Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1 | /* |
| 2 | * fio - the flexible io tester |
| 3 | * |
| 4 | * Copyright (C) 2005 Jens Axboe <axboe@suse.de> |
| 5 | * Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk> |
| 6 | * |
| 7 | * The license below covers all files distributed with fio unless otherwise |
| 8 | * noted in the file itself. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | */ |
| 24 | #include <unistd.h> |
| 25 | #include <fcntl.h> |
| 26 | #include <string.h> |
| 27 | #include <limits.h> |
| 28 | #include <signal.h> |
| 29 | #include <time.h> |
| 30 | #include <locale.h> |
| 31 | #include <assert.h> |
| 32 | #include <time.h> |
Bruce Cran | e43606c | 2012-02-20 09:34:24 +0100 | [diff] [blame] | 33 | #include <inttypes.h> |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 34 | #include <sys/stat.h> |
| 35 | #include <sys/wait.h> |
| 36 | #include <sys/ipc.h> |
Aaron Carroll | ec5c6b1 | 2012-11-21 10:39:00 +0100 | [diff] [blame] | 37 | #ifndef FIO_NO_HAVE_SHM_H |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 38 | #include <sys/shm.h> |
Aaron Carroll | ec5c6b1 | 2012-11-21 10:39:00 +0100 | [diff] [blame] | 39 | #endif |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 40 | #include <sys/mman.h> |
| 41 | |
| 42 | #include "fio.h" |
| 43 | #include "hash.h" |
| 44 | #include "smalloc.h" |
| 45 | #include "verify.h" |
| 46 | #include "trim.h" |
| 47 | #include "diskutil.h" |
| 48 | #include "cgroup.h" |
| 49 | #include "profile.h" |
| 50 | #include "lib/rand.h" |
| 51 | #include "memalign.h" |
| 52 | #include "server.h" |
| 53 | |
| 54 | static pthread_t disk_util_thread; |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 55 | static struct fio_mutex *disk_thread_mutex; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 56 | static struct fio_mutex *startup_mutex; |
| 57 | static struct fio_mutex *writeout_mutex; |
| 58 | static struct flist_head *cgroup_list; |
| 59 | static char *cgroup_mnt; |
| 60 | static int exit_value; |
| 61 | static volatile int fio_abort; |
| 62 | |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 63 | struct io_log *agg_io_log[DDIR_RWDIR_CNT]; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 64 | |
Jens Axboe | a3efc91 | 2012-02-09 11:25:24 +0100 | [diff] [blame] | 65 | int groupid = 0; |
| 66 | unsigned int thread_number = 0; |
Jens Axboe | 108fea7 | 2012-11-14 13:09:45 -0700 | [diff] [blame] | 67 | unsigned int stat_number = 0; |
Jens Axboe | a3efc91 | 2012-02-09 11:25:24 +0100 | [diff] [blame] | 68 | unsigned int nr_process = 0; |
| 69 | unsigned int nr_thread = 0; |
| 70 | int shm_id = 0; |
| 71 | int temp_stall_ts; |
| 72 | unsigned long done_secs = 0; |
Jens Axboe | 2735718 | 2012-09-27 11:31:50 +0200 | [diff] [blame] | 73 | volatile int disk_util_exit = 0; |
Jens Axboe | a3efc91 | 2012-02-09 11:25:24 +0100 | [diff] [blame] | 74 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 75 | #define PAGE_ALIGN(buf) \ |
Bruce Cran | e43606c | 2012-02-20 09:34:24 +0100 | [diff] [blame] | 76 | (char *) (((uintptr_t) (buf) + page_mask) & ~page_mask) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 77 | |
| 78 | #define JOB_START_TIMEOUT (5 * 1000) |
| 79 | |
| 80 | static void sig_int(int sig) |
| 81 | { |
| 82 | if (threads) { |
| 83 | if (is_backend) |
| 84 | fio_server_got_signal(sig); |
| 85 | else { |
| 86 | log_info("\nfio: terminating on signal %d\n", sig); |
| 87 | fflush(stdout); |
| 88 | exit_value = 128; |
| 89 | } |
| 90 | |
| 91 | fio_terminate_threads(TERMINATE_ALL); |
| 92 | } |
| 93 | } |
| 94 | |
Jens Axboe | 4c6d91e | 2012-03-30 10:30:35 +0200 | [diff] [blame] | 95 | static void sig_show_status(int sig) |
| 96 | { |
| 97 | show_running_run_stats(); |
| 98 | } |
| 99 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 100 | static void set_sig_handlers(void) |
| 101 | { |
| 102 | struct sigaction act; |
| 103 | |
| 104 | memset(&act, 0, sizeof(act)); |
| 105 | act.sa_handler = sig_int; |
| 106 | act.sa_flags = SA_RESTART; |
| 107 | sigaction(SIGINT, &act, NULL); |
| 108 | |
| 109 | memset(&act, 0, sizeof(act)); |
| 110 | act.sa_handler = sig_int; |
| 111 | act.sa_flags = SA_RESTART; |
| 112 | sigaction(SIGTERM, &act, NULL); |
| 113 | |
Bruce Cran | 2f69450 | 2012-10-10 16:34:13 +0100 | [diff] [blame] | 114 | /* Windows uses SIGBREAK as a quit signal from other applications */ |
| 115 | #ifdef WIN32 |
| 116 | memset(&act, 0, sizeof(act)); |
| 117 | act.sa_handler = sig_int; |
| 118 | act.sa_flags = SA_RESTART; |
| 119 | sigaction(SIGBREAK, &act, NULL); |
| 120 | #endif |
| 121 | |
Jens Axboe | 4c6d91e | 2012-03-30 10:30:35 +0200 | [diff] [blame] | 122 | memset(&act, 0, sizeof(act)); |
| 123 | act.sa_handler = sig_show_status; |
| 124 | act.sa_flags = SA_RESTART; |
| 125 | sigaction(SIGUSR1, &act, NULL); |
| 126 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 127 | if (is_backend) { |
| 128 | memset(&act, 0, sizeof(act)); |
| 129 | act.sa_handler = sig_int; |
| 130 | act.sa_flags = SA_RESTART; |
| 131 | sigaction(SIGPIPE, &act, NULL); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | /* |
| 136 | * Check if we are above the minimum rate given. |
| 137 | */ |
| 138 | static int __check_min_rate(struct thread_data *td, struct timeval *now, |
| 139 | enum fio_ddir ddir) |
| 140 | { |
| 141 | unsigned long long bytes = 0; |
| 142 | unsigned long iops = 0; |
| 143 | unsigned long spent; |
| 144 | unsigned long rate; |
| 145 | unsigned int ratemin = 0; |
| 146 | unsigned int rate_iops = 0; |
| 147 | unsigned int rate_iops_min = 0; |
| 148 | |
| 149 | assert(ddir_rw(ddir)); |
| 150 | |
| 151 | if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir]) |
| 152 | return 0; |
| 153 | |
| 154 | /* |
| 155 | * allow a 2 second settle period in the beginning |
| 156 | */ |
| 157 | if (mtime_since(&td->start, now) < 2000) |
| 158 | return 0; |
| 159 | |
| 160 | iops += td->this_io_blocks[ddir]; |
| 161 | bytes += td->this_io_bytes[ddir]; |
| 162 | ratemin += td->o.ratemin[ddir]; |
