Commit | Line | Data |
---|---|---|
2866c82d | 1 | /* |
a31041ea | 2 | * sync/psync engine |
da751ca9 JA |
3 | * |
4 | * IO engine that does regular read(2)/write(2) with lseek(2) to transfer | |
a31041ea | 5 | * data and IO engine that does regular pread(2)/pwrite(2) to transfer data. |
2866c82d JA |
6 | * |
7 | */ | |
8 | #include <stdio.h> | |
9 | #include <stdlib.h> | |
10 | #include <unistd.h> | |
5921e80c | 11 | #include <sys/uio.h> |
2866c82d JA |
12 | #include <errno.h> |
13 | #include <assert.h> | |
5f350952 JA |
14 | |
15 | #include "../fio.h" | |
2cafffbe | 16 | #include "../optgroup.h" |
a0679ce5 | 17 | #include "../lib/rand.h" |
2866c82d | 18 | |
ef5f5a3a JA |
19 | /* |
20 | * Sync engine uses engine_data to store last offset | |
21 | */ | |
710bf9c5 | 22 | #define LAST_POS(f) ((f)->engine_pos) |
ef5f5a3a | 23 | |
1d2af02a JA |
24 | struct syncio_data { |
25 | struct iovec *iovecs; | |
26 | struct io_u **io_us; | |
27 | unsigned int queued; | |
e51cf72c | 28 | unsigned int events; |
1d2af02a JA |
29 | unsigned long queued_bytes; |
30 | ||
31 | unsigned long long last_offset; | |
32 | struct fio_file *last_file; | |
33 | enum fio_ddir last_ddir; | |
a0679ce5 SB |
34 | |
35 | struct frand_state rand_state; | |
1d2af02a JA |
36 | }; |
37 | ||
6562685f | 38 | #ifdef FIO_HAVE_PWRITEV2 |
2cafffbe JA |
39 | struct psyncv2_options { |
40 | void *pad; | |
41 | unsigned int hipri; | |
a0679ce5 | 42 | unsigned int hipri_percentage; |
2cafffbe JA |
43 | }; |
44 | ||
45 | static struct fio_option options[] = { | |
46 | { | |
47 | .name = "hipri", | |
48 | .lname = "RWF_HIPRI", | |
49 | .type = FIO_OPT_STR_SET, | |
50 | .off1 = offsetof(struct psyncv2_options, hipri), | |
51 | .help = "Set RWF_HIPRI for pwritev2/preadv2", | |
52 | .category = FIO_OPT_C_ENGINE, | |
53 | .group = FIO_OPT_G_INVALID, | |
54 | }, | |
a0679ce5 SB |
55 | { |
56 | .name = "hipri_percentage", | |
57 | .lname = "RWF_HIPRI_PERCENTAGE", | |
58 | .type = FIO_OPT_INT, | |
59 | .off1 = offsetof(struct psyncv2_options, hipri_percentage), | |
60 | .minval = 0, | |
61 | .maxval = 100, | |
62 | .def = "100", | |
63 | .help = "Probabilistically set RWF_HIPRI for pwritev2/preadv2", | |
64 | .category = FIO_OPT_C_ENGINE, | |
65 | .group = FIO_OPT_G_INVALID, | |
66 | }, | |
2cafffbe JA |
67 | { |
68 | .name = NULL, | |
69 | }, | |
70 | }; | |
71 | #endif | |
72 | ||
2866c82d JA |
73 | static int fio_syncio_prep(struct thread_data *td, struct io_u *io_u) |
74 | { | |
53cdc686 JA |
75 | struct fio_file *f = io_u->file; |
76 | ||
ff58fced | 77 | if (!ddir_rw(io_u->ddir)) |
87dc1ab1 JA |
78 | return 0; |
79 | ||
ef5f5a3a | 80 | if (LAST_POS(f) != -1ULL && LAST_POS(f) == io_u->offset) |
e943b878 JA |
81 | return 0; |
82 | ||
53cdc686 | 83 | if (lseek(f->fd, io_u->offset, SEEK_SET) == -1) { |
e1161c32 | 84 | td_verror(td, errno, "lseek"); |
2866c82d JA |
85 | return 1; |
86 | } | |
87 | ||
88 | return 0; | |
89 | } | |
90 | ||
2bd3eabc | 91 | static int fio_io_end(struct thread_data *td, struct io_u *io_u, int ret) |
2866c82d | 92 | { |
ff58fced | 93 | if (io_u->file && ret >= 0 && ddir_rw(io_u->ddir)) |
ef5f5a3a | 94 | LAST_POS(io_u->file) = io_u->offset + ret; |
e943b878 | 95 | |
cec6b55d | 96 | if (ret != (int) io_u->xfer_buflen) { |
22819ec2 | 97 | if (ret >= 0) { |
cec6b55d JA |
98 | io_u->resid = io_u->xfer_buflen - ret; |
