blob: e96d495658c7b127b065f92d934f6b76d01cfa3a [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"
9#include "os.h"
10
Jens Axboe5945b9b2007-02-22 20:33:01 +010011/*
12 * Change this define to play with the timeout handling
13 */
14#undef FIO_USE_TIMEOUT
15
Jens Axboe97601022007-02-18 12:47:29 +010016struct io_completion_data {
17 int nr; /* input */
Jens Axboe97601022007-02-18 12:47:29 +010018
19 int error; /* output */
20 unsigned long bytes_done[2]; /* output */
21 struct timeval time; /* output */
22};
23
Jens Axboe10ba5352006-10-20 11:39:27 +020024/*
25 * The ->file_map[] contains a map of blocks we have or have not done io
26 * to yet. Used to make sure we cover the entire range in a fair fashion.
27 */
28static int random_map_free(struct thread_data *td, struct fio_file *f,
29 unsigned long long block)
30{
31 unsigned int idx = RAND_MAP_IDX(td, f, block);
32 unsigned int bit = RAND_MAP_BIT(td, f, block);
33
34 return (f->file_map[idx] & (1UL << bit)) == 0;
35}
36
37/*
Jens Axboedf415582006-10-20 11:41:03 +020038 * Mark a given offset as used in the map.
39 */
Jens Axboe9bf20612007-03-01 09:33:57 +010040static void mark_random_map(struct thread_data *td, struct io_u *io_u)
Jens Axboedf415582006-10-20 11:41:03 +020041{
Jens Axboeafdbe582007-02-10 19:01:57 +010042 unsigned int min_bs = td->rw_min_bs;
Jens Axboe9bf20612007-03-01 09:33:57 +010043 struct fio_file *f = io_u->file;
Jens Axboea00735e2006-11-03 08:58:08 +010044 unsigned long long block;
45 unsigned int blocks;
Jens Axboec685b5b2007-02-10 20:02:28 +010046 unsigned int nr_blocks;
Jens Axboedf415582006-10-20 11:41:03 +020047
Jens Axboea00735e2006-11-03 08:58:08 +010048 block = io_u->offset / (unsigned long long) min_bs;
49 blocks = 0;
Jens Axboec685b5b2007-02-10 20:02:28 +010050 nr_blocks = (io_u->buflen + min_bs - 1) / min_bs;
51
52 while (blocks < nr_blocks) {
Jens Axboedf415582006-10-20 11:41:03 +020053 unsigned int idx, bit;
54
55 if (!random_map_free(td, f, block))
56 break;
57
58 idx = RAND_MAP_IDX(td, f, block);
59 bit = RAND_MAP_BIT(td, f, block);
60
Jens Axboe0032bf92007-02-13 17:39:56 +010061 fio_assert(td, idx < f->num_maps);
Jens Axboedf415582006-10-20 11:41:03 +020062
63 f->file_map[idx] |= (1UL << bit);
64 block++;
65 blocks++;
66 }
67
Jens Axboea00735e2006-11-03 08:58:08 +010068 if ((blocks * min_bs) < io_u->buflen)
69 io_u->buflen = blocks * min_bs;
Jens Axboedf415582006-10-20 11:41:03 +020070}
71
72/*
Jens Axboe10ba5352006-10-20 11:39:27 +020073 * Return the next free block in the map.
74 */
75static int get_next_free_block(struct thread_data *td, struct fio_file *f,
76 unsigned long long *b)
77{
78 int i;
79
Jens Axboec685b5b2007-02-10 20:02:28 +010080 i = f->last_free_lookup;
81 *b = (i * BLOCKS_PER_MAP);
Jens Axboeee884702006-12-20 10:58:07 +010082 while ((*b) * td->rw_min_bs < f->real_file_size) {
Jens Axboe10ba5352006-10-20 11:39:27 +020083 if (f->file_map[i] != -1UL) {
84 *b += ffz(f->file_map[i]);
Jens Axboec685b5b2007-02-10 20:02:28 +010085 f->last_free_lookup = i;
Jens Axboe10ba5352006-10-20 11:39:27 +020086 return 0;
87 }
88
89 *b += BLOCKS_PER_MAP;
90 i++;
91 }
92
93 return 1;
94}
95
96/*
97 * For random io, generate a random new block and see if it's used. Repeat
98 * until we find a free one. For sequential io, just return the end of
99 * the last io issued.