| 163 | rate_iops += td->o.rate_iops[ddir]; |
| 164 | rate_iops_min += td->o.rate_iops_min[ddir]; |
| 165 | |
| 166 | /* |
| 167 | * if rate blocks is set, sample is running |
| 168 | */ |
| 169 | if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) { |
| 170 | spent = mtime_since(&td->lastrate[ddir], now); |
| 171 | if (spent < td->o.ratecycle) |
| 172 | return 0; |
| 173 | |
| 174 | if (td->o.rate[ddir]) { |
| 175 | /* |
| 176 | * check bandwidth specified rate |
| 177 | */ |
| 178 | if (bytes < td->rate_bytes[ddir]) { |
| 179 | log_err("%s: min rate %u not met\n", td->o.name, |
| 180 | ratemin); |
| 181 | return 1; |
| 182 | } else { |
| 183 | rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent; |
| 184 | if (rate < ratemin || |
| 185 | bytes < td->rate_bytes[ddir]) { |
| 186 | log_err("%s: min rate %u not met, got" |
| 187 | " %luKB/sec\n", td->o.name, |
| 188 | ratemin, rate); |
| 189 | return 1; |
| 190 | } |
| 191 | } |
| 192 | } else { |
| 193 | /* |
| 194 | * checks iops specified rate |
| 195 | */ |
| 196 | if (iops < rate_iops) { |
| 197 | log_err("%s: min iops rate %u not met\n", |
| 198 | td->o.name, rate_iops); |
| 199 | return 1; |
| 200 | } else { |
| 201 | rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent; |
| 202 | if (rate < rate_iops_min || |
| 203 | iops < td->rate_blocks[ddir]) { |
| 204 | log_err("%s: min iops rate %u not met," |
| 205 | " got %lu\n", td->o.name, |
| 206 | rate_iops_min, rate); |
| 207 | } |
| 208 | } |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | td->rate_bytes[ddir] = bytes; |
| 213 | td->rate_blocks[ddir] = iops; |
| 214 | memcpy(&td->lastrate[ddir], now, sizeof(*now)); |
| 215 | return 0; |
| 216 | } |
| 217 | |
| 218 | static int check_min_rate(struct thread_data *td, struct timeval *now, |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 219 | uint64_t *bytes_done) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 220 | { |
| 221 | int ret = 0; |
| 222 | |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 223 | if (bytes_done[DDIR_READ]) |
| 224 | ret |= __check_min_rate(td, now, DDIR_READ); |
| 225 | if (bytes_done[DDIR_WRITE]) |
| 226 | ret |= __check_min_rate(td, now, DDIR_WRITE); |
| 227 | if (bytes_done[DDIR_TRIM]) |
| 228 | ret |= __check_min_rate(td, now, DDIR_TRIM); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 229 | |
| 230 | return ret; |
| 231 | } |
| 232 | |
| 233 | /* |
| 234 | * When job exits, we can cancel the in-flight IO if we are using async |
| 235 | * io. Attempt to do so. |
| 236 | */ |
| 237 | static void cleanup_pending_aio(struct thread_data *td) |
| 238 | { |
| 239 | struct flist_head *entry, *n; |
| 240 | struct io_u *io_u; |
| 241 | int r; |
| 242 | |
| 243 | /* |
| 244 | * get immediately available events, if any |
| 245 | */ |
| 246 | r = io_u_queued_complete(td, 0, NULL); |
| 247 | if (r < 0) |
| 248 | return; |
| 249 | |
| 250 | /* |
| 251 | * now cancel remaining active events |
| 252 | */ |
| 253 | if (td->io_ops->cancel) { |
| 254 | flist_for_each_safe(entry, n, &td->io_u_busylist) { |
| 255 | io_u = flist_entry(entry, struct io_u, list); |
| 256 | |
| 257 | /* |
| 258 | * if the io_u isn't in flight, then that generally |
| 259 | * means someone leaked an io_u. complain but fix |
| 260 | * it up, so we don't stall here. |
| 261 | */ |
| 262 | if ((io_u->flags & IO_U_F_FLIGHT) == 0) { |
| 263 | log_err("fio: non-busy IO on busy list\n"); |
| 264 | put_io_u(td, io_u); |
| 265 | } else { |
| 266 | r = td->io_ops->cancel(td, io_u); |
| 267 | if (!r) |
| 268 | put_io_u(td, io_u); |
| 269 | } |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | if (td->cur_depth) |
| 274 | r = io_u_queued_complete(td, td->cur_depth, NULL); |
| 275 | } |
| 276 | |
| 277 | /* |
| 278 | * Helper to handle the final sync of a file. Works just like the normal |
| 279 | * io path, just does everything sync. |
| 280 | */ |
| 281 | static int fio_io_sync(struct thread_data *td, struct fio_file *f) |
| 282 | { |
| 283 | struct io_u *io_u = __get_io_u(td); |
| 284 | int ret; |
| 285 | |
| 286 | if (!io_u) |
| 287 | return 1; |
| 288 | |
| 289 | io_u->ddir = DDIR_SYNC; |
| 290 | io_u->file = f; |
| 291 | |
| 292 | if (td_io_prep(td, io_u)) { |
| 293 | put_io_u(td, io_u); |
| 294 | return 1; |
| 295 | } |
| 296 | |
| 297 | requeue: |
| 298 | ret = td_io_queue(td, io_u); |
| 299 | if (ret < 0) { |
| 300 | td_verror(td, io_u->error, "td_io_queue"); |
| 301 | put_io_u(td, io_u); |
| 302 | return 1; |
| 303 | } else if (ret == FIO_Q_QUEUED) { |
| 304 | if (io_u_queued_complete(td, 1, NULL) < 0) |
| 305 | return 1; |
| 306 | } else if (ret == FIO_Q_COMPLETED) { |
| 307 | if (io_u->error) { |
| 308 | td_verror(td, io_u->error, "td_io_queue"); |
| 309 | return 1; |
| 310 | } |
| 311 | |
| 312 | if (io_u_sync_complete(td, io_u, NULL) < 0) |
| 313 | return 1; |
| 314 | } else if (ret == FIO_Q_BUSY) { |
| 315 | if (td_io_commit(td)) |
| 316 | return 1; |
| 317 | goto requeue; |
| 318 | } |
| 319 | |
| 320 | return 0; |
| 321 | } |
Jens Axboe | a3efc91 | 2012-02-09 11:25:24 +0100 | [diff] [blame] | 322 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 323 | static inline void __update_tv_cache(struct thread_data *td) |
| 324 | { |
| 325 | fio_gettime(&td->tv_cache, NULL); |
| 326 | } |
| 327 | |
| 328 | static inline void update_tv_cache(struct thread_data *td) |
| 329 | { |
| 330 | if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask) |
| 331 | __update_tv_cache(td); |
| 332 | } |
| 333 | |
| 334 | static inline int runtime_exceeded(struct thread_data *td, struct timeval *t) |
| 335 | { |
| 336 | if (in_ramp_time(td)) |
| 337 | return 0; |
| 338 | if (!td->o.timeout) |
| 339 | return 0; |
| 340 | if (mtime_since(&td->epoch, t) >= td->o.timeout * 1000) |
| 341 | return 1; |
| 342 | |
| 343 | return 0; |
| 344 | } |
| 345 | |
| 346 | static int break_on_this_error(struct thread_data *td, enum fio_ddir ddir, |
| 347 | int *retptr) |
| 348 | { |
| 349 | int ret = *retptr; |