99 | io_u->error = 0; | |
36167d82 | 100 | return FIO_Q_COMPLETED; |
2866c82d JA |
101 | } else |
102 | io_u->error = errno; | |
103 | } | |
104 | ||
bfd197cb JA |
105 | if (io_u->error) { |
106 | io_u_log_error(td, io_u); | |
e1161c32 | 107 | td_verror(td, io_u->error, "xfer"); |
bfd197cb | 108 | } |
2866c82d | 109 | |
36167d82 | 110 | return FIO_Q_COMPLETED; |
2866c82d JA |
111 | } |
112 | ||
07fc0acd JA |
113 | #ifdef CONFIG_PWRITEV |
114 | static int fio_pvsyncio_queue(struct thread_data *td, struct io_u *io_u) | |
115 | { | |
565e784d | 116 | struct syncio_data *sd = td->io_ops_data; |
07fc0acd JA |
117 | struct iovec *iov = &sd->iovecs[0]; |
118 | struct fio_file *f = io_u->file; | |
119 | int ret; | |
120 | ||
121 | fio_ro_check(td, io_u); | |
122 | ||
123 | iov->iov_base = io_u->xfer_buf; | |
124 | iov->iov_len = io_u->xfer_buflen; | |
125 | ||
126 | if (io_u->ddir == DDIR_READ) | |
127 | ret = preadv(f->fd, iov, 1, io_u->offset); | |
128 | else if (io_u->ddir == DDIR_WRITE) | |
129 | ret = pwritev(f->fd, iov, 1, io_u->offset); | |
130 | else if (io_u->ddir == DDIR_TRIM) { | |
131 | do_io_u_trim(td, io_u); | |
132 | return FIO_Q_COMPLETED; | |
133 | } else | |
134 | ret = do_io_u_sync(td, io_u); | |
135 | ||
136 | return fio_io_end(td, io_u, ret); | |
137 | } | |
138 | #endif | |
139 | ||
6562685f | 140 | #ifdef FIO_HAVE_PWRITEV2 |
2cafffbe JA |
141 | static int fio_pvsyncio2_queue(struct thread_data *td, struct io_u *io_u) |
142 | { | |
565e784d | 143 | struct syncio_data *sd = td->io_ops_data; |
2cafffbe JA |
144 | struct psyncv2_options *o = td->eo; |
145 | struct iovec *iov = &sd->iovecs[0]; | |
146 | struct fio_file *f = io_u->file; | |
147 | int ret, flags = 0; | |
148 | ||
149 | fio_ro_check(td, io_u); | |
150 | ||
a0679ce5 SB |
151 | if (o->hipri && |
152 | (rand32_between(&sd->rand_state, 1, 100) <= o->hipri_percentage)) | |
2cafffbe JA |
153 | flags |= RWF_HIPRI; |
154 | ||
155 | iov->iov_base = io_u->xfer_buf; | |
156 | iov->iov_len = io_u->xfer_buflen; | |
157 | ||
158 | if (io_u->ddir == DDIR_READ) | |
159 | ret = preadv2(f->fd, iov, 1, io_u->offset, flags); | |
160 | else if (io_u->ddir == DDIR_WRITE) | |
161 | ret = pwritev2(f->fd, iov, 1, io_u->offset, flags); | |
162 | else if (io_u->ddir == DDIR_TRIM) { | |
163 | do_io_u_trim(td, io_u); | |
164 | return FIO_Q_COMPLETED; | |
165 | } else | |
166 | ret = do_io_u_sync(td, io_u); | |
167 | ||
168 | return fio_io_end(td, io_u, ret); | |
169 | } | |
170 | #endif | |
171 | ||
172 | ||
2bd3eabc | 173 | static int fio_psyncio_queue(struct thread_data *td, struct io_u *io_u) |
a31041ea | 174 | { |
2bd3eabc JA |
175 | struct fio_file *f = io_u->file; |
176 | int ret; | |
177 | ||
178 | fio_ro_check(td, io_u); | |
179 | ||
180 | if (io_u->ddir == DDIR_READ) | |
181 | ret = pread(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); | |
182 | else if (io_u->ddir == DDIR_WRITE) | |
183 | ret = pwrite(f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); | |
6eaf09d6 SL |
184 | else if (io_u->ddir == DDIR_TRIM) { |
185 | do_io_u_trim(td, io_u); | |
186 | return FIO_Q_COMPLETED; | |
187 | } else | |
0a28ecda | 188 | ret = do_io_u_sync(td, io_u); |
2bd3eabc JA |
189 | |
190 | return fio_io_end(td, io_u, ret); | |
191 | } | |
192 | ||
193 | static int fio_syncio_queue(struct thread_data *td, struct io_u *io_u) | |
194 | { | |
