-01 13:16:38 +0100819 if (!io_u) {
820 dprint(FD_IO, "__get_io_u failed\n");
Jens Axboe10ba5352006-10-20 11:39:27 +0200821 return NULL;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100822 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200823
Jens Axboe755200a2007-02-19 13:08:12 +0100824 /*
825 * from a requeue, io_u already setup
826 */
827 if (io_u->file)
Jens Axboe77f392b2007-02-19 20:13:09 +0100828 goto out;
Jens Axboe755200a2007-02-19 13:08:12 +0100829
Jens Axboe429f6672007-07-23 10:38:43 +0200830 /*
831 * If using an iolog, grab next piece if any available.
832 */
833 if (td->o.read_iolog_file) {
834 if (read_iolog_get(td, io_u))
835 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100836 } else if (set_io_u_file(td, io_u)) {
837 dprint(FD_IO, "io_u %p, setting file failed\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +0200838 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100839 }
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100840
Jens Axboe429f6672007-07-23 10:38:43 +0200841 f = io_u->file;
842 assert(f->flags & FIO_FILE_OPEN);
Jens Axboe97af62c2007-05-22 11:12:13 +0200843
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200844 if (io_u->ddir != DDIR_SYNC) {
Jens Axboed0656a92008-02-01 18:33:23 +0100845 if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) {
Jens Axboe2ba1c292008-02-01 13:16:38 +0100846 dprint(FD_IO, "get_io_u: zero buflen on %p\n", io_u);
Jens Axboe429f6672007-07-23 10:38:43 +0200847 goto err_put;
Jens Axboe2ba1c292008-02-01 13:16:38 +0100848 }
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200849
Jens Axboe36167d82007-02-18 05:41:31 +0100850 f->last_pos = io_u->offset + io_u->buflen;
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200851
Jens Axboe2dc1bbe2007-03-15 15:01:33 +0100852 if (td->o.verify != VERIFY_NONE)
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200853 populate_verify_io_u(td, io_u);
Jens Axboee4dad9c2008-05-28 10:53:44 +0200854 else if (td->o.refill_buffers && io_u->ddir == DDIR_WRITE)
855 io_u_fill_buffer(td, io_u, io_u->xfer_buflen);
Jens Axboe10ba5352006-10-20 11:39:27 +0200856 }
857
Jens Axboe165faf12007-02-07 11:30:37 +0100858 /*
859 * Set io data pointers.
860 */
Jens Axboed460eb32007-04-16 21:39:33 +0200861 io_u->endpos = io_u->offset + io_u->buflen;
Jens Axboecec6b552007-02-06 20:15:38 +0100862 io_u->xfer_buf = io_u->buf;
863 io_u->xfer_buflen = io_u->buflen;
Jens Axboe5973caf2008-05-21 19:52:35 +0200864
Jens Axboe6ac7a332008-03-01 15:22:32 +0100865out:
Jens Axboe429f6672007-07-23 10:38:43 +0200866 if (!td_io_prep(td, io_u)) {
Jens Axboe993bf482008-11-14 13:04:53 +0100867 if (!td->o.disable_slat)
868 fio_gettime(&io_u->start_time, NULL);
Jens Axboe429f6672007-07-23 10:38:43 +0200869 return io_u;
Jens Axboe36167d82007-02-18 05:41:31 +0100870 }
Jens Axboe429f6672007-07-23 10:38:43 +0200871err_put:
Jens Axboe2ba1c292008-02-01 13:16:38 +0100872 dprint(FD_IO, "get_io_u failed\n");
Jens Axboe429f6672007-07-23 10:38:43 +0200873 put_io_u(td, io_u);
874 return NULL;
Jens Axboe10ba5352006-10-20 11:39:27 +0200875}
876
Jens Axboe54517922007-03-05 10:06:06 +0100877void io_u_log_error(struct thread_data *td, struct io_u *io_u)
878{
879 const char *msg[] = { "read", "write", "sync" };
880
881 log_err("fio: io_u error");
882
883 if (io_u->file)
884 log_err(" on file %s", io_u->file->file_name);
885
886 log_err(": %s\n", strerror(io_u->error));
887
Jens Axboe5ec10ea2008-03-06 15:42:00 +0100888 log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir],
889 io_u->offset, io_u->xfer_buflen);
Jens Axboe54517922007-03-05 10:06:06 +0100890
891 if (!td->error)
892 td_verror(td, io_u->error, "io_u error");
893}
894
Jens Axboe97601022007-02-18 12:47:29 +0100895static void io_completed(struct thread_data *td, struct io_u *io_u,
896 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +0200897{
Jens Axboedbad30b2008-12-05 13:17:16 +0100898 /*
899 * Older gcc's are too dumb to realize that usec is always used
900 * initialized, silence that warning.