| 350 | |
| 351 | if (ret < 0 || td->error) { |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 352 | int err = td->error; |
| 353 | enum error_type_bit eb; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 354 | |
| 355 | if (ret < 0) |
| 356 | err = -ret; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 357 | |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 358 | eb = td_error_type(ddir, err); |
| 359 | if (!(td->o.continue_on_error & (1 << eb))) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 360 | return 1; |
| 361 | |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 362 | if (td_non_fatal_error(td, eb, err)) { |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 363 | /* |
| 364 | * Continue with the I/Os in case of |
| 365 | * a non fatal error. |
| 366 | */ |
| 367 | update_error_count(td, err); |
| 368 | td_clear_error(td); |
| 369 | *retptr = 0; |
| 370 | return 0; |
| 371 | } else if (td->o.fill_device && err == ENOSPC) { |
| 372 | /* |
| 373 | * We expect to hit this error if |
| 374 | * fill_device option is set. |
| 375 | */ |
| 376 | td_clear_error(td); |
| 377 | td->terminate = 1; |
| 378 | return 1; |
| 379 | } else { |
| 380 | /* |
| 381 | * Stop the I/O in case of a fatal |
| 382 | * error. |
| 383 | */ |
| 384 | update_error_count(td, err); |
| 385 | return 1; |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | return 0; |
| 390 | } |
| 391 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 392 | /* |
| 393 | * The main verify engine. Runs over the writes we previously submitted, |
| 394 | * reads the blocks back in, and checks the crc/md5 of the data. |
| 395 | */ |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 396 | static void do_verify(struct thread_data *td, uint64_t verify_bytes) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 397 | { |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 398 | uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 }; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 399 | struct fio_file *f; |
| 400 | struct io_u *io_u; |
| 401 | int ret, min_events; |
| 402 | unsigned int i; |
| 403 | |
| 404 | dprint(FD_VERIFY, "starting loop\n"); |
| 405 | |
| 406 | /* |
| 407 | * sync io first and invalidate cache, to make sure we really |
| 408 | * read from disk. |
| 409 | */ |
| 410 | for_each_file(td, f, i) { |
| 411 | if (!fio_file_open(f)) |
| 412 | continue; |
| 413 | if (fio_io_sync(td, f)) |
| 414 | break; |
| 415 | if (file_invalidate_cache(td, f)) |
| 416 | break; |
| 417 | } |
| 418 | |
| 419 | if (td->error) |
| 420 | return; |
| 421 | |
| 422 | td_set_runstate(td, TD_VERIFYING); |
| 423 | |
| 424 | io_u = NULL; |
| 425 | while (!td->terminate) { |
Jens Axboe | fbccf46 | 2013-01-08 21:02:14 +0100 | [diff] [blame] | 426 | enum fio_ddir ddir; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 427 | int ret2, full; |
| 428 | |
| 429 | update_tv_cache(td); |
| 430 | |
| 431 | if (runtime_exceeded(td, &td->tv_cache)) { |
| 432 | __update_tv_cache(td); |
| 433 | if (runtime_exceeded(td, &td->tv_cache)) { |
| 434 | td->terminate = 1; |
| 435 | break; |
| 436 | } |
| 437 | } |
| 438 | |
Dan Ehrenberg | 9e684a4 | 2012-02-20 11:05:14 +0100 | [diff] [blame] | 439 | if (flow_threshold_exceeded(td)) |
| 440 | continue; |
| 441 | |
Jens Axboe | 44cbc6d | 2013-01-21 09:47:03 -0700 | [diff] [blame] | 442 | if (!td->o.experimental_verify) { |
| 443 | io_u = __get_io_u(td); |
| 444 | if (!io_u) |
| 445 | break; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 446 | |
Jens Axboe | 44cbc6d | 2013-01-21 09:47:03 -0700 | [diff] [blame] | 447 | if (get_next_verify(td, io_u)) { |
| 448 | put_io_u(td, io_u); |
| 449 | break; |
| 450 | } |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 451 | |
Jens Axboe | 44cbc6d | 2013-01-21 09:47:03 -0700 | [diff] [blame] | 452 | if (td_io_prep(td, io_u)) { |
| 453 | put_io_u(td, io_u); |
| 454 | break; |
| 455 | } |
| 456 | } else { |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 457 | if (ddir_rw_sum(bytes_done) + td->o.rw_min_bs > verify_bytes) |
| 458 | break; |
| 459 | |
Jens Axboe | bcd5abf | 2013-01-23 09:27:25 -0700 | [diff] [blame] | 460 | while ((io_u = get_io_u(td)) != NULL) { |
| 461 | /* |
| 462 | * We are only interested in the places where |
| 463 | * we wrote or trimmed IOs. Turn those into |
| 464 | * reads for verification purposes. |
| 465 | */ |
| 466 | if (io_u->ddir == DDIR_READ) { |
| 467 | /* |
| 468 | * Pretend we issued it for rwmix |
| 469 | * accounting |
| 470 | */ |
| 471 | td->io_issues[DDIR_READ]++; |
| 472 | put_io_u(td, io_u); |
| 473 | continue; |
| 474 | } else if (io_u->ddir == DDIR_TRIM) { |
| 475 | io_u->ddir = DDIR_READ; |
| 476 | io_u->flags |= IO_U_F_TRIMMED; |
| 477 | break; |
| 478 | } else if (io_u->ddir == DDIR_WRITE) { |
| 479 | io_u->ddir = DDIR_READ; |
| 480 | break; |
| 481 | } else { |
| 482 | put_io_u(td, io_u); |
| 483 | continue; |
| 484 | } |
| 485 | } |
Jens Axboe | 44cbc6d | 2013-01-21 09:47:03 -0700 | [diff] [blame] | 486 | |
Jens Axboe | bcd5abf | 2013-01-23 09:27:25 -0700 | [diff] [blame] | 487 | if (!io_u) |
Jens Axboe | 44cbc6d | 2013-01-21 09:47:03 -0700 | [diff] [blame] | 488 | break; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | if (td->o.verify_async) |
| 492 | io_u->end_io = verify_io_u_async; |
| 493 | else |
| 494 | io_u->end_io = verify_io_u; |
| 495 | |
Jens Axboe | fbccf46 | 2013-01-08 21:02:14 +0100 | [diff] [blame] | 496 | ddir = io_u->ddir; |
| 497 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 498 | ret = td_io_queue(td, io_u); |
| 499 | switch (ret) { |
| 500 | case FIO_Q_COMPLETED: |
| 501 | if (io_u->error) { |
| 502 | ret = -io_u->error; |
| 503 | clear_io_u(td, io_u); |
| 504 | } else if (io_u->resid) { |
| 505 | int bytes = io_u->xfer_buflen - io_u->resid; |
| 506 | |
| 507 | /* |
| 508 | * zero read, fail |
| 509 | */ |
| 510 | if (!bytes) { |
| 511 | td_verror(td, EIO, "full resid"); |
| 512 | put_io_u(td, io_u); |
| 513 | break; |