195 | struct fio_file *f = io_u->file; | |
196 | int ret; | |
197 | ||
198 | fio_ro_check(td, io_u); | |
199 | ||
200 | if (io_u->ddir == DDIR_READ) | |
201 | ret = read(f->fd, io_u->xfer_buf, io_u->xfer_buflen); | |
202 | else if (io_u->ddir == DDIR_WRITE) | |
203 | ret = write(f->fd, io_u->xfer_buf, io_u->xfer_buflen); | |
6eaf09d6 SL |
204 | else if (io_u->ddir == DDIR_TRIM) { |
205 | do_io_u_trim(td, io_u); | |
206 | return FIO_Q_COMPLETED; | |
207 | } else | |
0a28ecda | 208 | ret = do_io_u_sync(td, io_u); |
2bd3eabc JA |
209 | |
210 | return fio_io_end(td, io_u, ret); | |
a31041ea | 211 | } |
212 | ||
1d2af02a JA |
213 | static int fio_vsyncio_getevents(struct thread_data *td, unsigned int min, |
214 | unsigned int max, | |
1f440ece | 215 | const struct timespec fio_unused *t) |
1d2af02a | 216 | { |
565e784d | 217 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
218 | int ret; |
219 | ||
220 | if (min) { | |
e51cf72c JA |
221 | ret = sd->events; |
222 | sd->events = 0; | |
1d2af02a JA |
223 | } else |
224 | ret = 0; | |
225 | ||
226 | dprint(FD_IO, "vsyncio_getevents: min=%d,max=%d: %d\n", min, max, ret); | |
227 | return ret; | |
228 | } | |
229 | ||
230 | static struct io_u *fio_vsyncio_event(struct thread_data *td, int event) | |
231 | { | |
565e784d | 232 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
233 | |
234 | return sd->io_us[event]; | |
235 | } | |
236 | ||
237 | static int fio_vsyncio_append(struct thread_data *td, struct io_u *io_u) | |
238 | { | |
565e784d | 239 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a | 240 | |
5f9099ea | 241 | if (ddir_sync(io_u->ddir)) |
1d2af02a JA |
242 | return 0; |
243 | ||
244 | if (io_u->offset == sd->last_offset && io_u->file == sd->last_file && | |
245 | io_u->ddir == sd->last_ddir) | |
246 | return 1; | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | static void fio_vsyncio_set_iov(struct syncio_data *sd, struct io_u *io_u, | |
2b13e716 | 252 | int idx) |
1d2af02a | 253 | { |
2b13e716 JA |
254 | sd->io_us[idx] = io_u; |
255 | sd->iovecs[idx].iov_base = io_u->xfer_buf; | |
256 | sd->iovecs[idx].iov_len = io_u->xfer_buflen; | |
1d2af02a JA |
257 | sd->last_offset = io_u->offset + io_u->xfer_buflen; |
258 | sd->last_file = io_u->file; | |
259 | sd->last_ddir = io_u->ddir; | |
260 | sd->queued_bytes += io_u->xfer_buflen; | |
261 | sd->queued++; | |
262 | } | |
263 | ||
264 | static int fio_vsyncio_queue(struct thread_data *td, struct io_u *io_u) | |
265 | { | |
565e784d | 266 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
267 | |
268 | fio_ro_check(td, io_u); | |
269 | ||
270 | if (!fio_vsyncio_append(td, io_u)) { | |
271 | dprint(FD_IO, "vsyncio_queue: no append (%d)\n", sd->queued); | |
272 | /* | |
273 | * If we can't append and have stuff queued, tell fio to | |
274 | * commit those first and then retry this io | |
275 | */ | |
276 | if (sd->queued) | |
277 | return FIO_Q_BUSY; | |
0a28ecda JA |
278 | if (ddir_sync(io_u->ddir)) { |
279 | int ret = do_io_u_sync(td, io_u); | |
280 | ||
281 | return fio_io_end(td, io_u, ret); | |
282 | } | |
cc9159c3 | 283 | |
1d2af02a JA |
284 | sd->queued = 0; |
285 | sd->queued_bytes = 0; | |
286 | fio_vsyncio_set_iov(sd, io_u, 0); | |
287 | } else { | |
288 | if (sd->queued == td->o.iodepth) { | |
289 | dprint(FD_IO, "vsyncio_queue: max depth %d\n", sd->queued); | |