100 */
Jens Axboe9bf20612007-03-01 09:33:57 +0100101static int get_next_offset(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200102{
Jens Axboe9bf20612007-03-01 09:33:57 +0100103 struct fio_file *f = io_u->file;
Jens Axboec685b5b2007-02-10 20:02:28 +0100104 const int ddir = io_u->ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200105 unsigned long long b, rb;
106 long r;
107
Jens Axboe413dd452007-02-23 09:26:09 +0100108 if (td_random(td)) {
Jens Axboef6971252006-11-15 10:00:31 +0100109 unsigned long long max_blocks = f->file_size / td->min_bs[ddir];
Jens Axboee6433572007-03-08 14:02:42 +0100110 int loops = 5;
Jens Axboe10ba5352006-10-20 11:39:27 +0200111
Jens Axboe5afa0d92007-03-13 14:16:08 +0100112 if (!max_blocks)
113 return 1;
114
Jens Axboe10ba5352006-10-20 11:39:27 +0200115 do {
116 r = os_random_long(&td->random_state);
117 b = ((max_blocks - 1) * r / (unsigned long long) (RAND_MAX+1.0));
Jens Axboebb8895e2006-10-30 15:14:48 +0100118 if (td->norandommap)
119 break;
Jens Axboea00735e2006-11-03 08:58:08 +0100120 rb = b + (f->file_offset / td->min_bs[ddir]);
Jens Axboe10ba5352006-10-20 11:39:27 +0200121 loops--;
122 } while (!random_map_free(td, f, rb) && loops);
123
Jens Axboebca4ed42007-02-12 05:13:23 +0100124 /*
125 * if we failed to retrieve a truly random offset within
126 * the loops assigned, see if there are free ones left at all
127 */
128 if (!loops && get_next_free_block(td, f, &b))
129 return 1;
Jens Axboe10ba5352006-10-20 11:39:27 +0200130 } else
Jens Axboea00735e2006-11-03 08:58:08 +0100131 b = f->last_pos / td->min_bs[ddir];
Jens Axboe10ba5352006-10-20 11:39:27 +0200132
Jens Axboec685b5b2007-02-10 20:02:28 +0100133 io_u->offset = (b * td->min_bs[ddir]) + f->file_offset;
Jens Axboebca4ed42007-02-12 05:13:23 +0100134 if (io_u->offset >= f->real_file_size)
Jens Axboe10ba5352006-10-20 11:39:27 +0200135 return 1;
136
137 return 0;
138}
139
Jens Axboe9bf20612007-03-01 09:33:57 +0100140static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200141{
Jens Axboe9bf20612007-03-01 09:33:57 +0100142 struct fio_file *f = io_u->file;
Jens Axboebca4ed42007-02-12 05:13:23 +0100143 const int ddir = io_u->ddir;
Jens Axboe10ba5352006-10-20 11:39:27 +0200144 unsigned int buflen;
145 long r;
146
Jens Axboea00735e2006-11-03 08:58:08 +0100147 if (td->min_bs[ddir] == td->max_bs[ddir])
148 buflen = td->min_bs[ddir];
Jens Axboe10ba5352006-10-20 11:39:27 +0200149 else {
150 r = os_random_long(&td->bsrange_state);
Jens Axboe1e97cce2006-12-05 11:44:16 +0100151 buflen = (unsigned int) (1 + (double) (td->max_bs[ddir] - 1) * r / (RAND_MAX + 1.0));
Jens Axboe690adba2006-10-30 15:25:09 +0100152 if (!td->bs_unaligned)
Jens Axboea00735e2006-11-03 08:58:08 +0100153 buflen = (buflen + td->min_bs[ddir] - 1) & ~(td->min_bs[ddir] - 1);
Jens Axboe10ba5352006-10-20 11:39:27 +0200154 }
155
Jens Axboebca4ed42007-02-12 05:13:23 +0100156 while (buflen + io_u->offset > f->real_file_size) {
Jens Axboebca4ed42007-02-12 05:13:23 +0100157 if (buflen == td->min_bs[ddir])
158 return 0;
159
160 buflen = td->min_bs[ddir];
Jens Axboe10ba5352006-10-20 11:39:27 +0200161 }
162
163 return buflen;
164}
165
166/*
167 * Return the data direction for the next io_u. If the job is a
168 * mixed read/write workload, check the rwmix cycle and switch if
169 * necessary.
170 */
Jens Axboe1e97cce2006-12-05 11:44:16 +0100171static enum fio_ddir get_rw_ddir(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200172{
173 if (td_rw(td)) {
174 struct timeval now;
175 unsigned long elapsed;
176
Jens Axboe02bcaa82006-11-24 10:42:00 +0100177 fio_gettime(&now, NULL);
Jens Axboe10ba5352006-10-20 11:39:27 +0200178 elapsed = mtime_since_now(&td->rwmix_switch);
179
180 /*
181 * Check if it's time to seed a new data direction.