| 514 | } |
| 515 | |
| 516 | io_u->xfer_buflen = io_u->resid; |
| 517 | io_u->xfer_buf += bytes; |
| 518 | io_u->offset += bytes; |
| 519 | |
| 520 | if (ddir_rw(io_u->ddir)) |
| 521 | td->ts.short_io_u[io_u->ddir]++; |
| 522 | |
| 523 | f = io_u->file; |
| 524 | if (io_u->offset == f->real_file_size) |
| 525 | goto sync_done; |
| 526 | |
| 527 | requeue_io_u(td, &io_u); |
| 528 | } else { |
| 529 | sync_done: |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 530 | ret = io_u_sync_complete(td, io_u, bytes_done); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 531 | if (ret < 0) |
| 532 | break; |
| 533 | } |
| 534 | continue; |
| 535 | case FIO_Q_QUEUED: |
| 536 | break; |
| 537 | case FIO_Q_BUSY: |
| 538 | requeue_io_u(td, &io_u); |
| 539 | ret2 = td_io_commit(td); |
| 540 | if (ret2 < 0) |
| 541 | ret = ret2; |
| 542 | break; |
| 543 | default: |
| 544 | assert(ret < 0); |
| 545 | td_verror(td, -ret, "td_io_queue"); |
| 546 | break; |
| 547 | } |
| 548 | |
Jens Axboe | fbccf46 | 2013-01-08 21:02:14 +0100 | [diff] [blame] | 549 | if (break_on_this_error(td, ddir, &ret)) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 550 | break; |
| 551 | |
| 552 | /* |
| 553 | * if we can queue more, do so. but check if there are |
| 554 | * completed io_u's first. Note that we can get BUSY even |
| 555 | * without IO queued, if the system is resource starved. |
| 556 | */ |
| 557 | full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth); |
| 558 | if (full || !td->o.iodepth_batch_complete) { |
| 559 | min_events = min(td->o.iodepth_batch_complete, |
| 560 | td->cur_depth); |
Jens Axboe | 8a74b56 | 2012-03-16 13:55:50 +0100 | [diff] [blame] | 561 | /* |
| 562 | * if the queue is full, we MUST reap at least 1 event |
| 563 | */ |
| 564 | if (full && !min_events) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 565 | min_events = 1; |
| 566 | |
| 567 | do { |
| 568 | /* |
| 569 | * Reap required number of io units, if any, |
| 570 | * and do the verification on them through |
| 571 | * the callback handler |
| 572 | */ |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 573 | if (io_u_queued_complete(td, min_events, bytes_done) < 0) { |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 574 | ret = -1; |
| 575 | break; |
| 576 | } |
| 577 | } while (full && (td->cur_depth > td->o.iodepth_low)); |
| 578 | } |
| 579 | if (ret < 0) |
| 580 | break; |
| 581 | } |
| 582 | |
| 583 | if (!td->error) { |
| 584 | min_events = td->cur_depth; |
| 585 | |
| 586 | if (min_events) |
| 587 | ret = io_u_queued_complete(td, min_events, NULL); |
| 588 | } else |
| 589 | cleanup_pending_aio(td); |
| 590 | |
| 591 | td_set_runstate(td, TD_RUNNING); |
| 592 | |
| 593 | dprint(FD_VERIFY, "exiting loop\n"); |
| 594 | } |
| 595 | |
Jens Axboe | f7078f7 | 2012-03-07 09:24:05 +0100 | [diff] [blame] | 596 | static int io_bytes_exceeded(struct thread_data *td) |
| 597 | { |
| 598 | unsigned long long bytes; |
| 599 | |
| 600 | if (td_rw(td)) |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 601 | bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE]; |
Jens Axboe | f7078f7 | 2012-03-07 09:24:05 +0100 | [diff] [blame] | 602 | else if (td_write(td)) |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 603 | bytes = td->this_io_bytes[DDIR_WRITE]; |
| 604 | else if (td_read(td)) |
| 605 | bytes = td->this_io_bytes[DDIR_READ]; |
Jens Axboe | f7078f7 | 2012-03-07 09:24:05 +0100 | [diff] [blame] | 606 | else |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 607 | bytes = td->this_io_bytes[DDIR_TRIM]; |
Jens Axboe | f7078f7 | 2012-03-07 09:24:05 +0100 | [diff] [blame] | 608 | |
| 609 | return bytes >= td->o.size; |
| 610 | } |
| 611 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 612 | /* |
| 613 | * Main IO worker function. It retrieves io_u's to process and queues |
| 614 | * and reaps them, checking for rate and errors along the way. |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 615 | * |
| 616 | * Returns number of bytes written and trimmed. |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 617 | */ |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 618 | static uint64_t do_io(struct thread_data *td) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 619 | { |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 620 | uint64_t bytes_done[DDIR_RWDIR_CNT] = { 0, 0, 0 }; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 621 | unsigned int i; |
| 622 | int ret = 0; |
| 623 | |
| 624 | if (in_ramp_time(td)) |
| 625 | td_set_runstate(td, TD_RAMP); |
| 626 | else |
| 627 | td_set_runstate(td, TD_RUNNING); |
| 628 | |
Jens Axboe | f7078f7 | 2012-03-07 09:24:05 +0100 | [diff] [blame] | 629 | while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) || |
Daniel Ehrenberg | c04e466 | 2012-03-16 18:54:15 +0100 | [diff] [blame] | 630 | (!flist_empty(&td->trim_list)) || !io_bytes_exceeded(td) || |
| 631 | td->o.time_based) { |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 632 | struct timeval comp_time; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 633 | int min_evts = 0; |
| 634 | struct io_u *io_u; |
| 635 | int ret2, full; |
| 636 | enum fio_ddir ddir; |
| 637 | |
Yufei Ren | 7d7803f | 2012-10-22 21:29:38 -0400 | [diff] [blame] | 638 | if (td->terminate || td->done) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 639 | break; |
| 640 | |
| 641 | update_tv_cache(td); |
| 642 | |
| 643 | if (runtime_exceeded(td, &td->tv_cache)) { |
| 644 | __update_tv_cache(td); |
| 645 | if (runtime_exceeded(td, &td->tv_cache)) { |
| 646 | td->terminate = 1; |
| 647 | break; |
| 648 | } |
| 649 | } |
| 650 | |
Dan Ehrenberg | 9e684a4 | 2012-02-20 11:05:14 +0100 | [diff] [blame] | 651 | if (flow_threshold_exceeded(td)) |
| 652 | continue; |
| 653 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 654 | io_u = get_io_u(td); |
| 655 | if (!io_u) |
| 656 | break; |
| 657 | |
| 658 | ddir = io_u->ddir; |
| 659 | |
| 660 | /* |