290 | return FIO_Q_BUSY; | |
291 | } | |
292 | ||
293 | dprint(FD_IO, "vsyncio_queue: append\n"); | |
294 | fio_vsyncio_set_iov(sd, io_u, sd->queued); | |
295 | } | |
296 | ||
297 | dprint(FD_IO, "vsyncio_queue: depth now %d\n", sd->queued); | |
298 | return FIO_Q_QUEUED; | |
299 | } | |
300 | ||
301 | /* | |
302 | * Check that we transferred all bytes, or saw an error, etc | |
303 | */ | |
304 | static int fio_vsyncio_end(struct thread_data *td, ssize_t bytes) | |
305 | { | |
565e784d | 306 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
307 | struct io_u *io_u; |
308 | unsigned int i; | |
309 | int err; | |
310 | ||
311 | /* | |
312 | * transferred everything, perfect | |
313 | */ | |
314 | if (bytes == sd->queued_bytes) | |
315 | return 0; | |
316 | ||
317 | err = errno; | |
318 | for (i = 0; i < sd->queued; i++) { | |
319 | io_u = sd->io_us[i]; | |
320 | ||
321 | if (bytes == -1) { | |
322 | io_u->error = err; | |
323 | } else { | |
324 | unsigned int this_io; | |
325 | ||
326 | this_io = bytes; | |
327 | if (this_io > io_u->xfer_buflen) | |
328 | this_io = io_u->xfer_buflen; | |
329 | ||
330 | io_u->resid = io_u->xfer_buflen - this_io; | |
331 | io_u->error = 0; | |
332 | bytes -= this_io; | |
333 | } | |
334 | } | |
335 | ||
336 | if (bytes == -1) { | |
337 | td_verror(td, err, "xfer vsync"); | |
338 | return -err; | |
339 | } | |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
344 | static int fio_vsyncio_commit(struct thread_data *td) | |
345 | { | |
565e784d | 346 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a JA |
347 | struct fio_file *f; |
348 | ssize_t ret; | |
349 | ||
350 | if (!sd->queued) | |
351 | return 0; | |
352 | ||
838bc709 | 353 | io_u_mark_submit(td, sd->queued); |
1d2af02a JA |
354 | f = sd->last_file; |
355 | ||
356 | if (lseek(f->fd, sd->io_us[0]->offset, SEEK_SET) == -1) { | |
357 | int err = -errno; | |
358 | ||
359 | td_verror(td, errno, "lseek"); | |
360 | return err; | |
361 | } | |
362 | ||
363 | if (sd->last_ddir == DDIR_READ) | |
364 | ret = readv(f->fd, sd->iovecs, sd->queued); | |
365 | else | |
366 | ret = writev(f->fd, sd->iovecs, sd->queued); | |
367 | ||
368 | dprint(FD_IO, "vsyncio_commit: %d\n", (int) ret); | |
e51cf72c JA |
369 | sd->events = sd->queued; |
370 | sd->queued = 0; | |
1d2af02a JA |
371 | return fio_vsyncio_end(td, ret); |
372 | } | |
373 | ||
374 | static int fio_vsyncio_init(struct thread_data *td) | |
375 | { | |
376 | struct syncio_data *sd; | |
377 | ||
378 | sd = malloc(sizeof(*sd)); | |
379 | memset(sd, 0, sizeof(*sd)); | |
380 | sd->last_offset = -1ULL; | |
381 | sd->iovecs = malloc(td->o.iodepth * sizeof(struct iovec)); | |
382 | sd->io_us = malloc(td->o.iodepth * sizeof(struct io_u *)); | |
a0679ce5 | 383 | init_rand(&sd->rand_state, 0); |
1d2af02a | 384 | |
565e784d | 385 | td->io_ops_data = sd; |
1d2af02a JA |
386 | return 0; |
387 | } | |
388 | ||
389 | static void fio_vsyncio_cleanup(struct thread_data *td) | |
390 | { | |
565e784d | 391 | struct syncio_data *sd = td->io_ops_data; |
1d2af02a | 392 | |
02a3d83f TK |
393 | if (sd) { |
394 | free(sd->iovecs); | |
395 | free(sd->io_us); | |
396 | free(sd); | |
397 | } | |
1d2af02a JA |
398 | } |
399 | ||
a31041ea | 400 | static struct ioengine_ops ioengine_rw = { |
2866c82d JA |
401 | .name = "sync", |
402 | .version = FIO_IOOPS_VERSION, | |
2866c82d JA |