182 */
183 if (elapsed >= td->rwmixcycle) {
184 unsigned int v;
185 long r;
186
187 r = os_random_long(&td->rwmix_state);
188 v = 1 + (int) (100.0 * (r / (RAND_MAX + 1.0)));
189 if (v < td->rwmixread)
190 td->rwmix_ddir = DDIR_READ;
191 else
192 td->rwmix_ddir = DDIR_WRITE;
193 memcpy(&td->rwmix_switch, &now, sizeof(now));
194 }
195 return td->rwmix_ddir;
196 } else if (td_read(td))
197 return DDIR_READ;
198 else
199 return DDIR_WRITE;
200}
201
Jens Axboe10ba5352006-10-20 11:39:27 +0200202void put_io_u(struct thread_data *td, struct io_u *io_u)
203{
Jens Axboe0c6e7512007-02-22 11:19:39 +0100204 assert((io_u->flags & IO_U_F_FREE) == 0);
205 io_u->flags |= IO_U_F_FREE;
206
Jens Axboe10ba5352006-10-20 11:39:27 +0200207 io_u->file = NULL;
208 list_del(&io_u->list);
209 list_add(&io_u->list, &td->io_u_freelist);
210 td->cur_depth--;
211}
212
Jens Axboe755200a2007-02-19 13:08:12 +0100213void requeue_io_u(struct thread_data *td, struct io_u **io_u)
214{
215 struct io_u *__io_u = *io_u;
216
Jens Axboe4d2e0f42007-02-24 13:31:57 +0100217 __io_u->flags |= IO_U_F_FREE;
218 __io_u->flags &= ~IO_U_F_FLIGHT;
219
Jens Axboe755200a2007-02-19 13:08:12 +0100220 list_del(&__io_u->list);
221 list_add_tail(&__io_u->list, &td->io_u_requeues);
222 td->cur_depth--;
223 *io_u = NULL;
224}
225
Jens Axboe9bf20612007-03-01 09:33:57 +0100226static int fill_io_u(struct thread_data *td, struct io_u *io_u)
Jens Axboe10ba5352006-10-20 11:39:27 +0200227{
228 /*
229 * If using an iolog, grab next piece if any available.
230 */
231 if (td->read_iolog)
232 return read_iolog_get(td, io_u);
233
234 /*
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200235 * see if it's time to sync
236 */
Jens Axboe755200a2007-02-19 13:08:12 +0100237 if (td->fsync_blocks && !(td->io_issues[DDIR_WRITE] % td->fsync_blocks)
238 && td->io_issues[DDIR_WRITE] && should_fsync(td)) {
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200239 io_u->ddir = DDIR_SYNC;
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200240 return 0;
241 }
242
Jens Axboea00735e2006-11-03 08:58:08 +0100243 io_u->ddir = get_rw_ddir(td);
244
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200245 /*
Jens Axboec685b5b2007-02-10 20:02:28 +0100246 * No log, let the seq/rand engine retrieve the next buflen and
247 * position.
Jens Axboe10ba5352006-10-20 11:39:27 +0200248 */
Jens Axboe9bf20612007-03-01 09:33:57 +0100249 if (get_next_offset(td, io_u))
Jens Axboebca4ed42007-02-12 05:13:23 +0100250 return 1;
Jens Axboec685b5b2007-02-10 20:02:28 +0100251
Jens Axboe9bf20612007-03-01 09:33:57 +0100252 io_u->buflen = get_next_buflen(td, io_u);
Jens Axboebca4ed42007-02-12 05:13:23 +0100253 if (!io_u->buflen)
254 return 1;
Jens Axboe10ba5352006-10-20 11:39:27 +0200255
Jens Axboebca4ed42007-02-12 05:13:23 +0100256 /*
257 * mark entry before potentially trimming io_u
258 */
Jens Axboe413dd452007-02-23 09:26:09 +0100259 if (!td->read_iolog && td_random(td) && !td->norandommap)
Jens Axboe9bf20612007-03-01 09:33:57 +0100260 mark_random_map(td, io_u);
Jens Axboe10ba5352006-10-20 11:39:27 +0200261
Jens Axboebca4ed42007-02-12 05:13:23 +0100262 /*
263 * If using a write iolog, store this entry.