Jens Axboe | 82af2a7 | 2012-03-13 13:45:58 +0100 | [diff] [blame] | 661 | * Add verification end_io handler if: |
| 662 | * - Asked to verify (!td_rw(td)) |
| 663 | * - Or the io_u is from our verify list (mixed write/ver) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 664 | */ |
| 665 | if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ && |
Jens Axboe | 82af2a7 | 2012-03-13 13:45:58 +0100 | [diff] [blame] | 666 | ((io_u->flags & IO_U_F_VER_LIST) || !td_rw(td))) { |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 667 | if (td->o.verify_async) |
| 668 | io_u->end_io = verify_io_u_async; |
| 669 | else |
| 670 | io_u->end_io = verify_io_u; |
| 671 | td_set_runstate(td, TD_VERIFYING); |
| 672 | } else if (in_ramp_time(td)) |
| 673 | td_set_runstate(td, TD_RAMP); |
| 674 | else |
| 675 | td_set_runstate(td, TD_RUNNING); |
| 676 | |
| 677 | ret = td_io_queue(td, io_u); |
| 678 | switch (ret) { |
| 679 | case FIO_Q_COMPLETED: |
| 680 | if (io_u->error) { |
| 681 | ret = -io_u->error; |
| 682 | clear_io_u(td, io_u); |
| 683 | } else if (io_u->resid) { |
| 684 | int bytes = io_u->xfer_buflen - io_u->resid; |
| 685 | struct fio_file *f = io_u->file; |
| 686 | |
| 687 | /* |
| 688 | * zero read, fail |
| 689 | */ |
| 690 | if (!bytes) { |
| 691 | td_verror(td, EIO, "full resid"); |
| 692 | put_io_u(td, io_u); |
| 693 | break; |
| 694 | } |
| 695 | |
| 696 | io_u->xfer_buflen = io_u->resid; |
| 697 | io_u->xfer_buf += bytes; |
| 698 | io_u->offset += bytes; |
| 699 | |
| 700 | if (ddir_rw(io_u->ddir)) |
| 701 | td->ts.short_io_u[io_u->ddir]++; |
| 702 | |
| 703 | if (io_u->offset == f->real_file_size) |
| 704 | goto sync_done; |
| 705 | |
| 706 | requeue_io_u(td, &io_u); |
| 707 | } else { |
| 708 | sync_done: |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 709 | if (__should_check_rate(td, DDIR_READ) || |
| 710 | __should_check_rate(td, DDIR_WRITE) || |
| 711 | __should_check_rate(td, DDIR_TRIM)) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 712 | fio_gettime(&comp_time, NULL); |
| 713 | |
| 714 | ret = io_u_sync_complete(td, io_u, bytes_done); |
| 715 | if (ret < 0) |
| 716 | break; |
| 717 | } |
| 718 | break; |
| 719 | case FIO_Q_QUEUED: |
| 720 | /* |
| 721 | * if the engine doesn't have a commit hook, |
| 722 | * the io_u is really queued. if it does have such |
| 723 | * a hook, it has to call io_u_queued() itself. |
| 724 | */ |
| 725 | if (td->io_ops->commit == NULL) |
| 726 | io_u_queued(td, io_u); |
| 727 | break; |
| 728 | case FIO_Q_BUSY: |
| 729 | requeue_io_u(td, &io_u); |
| 730 | ret2 = td_io_commit(td); |
| 731 | if (ret2 < 0) |
| 732 | ret = ret2; |
| 733 | break; |
| 734 | default: |
| 735 | assert(ret < 0); |
| 736 | put_io_u(td, io_u); |
| 737 | break; |
| 738 | } |
| 739 | |
| 740 | if (break_on_this_error(td, ddir, &ret)) |
| 741 | break; |
| 742 | |
| 743 | /* |
| 744 | * See if we need to complete some commands. Note that we |
| 745 | * can get BUSY even without IO queued, if the system is |
| 746 | * resource starved. |
| 747 | */ |
| 748 | full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth); |
| 749 | if (full || !td->o.iodepth_batch_complete) { |
| 750 | min_evts = min(td->o.iodepth_batch_complete, |
| 751 | td->cur_depth); |
Jens Axboe | 8a74b56 | 2012-03-16 13:55:50 +0100 | [diff] [blame] | 752 | /* |
| 753 | * if the queue is full, we MUST reap at least 1 event |
| 754 | */ |
| 755 | if (full && !min_evts) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 756 | min_evts = 1; |
| 757 | |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 758 | if (__should_check_rate(td, DDIR_READ) || |
| 759 | __should_check_rate(td, DDIR_WRITE) || |
| 760 | __should_check_rate(td, DDIR_TRIM)) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 761 | fio_gettime(&comp_time, NULL); |
| 762 | |
| 763 | do { |
| 764 | ret = io_u_queued_complete(td, min_evts, bytes_done); |
| 765 | if (ret < 0) |
| 766 | break; |
| 767 | |
| 768 | } while (full && (td->cur_depth > td->o.iodepth_low)); |
| 769 | } |
| 770 | |
| 771 | if (ret < 0) |
| 772 | break; |
Jens Axboe | d5abee0 | 2012-10-22 20:36:26 +0200 | [diff] [blame] | 773 | if (!ddir_rw_sum(bytes_done) && !(td->io_ops->flags & FIO_NOIO)) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 774 | continue; |
| 775 | |
| 776 | if (!in_ramp_time(td) && should_check_rate(td, bytes_done)) { |
| 777 | if (check_min_rate(td, &comp_time, bytes_done)) { |
| 778 | if (exitall_on_terminate) |
| 779 | fio_terminate_threads(td->groupid); |
| 780 | td_verror(td, EIO, "check_min_rate"); |
| 781 | break; |
| 782 | } |
| 783 | } |
| 784 | |
| 785 | if (td->o.thinktime) { |
| 786 | unsigned long long b; |
| 787 | |
Jens Axboe | 342f4be | 2012-09-14 08:59:20 +0200 | [diff] [blame] | 788 | b = ddir_rw_sum(td->io_blocks); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 789 | if (!(b % td->o.thinktime_blocks)) { |
| 790 | int left; |
| 791 | |
| 792 | if (td->o.thinktime_spin) |
| 793 | usec_spin(td->o.thinktime_spin); |
| 794 | |
| 795 | left = td->o.thinktime - td->o.thinktime_spin; |
| 796 | if (left) |
| 797 | usec_sleep(td, left); |
| 798 | } |
| 799 | } |
| 800 | } |
| 801 | |
| 802 | if (td->trim_entries) |
| 803 | log_err("fio: %d trim entries leaked?\n", td->trim_entries); |
| 804 | |
| 805 | if (td->o.fill_device && td->error == ENOSPC) { |
| 806 | td->error = 0; |
| 807 | td->terminate = 1; |
| 808 | } |
| 809 | if (!td->error) { |
| 810 | struct fio_file *f; |
| 811 | |
| 812 | i = td->cur_depth; |
| 813 | if (i) { |
| 814 | ret = io_u_queued_complete(td, i, NULL); |
| 815 | if (td->o.fill_device && td->error == ENOSPC) |
| 816 | td->error = 0; |
| 817 | } |
| 818 | |
| 819 | if (should_fsync(td) && td->o.end_fsync) { |
| 820 | td_set_runstate(td, TD_FSYNCING); |
| 821 | |
| 822 | for_each_file(td, f, i) { |
| 823 | if (!fio_file_open(f)) |
| 824 | continue; |
| 825 | fio_io_sync(td, f); |
| 826 | } |
| 827 | } |
| 828 | } else |
| 829 | cleanup_pending_aio(td); |
| 830 | |
| 831 | /* |