901 */
902 unsigned long uninitialized_var(usec);
Jens Axboe10ba5352006-10-20 11:39:27 +0200903
Jens Axboe2ba1c292008-02-01 13:16:38 +0100904 dprint_io_u(io_u, "io complete");
905
Jens Axboe0c6e7512007-02-22 11:19:39 +0100906 assert(io_u->flags & IO_U_F_FLIGHT);
907 io_u->flags &= ~IO_U_F_FLIGHT;
908
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200909 if (io_u->ddir == DDIR_SYNC) {
910 td->last_was_sync = 1;
911 return;
912 }
913
914 td->last_was_sync = 0;
915
Jens Axboe10ba5352006-10-20 11:39:27 +0200916 if (!io_u->error) {
917 unsigned int bytes = io_u->buflen - io_u->resid;
Jens Axboe1e97cce2006-12-05 11:44:16 +0100918 const enum fio_ddir idx = io_u->ddir;
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200919 int ret;
Jens Axboe10ba5352006-10-20 11:39:27 +0200920
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200921 td->io_blocks[idx]++;
922 td->io_bytes[idx] += bytes;
923 td->this_io_bytes[idx] += bytes;
Jens Axboe10ba5352006-10-20 11:39:27 +0200924
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200925 if (ramp_time_over(td)) {
Jens Axboe9520ebb2008-10-16 21:03:27 +0200926 if (!td->o.disable_clat || !td->o.disable_bw)
927 usec = utime_since(&io_u->issue_time,
928 &icd->time);
Jens Axboe721938a2008-09-10 09:46:16 +0200929
Jens Axboe9520ebb2008-10-16 21:03:27 +0200930 if (!td->o.disable_clat) {
931 add_clat_sample(td, idx, usec);
932 io_u_mark_latency(td, usec);
933 }
934 if (!td->o.disable_bw)
935 add_bw_sample(td, idx, &icd->time);
Jens Axboe721938a2008-09-10 09:46:16 +0200936 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200937
Jens Axboe660a1cb2007-04-17 15:37:47 +0200938 if (td_write(td) && idx == DDIR_WRITE &&
Shawn Lewis86705792007-11-21 09:35:41 +0100939 td->o.do_verify &&
Jens Axboe41128402007-03-27 08:32:48 +0200940 td->o.verify != VERIFY_NONE)
Jens Axboe10ba5352006-10-20 11:39:27 +0200941 log_io_piece(td, io_u);
942
Jens Axboeb29ee5b2008-09-11 10:17:26 +0200943 icd->bytes_done[idx] += bytes;
Jens Axboe3af6ef32007-02-18 06:57:43 +0100944
Jens Axboed7762cf2007-02-23 12:34:57 +0100945 if (io_u->end_io) {
Jens Axboe36690c92007-03-26 10:23:34 +0200946 ret = io_u->end_io(td, io_u);
Jens Axboe3af6ef32007-02-18 06:57:43 +0100947 if (ret && !icd->error)
948 icd->error = ret;
949 }
Jens Axboe54517922007-03-05 10:06:06 +0100950 } else {
Jens Axboe10ba5352006-10-20 11:39:27 +0200951 icd->error = io_u->error;
Jens Axboe54517922007-03-05 10:06:06 +0100952 io_u_log_error(td, io_u);
953 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200954}
955
Jens Axboe9520ebb2008-10-16 21:03:27 +0200956static void init_icd(struct thread_data *td, struct io_completion_data *icd,
957 int nr)
Jens Axboe36167d82007-02-18 05:41:31 +0100958{
Jens Axboe9520ebb2008-10-16 21:03:27 +0200959 if (!td->o.disable_clat || !td->o.disable_bw)
960 fio_gettime(&icd->time, NULL);
Jens Axboe36167d82007-02-18 05:41:31 +0100961
Jens Axboe3af6ef32007-02-18 06:57:43 +0100962 icd->nr = nr;
963
Jens Axboe36167d82007-02-18 05:41:31 +0100964 icd->error = 0;
965 icd->bytes_done[0] = icd->bytes_done[1] = 0;
966}
967
Jens Axboe97601022007-02-18 12:47:29 +0100968static void ios_completed(struct thread_data *td,
969 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +0200970{
971 struct io_u *io_u;
972 int i;
973
Jens Axboe10ba5352006-10-20 11:39:27 +0200974 for (i = 0; i < icd->nr; i++) {
975 io_u = td->io_ops->event(td, i);
976
977 io_completed(td, io_u, icd);
978 put_io_u(td, io_u);
979 }
980}
Jens Axboe97601022007-02-18 12:47:29 +0100981
Jens Axboee7e6cfb2007-02-20 10:58:34 +0100982/*
983 * Complete a single io_u for the sync engines.