264 */
265 if (td->write_iolog_file)
266 write_iolog_put(td, io_u);
267
Jens Axboebca4ed42007-02-12 05:13:23 +0100268 return 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200269}
270
Jens Axboeb3605062007-03-12 14:19:47 +0100271void io_u_mark_depth(struct thread_data *td, struct io_u *io_u)
Jens Axboe71619dc2007-01-13 23:56:33 +0100272{
273 int index = 0;
274
Jens Axboeb3605062007-03-12 14:19:47 +0100275 if (io_u->ddir == DDIR_SYNC)
276 return;
277
Jens Axboe71619dc2007-01-13 23:56:33 +0100278 switch (td->cur_depth) {
279 default:
280 index++;
281 case 32 ... 63:
282 index++;
283 case 16 ... 31:
284 index++;
285 case 8 ... 15:
286 index++;
287 case 4 ... 7:
288 index++;
289 case 2 ... 3:
290 index++;
291 case 1:
292 break;
293 }
294
Jens Axboe756867b2007-03-06 15:19:24 +0100295 td->ts.io_u_map[index]++;
Jens Axboeb3605062007-03-12 14:19:47 +0100296 td->ts.total_io_u[io_u->ddir]++;
Jens Axboe71619dc2007-01-13 23:56:33 +0100297}
298
Jens Axboeec118302007-02-17 04:38:20 +0100299static void io_u_mark_latency(struct thread_data *td, unsigned long msec)
300{
301 int index = 0;
302
303 switch (msec) {
304 default:
305 index++;
Jens Axboe8abdce62007-02-21 10:22:55 +0100306 case 1000 ... 1999:
Jens Axboeec118302007-02-17 04:38:20 +0100307 index++;
Jens Axboe8abdce62007-02-21 10:22:55 +0100308 case 750 ... 999:
Jens Axboeec118302007-02-17 04:38:20 +0100309 index++;
Jens Axboe8abdce62007-02-21 10:22:55 +0100310 case 500 ... 749:
Jens Axboeec118302007-02-17 04:38:20 +0100311 index++;
Jens Axboe8abdce62007-02-21 10:22:55 +0100312 case 250 ... 499:
Jens Axboeec118302007-02-17 04:38:20 +0100313 index++;
Jens Axboe8abdce62007-02-21 10:22:55 +0100314 case 100 ... 249:
Jens Axboeec118302007-02-17 04:38:20 +0100315 index++;
Jens Axboe8abdce62007-02-21 10:22:55 +0100316 case 50 ... 99:
Jens Axboeec118302007-02-17 04:38:20 +0100317 index++;
Jens Axboe8abdce62007-02-21 10:22:55 +0100318 case 20 ... 49:
Jens Axboeec118302007-02-17 04:38:20 +0100319 index++;
Jens Axboe8abdce62007-02-21 10:22:55 +0100320 case 10 ... 19:
Jens Axboeec118302007-02-17 04:38:20 +0100321 index++;
Jens Axboe8abdce62007-02-21 10:22:55 +0100322 case 4 ... 9:
Jens Axboeec118302007-02-17 04:38:20 +0100323 index++;
324 case 2 ... 3:
325 index++;
326 case 0 ... 1:
327 break;
328 }
329
Jens Axboe756867b2007-03-06 15:19:24 +0100330 td->ts.io_u_lat[index]++;
Jens Axboeec118302007-02-17 04:38:20 +0100331}
332
Jens Axboe0aabe162007-02-23 08:45:55 +0100333/*
334 * Get next file to service by choosing one at random
335 */
Jens Axboe1c178182007-03-13 13:25:18 +0100336static struct fio_file *get_next_file_rand(struct thread_data *td, int goodf,
337 int badf)
Jens Axboe0aabe162007-02-23 08:45:55 +0100338{
Jens Axboe0aabe162007-02-23 08:45:55 +0100339 struct fio_file *f;
Jens Axboe1c178182007-03-13 13:25:18 +0100340 int fno;
Jens Axboe0aabe162007-02-23 08:45:55 +0100341
342 do {
Jens Axboe7c83c082007-03-01 10:04:15 +0100343 long r = os_random_long(&td->next_file_state);
344
Jens Axboe1c178182007-03-13 13:25:18 +0100345 fno = (unsigned int) ((double) td->nr_files * (r / (RAND_MAX + 1.0)));
346 f = &td->files[fno];
347
348 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
Jens Axboe0aabe162007-02-23 08:45:55 +0100349 return f;
350 } while (1);
351}
352
353/*
354 * Get next file to service by doing round robin between all available ones
355 */
Jens Axboe1c178182007-03-13 13:25:18 +0100356static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf,
357 int badf)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100358{
359 unsigned int old_next_file = td->next_file;
360 struct fio_file *f;
361
362 do {
363 f = &td->files[td->next_file];
364
365 td->next_file++;
Jens Axboe1c178182007-03-13 13:25:18 +0100366 if (td->next_file >= td->nr_files)
Jens Axboe3d7c3912007-02-19 13:16:12 +0100367 td->next_file = 0;
368
Jens Axboe1c178182007-03-13 13:25:18 +0100369 if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
Jens Axboe3d7c3912007-02-19 13:16:12 +0100370 break;
371
372 f = NULL;
373 } while (td->next_file != old_next_file);
374
375 return f;
376}
377