| 832 | * stop job if we failed doing any IO |
| 833 | */ |
Jens Axboe | 342f4be | 2012-09-14 08:59:20 +0200 | [diff] [blame] | 834 | if (!ddir_rw_sum(td->this_io_bytes)) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 835 | td->done = 1; |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 836 | |
| 837 | return bytes_done[DDIR_WRITE] + bytes_done[DDIR_TRIM]; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 838 | } |
| 839 | |
| 840 | static void cleanup_io_u(struct thread_data *td) |
| 841 | { |
| 842 | struct flist_head *entry, *n; |
| 843 | struct io_u *io_u; |
| 844 | |
| 845 | flist_for_each_safe(entry, n, &td->io_u_freelist) { |
| 846 | io_u = flist_entry(entry, struct io_u, list); |
| 847 | |
| 848 | flist_del(&io_u->list); |
Jens Axboe | c73ed24 | 2012-12-06 20:30:38 +0100 | [diff] [blame] | 849 | |
| 850 | if (td->io_ops->io_u_free) |
| 851 | td->io_ops->io_u_free(td, io_u); |
| 852 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 853 | fio_memfree(io_u, sizeof(*io_u)); |
| 854 | } |
| 855 | |
| 856 | free_io_mem(td); |
| 857 | } |
| 858 | |
| 859 | static int init_io_u(struct thread_data *td) |
| 860 | { |
| 861 | struct io_u *io_u; |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 862 | unsigned int max_bs, min_write; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 863 | int cl_align, i, max_units; |
Jens Axboe | 59d8d0f | 2012-09-24 14:25:33 +0200 | [diff] [blame] | 864 | int data_xfer = 1; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 865 | char *p; |
| 866 | |
| 867 | max_units = td->o.iodepth; |
| 868 | max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]); |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 869 | max_bs = max(td->o.max_bs[DDIR_TRIM], max_bs); |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 870 | min_write = td->o.min_bs[DDIR_WRITE]; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 871 | td->orig_buffer_size = (unsigned long long) max_bs |
| 872 | * (unsigned long long) max_units; |
| 873 | |
Dmitry Monakhov | 88045e0 | 2012-09-25 12:12:36 +0200 | [diff] [blame] | 874 | if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td))) |
Jens Axboe | 59d8d0f | 2012-09-24 14:25:33 +0200 | [diff] [blame] | 875 | data_xfer = 0; |
| 876 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 877 | if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) { |
| 878 | unsigned long bs; |
| 879 | |
| 880 | bs = td->orig_buffer_size + td->o.hugepage_size - 1; |
| 881 | td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1); |
| 882 | } |
| 883 | |
| 884 | if (td->orig_buffer_size != (size_t) td->orig_buffer_size) { |
| 885 | log_err("fio: IO memory too large. Reduce max_bs or iodepth\n"); |
| 886 | return 1; |
| 887 | } |
| 888 | |
Jens Axboe | 59d8d0f | 2012-09-24 14:25:33 +0200 | [diff] [blame] | 889 | if (data_xfer && allocate_io_mem(td)) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 890 | return 1; |
| 891 | |
| 892 | if (td->o.odirect || td->o.mem_align || |
| 893 | (td->io_ops->flags & FIO_RAWIO)) |
| 894 | p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align; |
| 895 | else |
| 896 | p = td->orig_buffer; |
| 897 | |
| 898 | cl_align = os_cache_line_size(); |
| 899 | |
| 900 | for (i = 0; i < max_units; i++) { |
| 901 | void *ptr; |
| 902 | |
| 903 | if (td->terminate) |
| 904 | return 1; |
| 905 | |
| 906 | ptr = fio_memalign(cl_align, sizeof(*io_u)); |
| 907 | if (!ptr) { |
| 908 | log_err("fio: unable to allocate aligned memory\n"); |
| 909 | break; |
| 910 | } |
| 911 | |
| 912 | io_u = ptr; |
| 913 | memset(io_u, 0, sizeof(*io_u)); |
| 914 | INIT_FLIST_HEAD(&io_u->list); |
| 915 | dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i); |
| 916 | |
Jens Axboe | 59d8d0f | 2012-09-24 14:25:33 +0200 | [diff] [blame] | 917 | if (data_xfer) { |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 918 | io_u->buf = p; |
| 919 | dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf); |
| 920 | |
| 921 | if (td_write(td)) |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 922 | io_u_fill_buffer(td, io_u, min_write, max_bs); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 923 | if (td_write(td) && td->o.verify_pattern_bytes) { |
| 924 | /* |
| 925 | * Fill the buffer with the pattern if we are |
| 926 | * going to be doing writes. |
| 927 | */ |
| 928 | fill_pattern(td, io_u->buf, max_bs, io_u, 0, 0); |
| 929 | } |
| 930 | } |
| 931 | |
| 932 | io_u->index = i; |
| 933 | io_u->flags = IO_U_F_FREE; |
| 934 | flist_add(&io_u->list, &td->io_u_freelist); |
Jens Axboe | c73ed24 | 2012-12-06 20:30:38 +0100 | [diff] [blame] | 935 | |
| 936 | if (td->io_ops->io_u_init) { |
| 937 | int ret = td->io_ops->io_u_init(td, io_u); |
| 938 | |
| 939 | if (ret) { |
| 940 | log_err("fio: failed to init engine data: %d\n", ret); |
| 941 | return 1; |
| 942 | } |
| 943 | } |
| 944 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 945 | p += max_bs; |
| 946 | } |
| 947 | |
| 948 | return 0; |
| 949 | } |
| 950 | |
| 951 | static int switch_ioscheduler(struct thread_data *td) |
| 952 | { |
| 953 | char tmp[256], tmp2[128]; |
| 954 | FILE *f; |
| 955 | int ret; |
| 956 | |
| 957 | if (td->io_ops->flags & FIO_DISKLESSIO) |
| 958 | return 0; |
| 959 | |
| 960 | sprintf(tmp, "%s/queue/scheduler", td->sysfs_root); |
| 961 | |
| 962 | f = fopen(tmp, "r+"); |
| 963 | if (!f) { |
| 964 | if (errno == ENOENT) { |
| 965 | log_err("fio: os or kernel doesn't support IO scheduler" |
| 966 | " switching\n"); |
| 967 | return 0; |
| 968 | } |
| 969 | td_verror(td, errno, "fopen iosched"); |
| 970 | return 1; |
| 971 | } |
| 972 | |
| 973 | /* |
| 974 | * Set io scheduler. |
| 975 | */ |
| 976 | ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f); |
| 977 | if (ferror(f) || ret != 1) { |
| 978 | td_verror(td, errno, "fwrite"); |
| 979 | fclose(f); |
| 980 | return 1; |
| 981 | } |
| 982 | |
| 983 | rewind(f); |
| 984 | |
| 985 | /* |
| 986 | * Read back and check that the selected scheduler is now the default. |
| 987 | */ |