403 | .prep = fio_syncio_prep, |
404 | .queue = fio_syncio_queue, | |
b5af8293 JA |
405 | .open_file = generic_open_file, |
406 | .close_file = generic_close_file, | |
df9c26b1 | 407 | .get_file_size = generic_get_file_size, |
2866c82d JA |
408 | .flags = FIO_SYNCIO, |
409 | }; | |
5f350952 | 410 | |
a31041ea | 411 | static struct ioengine_ops ioengine_prw = { |
412 | .name = "psync", | |
413 | .version = FIO_IOOPS_VERSION, | |
2bd3eabc | 414 | .queue = fio_psyncio_queue, |
a31041ea | 415 | .open_file = generic_open_file, |
416 | .close_file = generic_close_file, | |
df9c26b1 | 417 | .get_file_size = generic_get_file_size, |
a31041ea | 418 | .flags = FIO_SYNCIO, |
419 | }; | |
420 | ||
1d2af02a JA |
421 | static struct ioengine_ops ioengine_vrw = { |
422 | .name = "vsync", | |
423 | .version = FIO_IOOPS_VERSION, | |
424 | .init = fio_vsyncio_init, | |
425 | .cleanup = fio_vsyncio_cleanup, | |
426 | .queue = fio_vsyncio_queue, | |
427 | .commit = fio_vsyncio_commit, | |
428 | .event = fio_vsyncio_event, | |
429 | .getevents = fio_vsyncio_getevents, | |
430 | .open_file = generic_open_file, | |
431 | .close_file = generic_close_file, | |
df9c26b1 | 432 | .get_file_size = generic_get_file_size, |
1d2af02a JA |
433 | .flags = FIO_SYNCIO, |
434 | }; | |
435 | ||
07fc0acd JA |
436 | #ifdef CONFIG_PWRITEV |
437 | static struct ioengine_ops ioengine_pvrw = { | |
438 | .name = "pvsync", | |
439 | .version = FIO_IOOPS_VERSION, | |
440 | .init = fio_vsyncio_init, | |
441 | .cleanup = fio_vsyncio_cleanup, | |
442 | .queue = fio_pvsyncio_queue, | |
443 | .open_file = generic_open_file, | |
444 | .close_file = generic_close_file, | |
445 | .get_file_size = generic_get_file_size, | |
446 | .flags = FIO_SYNCIO, | |
447 | }; | |
448 | #endif | |
449 | ||
6562685f | 450 | #ifdef FIO_HAVE_PWRITEV2 |
2cafffbe JA |
451 | static struct ioengine_ops ioengine_pvrw2 = { |
452 | .name = "pvsync2", | |
453 | .version = FIO_IOOPS_VERSION, | |
454 | .init = fio_vsyncio_init, | |
455 | .cleanup = fio_vsyncio_cleanup, | |
456 | .queue = fio_pvsyncio2_queue, | |
457 | .open_file = generic_open_file, | |
458 | .close_file = generic_close_file, | |
459 | .get_file_size = generic_get_file_size, | |
460 | .flags = FIO_SYNCIO, | |
461 | .options = options, | |
462 | .option_struct_size = sizeof(struct psyncv2_options), | |
463 | }; | |
464 | #endif | |
465 | ||
5f350952 JA |
466 | static void fio_init fio_syncio_register(void) |
467 | { | |
a31041ea | 468 | register_ioengine(&ioengine_rw); |
469 | register_ioengine(&ioengine_prw); | |
1d2af02a | 470 | register_ioengine(&ioengine_vrw); |
9a0ced5a | 471 | #ifdef CONFIG_PWRITEV |
07fc0acd | 472 | register_ioengine(&ioengine_pvrw); |
9a0ced5a | 473 | #endif |
6562685f | 474 | #ifdef FIO_HAVE_PWRITEV2 |
526c403d JD |
475 | register_ioengine(&ioengine_pvrw2); |
476 | #endif | |
5f350952 JA |
477 | } |
478 | ||
479 | static void fio_exit fio_syncio_unregister(void) | |
480 | { | |
a31041ea | 481 | unregister_ioengine(&ioengine_rw); |
482 | unregister_ioengine(&ioengine_prw); | |
1d2af02a | 483 | unregister_ioengine(&ioengine_vrw); |
9a0ced5a | 484 | #ifdef CONFIG_PWRITEV |
07fc0acd | 485 | unregister_ioengine(&ioengine_pvrw); |
9a0ced5a | 486 | #endif |
6562685f | 487 | #ifdef FIO_HAVE_PWRITEV2 |
526c403d JD |
488 | unregister_ioengine(&ioengine_pvrw2); |
489 | #endif | |
5f350952 | 490 | } |