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100378static struct fio_file *get_next_file(struct thread_data *td)
379{
Jens Axboe1907dbc2007-03-12 11:44:28 +0100380 struct fio_file *f;
381
Jens Axboe1c178182007-03-13 13:25:18 +0100382 assert(td->nr_files <= td->files_index);
383
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100384 if (!td->nr_open_files)
385 return NULL;
386
Jens Axboe1907dbc2007-03-12 11:44:28 +0100387 f = td->file_service_file;
Jens Axboef11bd942007-03-13 10:16:34 +0100388 if (f && (f->flags & FIO_FILE_OPEN) && td->file_service_left--)
Jens Axboe1907dbc2007-03-12 11:44:28 +0100389 return f;
390
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100391 if (td->file_service_type == FIO_FSERVICE_RR)
Jens Axboe1c178182007-03-13 13:25:18 +0100392 f = get_next_file_rr(td, FIO_FILE_OPEN, FIO_FILE_CLOSING);
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100393 else
Jens Axboe1c178182007-03-13 13:25:18 +0100394 f = get_next_file_rand(td, FIO_FILE_OPEN, FIO_FILE_CLOSING);
Jens Axboe1907dbc2007-03-12 11:44:28 +0100395
396 td->file_service_file = f;
397 td->file_service_left = td->file_service_nr - 1;
398 return f;
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100399}
400
Jens Axboe1c178182007-03-13 13:25:18 +0100401static struct fio_file *find_next_new_file(struct thread_data *td)
402{
403 struct fio_file *f;
404
405 if (td->file_service_type == FIO_FSERVICE_RR)
406 f = get_next_file_rr(td, 0, FIO_FILE_OPEN);
407 else
408 f = get_next_file_rand(td, 0, FIO_FILE_OPEN);
409
410 return f;
411}
412
Jens Axboe10ba5352006-10-20 11:39:27 +0200413struct io_u *__get_io_u(struct thread_data *td)
414{
415 struct io_u *io_u = NULL;
416
Jens Axboe755200a2007-02-19 13:08:12 +0100417 if (!list_empty(&td->io_u_requeues))
418 io_u = list_entry(td->io_u_requeues.next, struct io_u, list);
419 else if (!queue_full(td)) {
Jens Axboe10ba5352006-10-20 11:39:27 +0200420 io_u = list_entry(td->io_u_freelist.next, struct io_u, list);
421
Jens Axboe6040dab2006-10-24 19:38:15 +0200422 io_u->buflen = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200423 io_u->resid = 0;
Jens Axboe755200a2007-02-19 13:08:12 +0100424 io_u->file = NULL;
Jens Axboed7762cf2007-02-23 12:34:57 +0100425 io_u->end_io = NULL;
Jens Axboe755200a2007-02-19 13:08:12 +0100426 }
427
428 if (io_u) {
Jens Axboe0c6e7512007-02-22 11:19:39 +0100429 assert(io_u->flags & IO_U_F_FREE);
430 io_u->flags &= ~IO_U_F_FREE;
431
Jens Axboe755200a2007-02-19 13:08:12 +0100432 io_u->error = 0;
Jens Axboe10ba5352006-10-20 11:39:27 +0200433 list_del(&io_u->list);
434 list_add(&io_u->list, &td->io_u_busylist);
435 td->cur_depth++;
436 }
437
438 return io_u;
439}
440
441/*
442 * Return an io_u to be processed. Gets a buflen and offset, sets direction,
443 * etc. The returned io_u is fully ready to be prepped and submitted.
444 */
Jens Axboe3d7c3912007-02-19 13:16:12 +0100445struct io_u *get_io_u(struct thread_data *td)
Jens Axboe10ba5352006-10-20 11:39:27 +0200446{
Jens Axboe3d7c3912007-02-19 13:16:12 +0100447 struct fio_file *f;
Jens Axboe10ba5352006-10-20 11:39:27 +0200448 struct io_u *io_u;
Jens Axboe1c178182007-03-13 13:25:18 +0100449 int ret;
Jens Axboe10ba5352006-10-20 11:39:27 +0200450
451 io_u = __get_io_u(td);
452 if (!io_u)
453 return NULL;
454
Jens Axboe755200a2007-02-19 13:08:12 +0100455 /*
456 * from a requeue, io_u already setup
457 */
458 if (io_u->file)
Jens Axboe77f392b2007-02-19 20:13:09 +0100459 goto out;
Jens Axboe755200a2007-02-19 13:08:12 +0100460
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100461 do {
462 f = get_next_file(td);
463 if (!f) {
464 put_io_u(td, io_u);
465 return NULL;
466 }
Jens Axboe0aabe162007-02-23 08:45:55 +0100467
Jens Axboe1c178182007-03-13 13:25:18 +0100468set_file:
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100469 io_u->file = f;
Jens Axboe3d7c3912007-02-19 13:16:12 +0100470
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100471 if (!fill_io_u(td, io_u))
472 break;
Jens Axboe3d7c3912007-02-19 13:16:12 +0100473
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100474 /*
475 * No more to do for this file, close it
476 */
477 io_u->file = NULL;