| 988 | ret = fread(tmp, 1, sizeof(tmp), f); |
| 989 | if (ferror(f) || ret < 0) { |
| 990 | td_verror(td, errno, "fread"); |
| 991 | fclose(f); |
| 992 | return 1; |
| 993 | } |
| 994 | |
| 995 | sprintf(tmp2, "[%s]", td->o.ioscheduler); |
| 996 | if (!strstr(tmp, tmp2)) { |
| 997 | log_err("fio: io scheduler %s not found\n", td->o.ioscheduler); |
| 998 | td_verror(td, EINVAL, "iosched_switch"); |
| 999 | fclose(f); |
| 1000 | return 1; |
| 1001 | } |
| 1002 | |
| 1003 | fclose(f); |
| 1004 | return 0; |
| 1005 | } |
| 1006 | |
| 1007 | static int keep_running(struct thread_data *td) |
| 1008 | { |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1009 | if (td->done) |
| 1010 | return 0; |
| 1011 | if (td->o.time_based) |
| 1012 | return 1; |
| 1013 | if (td->o.loops) { |
| 1014 | td->o.loops--; |
| 1015 | return 1; |
| 1016 | } |
| 1017 | |
Jens Axboe | 342f4be | 2012-09-14 08:59:20 +0200 | [diff] [blame] | 1018 | if (ddir_rw_sum(td->io_bytes) < td->o.size) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1019 | return 1; |
| 1020 | |
| 1021 | return 0; |
| 1022 | } |
| 1023 | |
| 1024 | static int exec_string(const char *string) |
| 1025 | { |
| 1026 | int ret, newlen = strlen(string) + 1 + 8; |
| 1027 | char *str; |
| 1028 | |
| 1029 | str = malloc(newlen); |
| 1030 | sprintf(str, "sh -c %s", string); |
| 1031 | |
| 1032 | ret = system(str); |
| 1033 | if (ret == -1) |
| 1034 | log_err("fio: exec of cmd <%s> failed\n", str); |
| 1035 | |
| 1036 | free(str); |
| 1037 | return ret; |
| 1038 | } |
| 1039 | |
| 1040 | /* |
| 1041 | * Entry point for the thread based jobs. The process based jobs end up |
| 1042 | * here as well, after a little setup. |
| 1043 | */ |
| 1044 | static void *thread_main(void *data) |
| 1045 | { |
| 1046 | unsigned long long elapsed; |
| 1047 | struct thread_data *td = data; |
| 1048 | pthread_condattr_t attr; |
| 1049 | int clear_state; |
| 1050 | |
| 1051 | if (!td->o.use_thread) { |
| 1052 | setsid(); |
| 1053 | td->pid = getpid(); |
| 1054 | } else |
| 1055 | td->pid = gettid(); |
| 1056 | |
Jens Axboe | 5d87939 | 2012-12-18 09:12:27 +0100 | [diff] [blame] | 1057 | fio_local_clock_init(td->o.use_thread); |
| 1058 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1059 | dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid); |
| 1060 | |
| 1061 | INIT_FLIST_HEAD(&td->io_u_freelist); |
| 1062 | INIT_FLIST_HEAD(&td->io_u_busylist); |
| 1063 | INIT_FLIST_HEAD(&td->io_u_requeues); |
| 1064 | INIT_FLIST_HEAD(&td->io_log_list); |
| 1065 | INIT_FLIST_HEAD(&td->io_hist_list); |
| 1066 | INIT_FLIST_HEAD(&td->verify_list); |
| 1067 | INIT_FLIST_HEAD(&td->trim_list); |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 1068 | INIT_FLIST_HEAD(&td->next_rand_list); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1069 | pthread_mutex_init(&td->io_u_lock, NULL); |
| 1070 | td->io_hist_tree = RB_ROOT; |
| 1071 | |
| 1072 | pthread_condattr_init(&attr); |
| 1073 | pthread_cond_init(&td->verify_cond, &attr); |
| 1074 | pthread_cond_init(&td->free_cond, &attr); |
| 1075 | |
| 1076 | td_set_runstate(td, TD_INITIALIZED); |
| 1077 | dprint(FD_MUTEX, "up startup_mutex\n"); |
| 1078 | fio_mutex_up(startup_mutex); |
| 1079 | dprint(FD_MUTEX, "wait on td->mutex\n"); |
| 1080 | fio_mutex_down(td->mutex); |
| 1081 | dprint(FD_MUTEX, "done waiting on td->mutex\n"); |
| 1082 | |
| 1083 | /* |
| 1084 | * the ->mutex mutex is now no longer used, close it to avoid |
| 1085 | * eating a file descriptor |
| 1086 | */ |
| 1087 | fio_mutex_remove(td->mutex); |
| 1088 | |
| 1089 | /* |
| 1090 | * A new gid requires privilege, so we need to do this before setting |
| 1091 | * the uid. |
| 1092 | */ |
| 1093 | if (td->o.gid != -1U && setgid(td->o.gid)) { |
| 1094 | td_verror(td, errno, "setgid"); |
| 1095 | goto err; |
| 1096 | } |
| 1097 | if (td->o.uid != -1U && setuid(td->o.uid)) { |
| 1098 | td_verror(td, errno, "setuid"); |
| 1099 | goto err; |
| 1100 | } |
| 1101 | |
| 1102 | /* |
| 1103 | * If we have a gettimeofday() thread, make sure we exclude that |
| 1104 | * thread from this job |
| 1105 | */ |
| 1106 | if (td->o.gtod_cpu) |
| 1107 | fio_cpu_clear(&td->o.cpumask, td->o.gtod_cpu); |
| 1108 | |
| 1109 | /* |
| 1110 | * Set affinity first, in case it has an impact on the memory |
| 1111 | * allocations. |
| 1112 | */ |
| 1113 | if (td->o.cpumask_set && fio_setaffinity(td->pid, td->o.cpumask) == -1) { |
| 1114 | td_verror(td, errno, "cpu_set_affinity"); |
| 1115 | goto err; |
| 1116 | } |
| 1117 | |
Jens Axboe | 67bf982 | 2013-01-10 11:23:19 +0100 | [diff] [blame] | 1118 | #ifdef CONFIG_LIBNUMA |
Yufei Ren | d0b937e | 2012-10-19 23:11:52 -0400 | [diff] [blame] | 1119 | /* numa node setup */ |
| 1120 | if (td->o.numa_cpumask_set || td->o.numa_memmask_set) { |
| 1121 | int ret; |
| 1122 | |
| 1123 | if (numa_available() < 0) { |
| 1124 | td_verror(td, errno, "Does not support NUMA API\n"); |
| 1125 | goto err; |
| 1126 | } |
| 1127 | |
| 1128 | if (td->o.numa_cpumask_set) { |
| 1129 | ret = numa_run_on_node_mask(td->o.numa_cpunodesmask); |
| 1130 | if (ret == -1) { |
| 1131 | td_verror(td, errno, \ |
| 1132 | "numa_run_on_node_mask failed\n"); |
| 1133 | goto err; |
| 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | if (td->o.numa_memmask_set) { |
| 1138 | |
| 1139 | switch (td->o.numa_mem_mode) { |
| 1140 | case MPOL_INTERLEAVE: |
| 1141 | numa_set_interleave_mask(td->o.numa_memnodesmask); |
| 1142 | break; |
| 1143 | case MPOL_BIND: |
| 1144 | numa_set_membind(td->o.numa_memnodesmask); |
| 1145 | break; |
| 1146 | case MPOL_LOCAL: |
| 1147 | numa_set_localalloc(); |
| 1148 | break; |
| 1149 | case MPOL_PREFERRED: |
| 1150 | numa_set_preferred(td->o.numa_mem_prefer_node); |
| 1151 | break; |
| 1152 | case MPOL_DEFAULT: |
| 1153 | default: |
| 1154 | break; |
| 1155 | } |
| 1156 | |
| 1157 | } |
| 1158 | } |
| 1159 | #endif |
| 1160 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1161 | /* |
| 1162 | * May alter parameters that init_io_u() will use, so we need to |