984 */
Jens Axboed7762cf2007-02-23 12:34:57 +0100985long io_u_sync_complete(struct thread_data *td, struct io_u *io_u)
Jens Axboe97601022007-02-18 12:47:29 +0100986{
987 struct io_completion_data icd;
988
Jens Axboe9520ebb2008-10-16 21:03:27 +0200989 init_icd(td, &icd, 1);
Jens Axboe97601022007-02-18 12:47:29 +0100990 io_completed(td, io_u, &icd);
991 put_io_u(td, io_u);
992
993 if (!icd.error)
994 return icd.bytes_done[0] + icd.bytes_done[1];
995
Jens Axboe37e974a2007-03-02 15:16:45 +0100996 td_verror(td, icd.error, "io_u_sync_complete");
Jens Axboe97601022007-02-18 12:47:29 +0100997 return -1;
998}
999
Jens Axboee7e6cfb2007-02-20 10:58:34 +01001000/*
1001 * Called to complete min_events number of io for the async engines.
1002 */
Jens Axboe49504212008-06-05 09:03:30 +02001003long io_u_queued_complete(struct thread_data *td, int min_evts)
Jens Axboe97601022007-02-18 12:47:29 +01001004{
Jens Axboe97601022007-02-18 12:47:29 +01001005 struct io_completion_data icd;
Jens Axboe00de55e2007-02-20 10:45:57 +01001006 struct timespec *tvp = NULL;
Jens Axboe97601022007-02-18 12:47:29 +01001007 int ret;
Davide Libenzi4d06a332007-03-22 07:43:50 +01001008 struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, };
Jens Axboe97601022007-02-18 12:47:29 +01001009
Jens Axboe49504212008-06-05 09:03:30 +02001010 dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts);
Jens Axboeb271fe62008-02-04 10:49:41 +01001011
Jens Axboe49504212008-06-05 09:03:30 +02001012 if (!min_evts)
Jens Axboe00de55e2007-02-20 10:45:57 +01001013 tvp = &ts;
Jens Axboe97601022007-02-18 12:47:29 +01001014
Jens Axboe49504212008-06-05 09:03:30 +02001015 ret = td_io_getevents(td, min_evts, td->o.iodepth_batch_complete, tvp);
Jens Axboe97601022007-02-18 12:47:29 +01001016 if (ret < 0) {
Jens Axboee1161c32007-02-22 19:36:48 +01001017 td_verror(td, -ret, "td_io_getevents");
Jens Axboe97601022007-02-18 12:47:29 +01001018 return ret;
1019 } else if (!ret)
1020 return ret;
1021
Jens Axboe9520ebb2008-10-16 21:03:27 +02001022 init_icd(td, &icd, ret);
Jens Axboe97601022007-02-18 12:47:29 +01001023 ios_completed(td, &icd);
1024 if (!icd.error)
1025 return icd.bytes_done[0] + icd.bytes_done[1];
1026
Jens Axboe37e974a2007-03-02 15:16:45 +01001027 td_verror(td, icd.error, "io_u_queued_complete");
Jens Axboe97601022007-02-18 12:47:29 +01001028 return -1;
1029}
Jens Axboe7e77dd02007-02-20 10:57:34 +01001030
1031/*
1032 * Call when io_u is really queued, to update the submission latency.
1033 */
1034void io_u_queued(struct thread_data *td, struct io_u *io_u)
1035{
Jens Axboe9520ebb2008-10-16 21:03:27 +02001036 if (!td->o.disable_slat) {
1037 unsigned long slat_time;
Jens Axboe7e77dd02007-02-20 10:57:34 +01001038
Jens Axboe9520ebb2008-10-16 21:03:27 +02001039 slat_time = utime_since(&io_u->start_time, &io_u->issue_time);
1040 add_slat_sample(td, io_u->ddir, slat_time);
1041 }
Jens Axboe7e77dd02007-02-20 10:57:34 +01001042}
Jens Axboe433afcb2007-02-22 10:39:01 +01001043
Jens Axboe5973caf2008-05-21 19:52:35 +02001044/*
1045 * "randomly" fill the buffer contents
1046 */
1047void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u,
1048 unsigned int max_bs)
1049{
1050 long *ptr = io_u->buf;
1051
1052 if (!td->o.zero_buffers) {
1053 while ((void *) ptr - io_u->buf < max_bs) {
1054 *ptr = rand() * GOLDEN_RATIO_PRIME;
1055 ptr++;
1056 }
1057 } else
1058 memset(ptr, 0, max_bs);
1059}