Jens Axboeb5af8292007-03-08 12:43:13 +0100478 td_io_close_file(td, f);
479
480 /*
481 * probably not the right place to do this, but see
482 * if we need to open a new file
483 */
484 if (td->nr_open_files < td->nr_files &&
Jens Axboea978ba62007-03-08 14:29:03 +0100485 td->open_files != td->nr_files) {
Jens Axboe1c178182007-03-13 13:25:18 +0100486 f = find_next_new_file(td);
Jens Axboea978ba62007-03-08 14:29:03 +0100487
Jens Axboe1c178182007-03-13 13:25:18 +0100488 if (!f || (ret = td_io_open_file(td, f))) {
Jens Axboea978ba62007-03-08 14:29:03 +0100489 put_io_u(td, io_u);
Jens Axboee291dc12007-03-13 21:50:34 +0100490 return NULL;
Jens Axboea978ba62007-03-08 14:29:03 +0100491 }
Jens Axboe1c178182007-03-13 13:25:18 +0100492 goto set_file;
Jens Axboea978ba62007-03-08 14:29:03 +0100493 }
Jens Axboebdb4e2e2007-03-01 09:54:57 +0100494 } while (1);
Jens Axboe9bf20612007-03-01 09:33:57 +0100495
Jens Axboe10ba5352006-10-20 11:39:27 +0200496 if (td->zone_bytes >= td->zone_size) {
497 td->zone_bytes = 0;
498 f->last_pos += td->zone_skip;
499 }
500
Jens Axboeee884702006-12-20 10:58:07 +0100501 if (io_u->buflen + io_u->offset > f->real_file_size) {
Jens Axboe10ba5352006-10-20 11:39:27 +0200502 if (td->io_ops->flags & FIO_RAWIO) {
503 put_io_u(td, io_u);
504 return NULL;
505 }
506
Jens Axboeee884702006-12-20 10:58:07 +0100507 io_u->buflen = f->real_file_size - io_u->offset;
Jens Axboe10ba5352006-10-20 11:39:27 +0200508 }
509
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200510 if (io_u->ddir != DDIR_SYNC) {
511 if (!io_u->buflen) {
512 put_io_u(td, io_u);
513 return NULL;
514 }
515
Jens Axboe36167d82007-02-18 05:41:31 +0100516 f->last_pos = io_u->offset + io_u->buflen;
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200517
518 if (td->verify != VERIFY_NONE)
519 populate_verify_io_u(td, io_u);
Jens Axboe10ba5352006-10-20 11:39:27 +0200520 }
521
Jens Axboe165faf12007-02-07 11:30:37 +0100522 /*
523 * Set io data pointers.
524 */
Jens Axboe77f392b2007-02-19 20:13:09 +0100525out:
Jens Axboecec6b552007-02-06 20:15:38 +0100526 io_u->xfer_buf = io_u->buf;
527 io_u->xfer_buflen = io_u->buflen;
Jens Axboe165faf12007-02-07 11:30:37 +0100528
Jens Axboe36167d82007-02-18 05:41:31 +0100529 if (td_io_prep(td, io_u)) {
530 put_io_u(td, io_u);
531 return NULL;
532 }
533
Jens Axboe02bcaa82006-11-24 10:42:00 +0100534 fio_gettime(&io_u->start_time, NULL);
Jens Axboe10ba5352006-10-20 11:39:27 +0200535 return io_u;
536}
537
Jens Axboe54517922007-03-05 10:06:06 +0100538void io_u_log_error(struct thread_data *td, struct io_u *io_u)
539{
540 const char *msg[] = { "read", "write", "sync" };
541
542 log_err("fio: io_u error");
543
544 if (io_u->file)
545 log_err(" on file %s", io_u->file->file_name);
546
547 log_err(": %s\n", strerror(io_u->error));
548
549 log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir], io_u->offset, io_u->xfer_buflen);
550
551 if (!td->error)
552 td_verror(td, io_u->error, "io_u error");
553}
554
Jens Axboe97601022007-02-18 12:47:29 +0100555static void io_completed(struct thread_data *td, struct io_u *io_u,
556 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +0200557{
Jens Axboe10ba5352006-10-20 11:39:27 +0200558 unsigned long msec;
559
Jens Axboe0c6e7512007-02-22 11:19:39 +0100560 assert(io_u->flags & IO_U_F_FLIGHT);
561 io_u->flags &= ~IO_U_F_FLIGHT;
562
Jens Axboe0ad920e2007-03-13 11:06:45 +0100563 put_file(td, io_u->file);
564
Jens Axboe87dc1ab2006-10-24 14:41:26 +0200565 if (io_u->ddir == DDIR_SYNC) {
566 td->last_was_sync = 1;
567 return;
568 }
569
570 td->last_was_sync = 0;
571
Jens Axboe10ba5352006-10-20 11:39:27 +0200572 if (!io_u->error) {
573 unsigned int bytes = io_u->buflen - io_u->resid;
Jens Axboe1e97cce2006-12-05 11:44:16 +0100574 const enum fio_ddir idx = io_u->ddir;
Jens Axboe3af6ef32007-02-18 06:57:43 +0100575 int ret;
Jens Axboe10ba5352006-10-20 11:39:27 +0200576
577 td->io_blocks[idx]++;
578 td->io_bytes[idx] += bytes;
579 td->zone_bytes += bytes;
580 td->this_io_bytes[idx] += bytes;
581
Jens Axboe02bcaa82006-11-24 10:42:00 +0100582 io_u->file->last_completed_pos = io_u->offset + io_u->buflen;
583
584 msec = mtime_since(&io_u->issue_time, &icd->time);
Jens Axboe10ba5352006-10-20 11:39:27 +0200585
586 add_clat_sample(td, idx, msec);
Jens Axboe02bcaa82006-11-24 10:42:00 +0100587 add_bw_sample(td, idx, &icd->time);
Jens Axboeec118302007-02-17 04:38:20 +0100588 io_u_mark_latency(td, msec);
Jens Axboe10ba5352006-10-20 11:39:27 +0200589
590 if ((td_rw(td) || td_write(td)) && idx == DDIR_WRITE)
591 log_io_piece(td, io_u);
592
593 icd->bytes_done[idx] += bytes;
Jens Axboe3af6ef32007-02-18 06:57:43 +0100594
Jens Axboed7762cf2007-02-23 12:34:57 +0100595 if (io_u->end_io) {
596 ret = io_u->end_io(io_u);
Jens Axboe3af6ef32007-02-18 06:57:43 +0100597 if (ret && !icd->error)
598 icd->error = ret;
599 }
Jens Axboe54517922007-03-05 10:06:06 +0100600 } else {
Jens Axboe10ba5352006-10-20 11:39:27 +0200601 icd->error = io_u->error;
Jens Axboe54517922007-03-05 10:06:06 +0100602 io_u_log_error(td, io_u);
603 }
Jens Axboe10ba5352006-10-20 11:39:27 +0200604}
605
Jens Axboed7762cf2007-02-23 12:34:57 +0100606static void init_icd(struct io_completion_data *icd, int nr)
Jens Axboe36167d82007-02-18 05:41:31 +0100607{
608 fio_gettime(&icd->time, NULL);
609
Jens Axboe3af6ef32007-02-18 06:57:43 +0100610 icd->nr = nr;
611
Jens Axboe36167d82007-02-18 05:41:31 +0100612 icd->error = 0;
613 icd->bytes_done[0] = icd->bytes_done[1] = 0;
614}
615
Jens Axboe97601022007-02-18 12:47:29 +0100616static void ios_completed(struct thread_data *td,
617 struct io_completion_data *icd)
Jens Axboe10ba5352006-10-20 11:39:27 +0200618{
619 struct io_u *io_u;
620 int i;
621
Jens Axboe10ba5352006-10-20 11:39:27 +0200622 for (i = 0; i < icd->nr; i++) {
623 io_u = td->io_ops->event(td, i);
624
625 io_completed(td, io_u, icd);
626 put_io_u(td, io_u);
627 }
628}
Jens Axboe97601022007-02-18 12:47:29 +0100629
Jens Axboee7e6cfb2007-02-20 10:58:34 +0100630/*
631 * Complete a single io_u for the sync engines.
632 */
Jens Axboed7762cf2007-02-23 12:34:57 +0100633long io_u_sync_complete(struct thread_data *td, struct io_u *io_u)
Jens Axboe97601022007-02-18 12:47:29 +0100634{
635 struct io_completion_data icd;
636
Jens Axboed7762cf2007-02-23 12:34:57 +0100637 init_icd(&icd, 1);
Jens Axboe97601022007-02-18 12:47:29 +0100638 io_completed(td, io_u, &icd);
639 put_io_u(td, io_u);
640
641 if (!icd.error)
642 return icd.bytes_done[0] + icd.bytes_done[1];
643
Jens Axboe37e974a2007-03-02 15:16:45 +0100644 td_verror(td, icd.error, "io_u_sync_complete");
Jens Axboe97601022007-02-18 12:47:29 +0100645 return -1;
646}
647
Jens Axboee7e6cfb2007-02-20 10:58:34 +0100648/*
649 * Called to complete min_events number of io for the async engines.
650 */
Jens Axboed7762cf2007-02-23 12:34:57 +0100651long io_u_queued_complete(struct thread_data *td, int min_events)
Jens Axboe97601022007-02-18 12:47:29 +0100652{
Jens Axboe97601022007-02-18 12:47:29 +0100653 struct io_completion_data icd;
Jens Axboe00de55e2007-02-20 10:45:57 +0100654 struct timespec *tvp = NULL;
Jens Axboe97601022007-02-18 12:47:29 +0100655 int ret;
656
Jens Axboeface81b2007-02-26 10:40:03 +0100657 if (!min_events) {
Jens Axboe00de55e2007-02-20 10:45:57 +0100658 struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, };
659
660 tvp = &ts;
Jens Axboe755200a2007-02-19 13:08:12 +0100661 }
Jens Axboe97601022007-02-18 12:47:29 +0100662
Jens Axboe00de55e2007-02-20 10:45:57 +0100663 ret = td_io_getevents(td, min_events, td->cur_depth, tvp);
Jens Axboe97601022007-02-18 12:47:29 +0100664 if (ret < 0) {
Jens Axboee1161c32007-02-22 19:36:48 +0100665 td_verror(td, -ret, "td_io_getevents");
Jens Axboe97601022007-02-18 12:47:29 +0100666 return ret;
667 } else if (!ret)
668 return ret;
669
Jens Axboed7762cf2007-02-23 12:34:57 +0100670 init_icd(&icd, ret);
Jens Axboe97601022007-02-18 12:47:29 +0100671 ios_completed(td, &icd);
672 if (!icd.error)
673 return icd.bytes_done[0] + icd.bytes_done[1];
674
Jens Axboe37e974a2007-03-02 15:16:45 +0100675 td_verror(td, icd.error, "io_u_queued_complete");
Jens Axboe97601022007-02-18 12:47:29 +0100676 return -1;
677}
Jens Axboe7e77dd02007-02-20 10:57:34 +0100678
679/*
680 * Call when io_u is really queued, to update the submission latency.
681 */
682void io_u_queued(struct thread_data *td, struct io_u *io_u)
683{
684 unsigned long slat_time;
685
686 slat_time = mtime_since(&io_u->start_time, &io_u->issue_time);
687 add_slat_sample(td, io_u->ddir, slat_time);
688}
Jens Axboe433afcb2007-02-22 10:39:01 +0100689
Jens Axboe55bc9722007-02-22 11:30:05 +0100690#ifdef FIO_USE_TIMEOUT
Jens Axboe433afcb2007-02-22 10:39:01 +0100691void io_u_set_timeout(struct thread_data *td)
692{
693 assert(td->cur_depth);
694
695 td->timer.it_interval.tv_sec = 0;
696 td->timer.it_interval.tv_usec = 0;
697 td->timer.it_value.tv_sec = IO_U_TIMEOUT + IO_U_TIMEOUT_INC;
698 td->timer.it_value.tv_usec = 0;
699 setitimer(ITIMER_REAL, &td->timer, NULL);
700 fio_gettime(&td->timeout_end, NULL);
701}
Jens Axboe5945b9b2007-02-22 20:33:01 +0100702
703static void io_u_dump(struct io_u *io_u)
704{
705 unsigned long t_start = mtime_since_now(&io_u->start_time);
706 unsigned long t_issue = mtime_since_now(&io_u->issue_time);
707
708 log_err("io_u=%p, t_start=%lu, t_issue=%lu\n", io_u, t_start, t_issue);
709 log_err(" buf=%p/%p, len=%lu/%lu, offset=%llu\n", io_u->buf, io_u->xfer_buf, io_u->buflen, io_u->xfer_buflen, io_u->offset);
710 log_err(" ddir=%d, fname=%s\n", io_u->ddir, io_u->file->file_name);
711}
Jens Axboe55bc9722007-02-22 11:30:05 +0100712#else
713void io_u_set_timeout(struct thread_data fio_unused *td)
714{
715}
716#endif
Jens Axboe433afcb2007-02-22 10:39:01 +0100717
Jens Axboe55bc9722007-02-22 11:30:05 +0100718#ifdef FIO_USE_TIMEOUT
Jens Axboe433afcb2007-02-22 10:39:01 +0100719static void io_u_timeout_handler(int fio_unused sig)
720{
721 struct thread_data *td, *__td;
722 pid_t pid = getpid();
Jens Axboe5945b9b2007-02-22 20:33:01 +0100723 struct list_head *entry;
724 struct io_u *io_u;
Jens Axboe433afcb2007-02-22 10:39:01 +0100725 int i;
726
727 log_err("fio: io_u timeout\n");
728
729 /*
730 * TLS would be nice...
731 */
732 td = NULL;
733 for_each_td(__td, i) {
734 if (__td->pid == pid) {
735 td = __td;
736 break;
737 }
738 }
739
740 if (!td) {
741 log_err("fio: io_u timeout, can't find job\n");
742 exit(1);
743 }
744
745 if (!td->cur_depth) {
746 log_err("fio: timeout without pending work?\n");
747 return;
748 }
749
750 log_err("fio: io_u timeout: job=%s, pid=%d\n", td->name, td->pid);
Jens Axboe5945b9b2007-02-22 20:33:01 +0100751
752 list_for_each(entry, &td->io_u_busylist) {
753 io_u = list_entry(entry, struct io_u, list);
754
755 io_u_dump(io_u);
756 }
757
758 td_verror(td, ETIMEDOUT, "io_u timeout");
Jens Axboe433afcb2007-02-22 10:39:01 +0100759 exit(1);
760}
Jens Axboe55bc9722007-02-22 11:30:05 +0100761#endif
Jens Axboe433afcb2007-02-22 10:39:01 +0100762
763void io_u_init_timeout(void)
764{
Jens Axboe55bc9722007-02-22 11:30:05 +0100765#ifdef FIO_USE_TIMEOUT
Jens Axboe433afcb2007-02-22 10:39:01 +0100766 signal(SIGALRM, io_u_timeout_handler);
Jens Axboe55bc9722007-02-22 11:30:05 +0100767#endif
Jens Axboe433afcb2007-02-22 10:39:01 +0100768}