| 1163 | * do this first. |
| 1164 | */ |
| 1165 | if (init_iolog(td)) |
| 1166 | goto err; |
| 1167 | |
| 1168 | if (init_io_u(td)) |
| 1169 | goto err; |
| 1170 | |
| 1171 | if (td->o.verify_async && verify_async_init(td)) |
| 1172 | goto err; |
| 1173 | |
| 1174 | if (td->ioprio_set) { |
| 1175 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) { |
| 1176 | td_verror(td, errno, "ioprio_set"); |
| 1177 | goto err; |
| 1178 | } |
| 1179 | } |
| 1180 | |
Tao Ma | 5d89ff7 | 2012-04-26 12:15:46 +0200 | [diff] [blame] | 1181 | if (td->o.cgroup && cgroup_setup(td, cgroup_list, &cgroup_mnt)) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1182 | goto err; |
| 1183 | |
Bruce Cran | 649c10c | 2012-02-20 07:59:06 +0100 | [diff] [blame] | 1184 | errno = 0; |
| 1185 | if (nice(td->o.nice) == -1 && errno != 0) { |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1186 | td_verror(td, errno, "nice"); |
| 1187 | goto err; |
| 1188 | } |
| 1189 | |
| 1190 | if (td->o.ioscheduler && switch_ioscheduler(td)) |
| 1191 | goto err; |
| 1192 | |
| 1193 | if (!td->o.create_serialize && setup_files(td)) |
| 1194 | goto err; |
| 1195 | |
| 1196 | if (td_io_init(td)) |
| 1197 | goto err; |
| 1198 | |
| 1199 | if (init_random_map(td)) |
| 1200 | goto err; |
| 1201 | |
| 1202 | if (td->o.exec_prerun) { |
| 1203 | if (exec_string(td->o.exec_prerun)) |
| 1204 | goto err; |
| 1205 | } |
| 1206 | |
| 1207 | if (td->o.pre_read) { |
| 1208 | if (pre_read_files(td) < 0) |
| 1209 | goto err; |
| 1210 | } |
| 1211 | |
| 1212 | fio_gettime(&td->epoch, NULL); |
| 1213 | getrusage(RUSAGE_SELF, &td->ru_start); |
| 1214 | |
| 1215 | clear_state = 0; |
| 1216 | while (keep_running(td)) { |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 1217 | uint64_t verify_bytes; |
| 1218 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1219 | fio_gettime(&td->start, NULL); |
| 1220 | memcpy(&td->bw_sample_time, &td->start, sizeof(td->start)); |
| 1221 | memcpy(&td->iops_sample_time, &td->start, sizeof(td->start)); |
| 1222 | memcpy(&td->tv_cache, &td->start, sizeof(td->start)); |
| 1223 | |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1224 | if (td->o.ratemin[DDIR_READ] || td->o.ratemin[DDIR_WRITE] || |
| 1225 | td->o.ratemin[DDIR_TRIM]) { |
| 1226 | memcpy(&td->lastrate[DDIR_READ], &td->bw_sample_time, |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1227 | sizeof(td->bw_sample_time)); |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1228 | memcpy(&td->lastrate[DDIR_WRITE], &td->bw_sample_time, |
| 1229 | sizeof(td->bw_sample_time)); |
| 1230 | memcpy(&td->lastrate[DDIR_TRIM], &td->bw_sample_time, |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1231 | sizeof(td->bw_sample_time)); |
| 1232 | } |
| 1233 | |
| 1234 | if (clear_state) |
| 1235 | clear_io_state(td); |
| 1236 | |
| 1237 | prune_io_piece_log(td); |
| 1238 | |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 1239 | verify_bytes = do_io(td); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1240 | |
| 1241 | clear_state = 1; |
| 1242 | |
| 1243 | if (td_read(td) && td->io_bytes[DDIR_READ]) { |
| 1244 | elapsed = utime_since_now(&td->start); |
| 1245 | td->ts.runtime[DDIR_READ] += elapsed; |
| 1246 | } |
| 1247 | if (td_write(td) && td->io_bytes[DDIR_WRITE]) { |
| 1248 | elapsed = utime_since_now(&td->start); |
| 1249 | td->ts.runtime[DDIR_WRITE] += elapsed; |
| 1250 | } |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1251 | if (td_trim(td) && td->io_bytes[DDIR_TRIM]) { |
| 1252 | elapsed = utime_since_now(&td->start); |
| 1253 | td->ts.runtime[DDIR_TRIM] += elapsed; |
| 1254 | } |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1255 | |
| 1256 | if (td->error || td->terminate) |
| 1257 | break; |
| 1258 | |
| 1259 | if (!td->o.do_verify || |
| 1260 | td->o.verify == VERIFY_NONE || |
| 1261 | (td->io_ops->flags & FIO_UNIDIR)) |
| 1262 | continue; |
| 1263 | |
| 1264 | clear_io_state(td); |
| 1265 | |
| 1266 | fio_gettime(&td->start, NULL); |
| 1267 | |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame^] | 1268 | do_verify(td, verify_bytes); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1269 | |
| 1270 | td->ts.runtime[DDIR_READ] += utime_since_now(&td->start); |
| 1271 | |
| 1272 | if (td->error || td->terminate) |
| 1273 | break; |
| 1274 | } |
| 1275 | |
| 1276 | update_rusage_stat(td); |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1277 | td->ts.runtime[DDIR_READ] = (td->ts.runtime[DDIR_READ] + 999) / 1000; |
| 1278 | td->ts.runtime[DDIR_WRITE] = (td->ts.runtime[DDIR_WRITE] + 999) / 1000; |
| 1279 | td->ts.runtime[DDIR_TRIM] = (td->ts.runtime[DDIR_TRIM] + 999) / 1000; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1280 | td->ts.total_run_time = mtime_since_now(&td->epoch); |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1281 | td->ts.io_bytes[DDIR_READ] = td->io_bytes[DDIR_READ]; |
| 1282 | td->ts.io_bytes[DDIR_WRITE] = td->io_bytes[DDIR_WRITE]; |
| 1283 | td->ts.io_bytes[DDIR_TRIM] = td->io_bytes[DDIR_TRIM]; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1284 | |
| 1285 | fio_mutex_down(writeout_mutex); |
| 1286 | if (td->bw_log) { |
| 1287 | if (td->o.bw_log_file) { |
| 1288 | finish_log_named(td, td->bw_log, |
| 1289 | td->o.bw_log_file, "bw"); |
| 1290 | } else |
| 1291 | finish_log(td, td->bw_log, "bw"); |
| 1292 | } |
| 1293 | if (td->lat_log) { |
| 1294 | if (td->o.lat_log_file) { |
| 1295 | finish_log_named(td, td->lat_log, |
| 1296 | td->o.lat_log_file, "lat"); |
| 1297 | } else |
| 1298 | finish_log(td, td->lat_log, "lat"); |
| 1299 | } |
| 1300 | if (td->slat_log) { |
| 1301 | if (td->o.lat_log_file) { |
| 1302 | finish_log_named(td, td->slat_log, |
| 1303 | td->o.lat_log_file, "slat"); |
| 1304 | } else |
| 1305 | finish_log(td, td->slat_log, "slat"); |
| 1306 | } |
| 1307 | if (td->clat_log) { |
| 1308 | if (td->o.lat_log_file) { |
| 1309 | finish_log_named(td, td->clat_log, |
| 1310 | td->o.lat_log_file, "clat"); |
| 1311 | } else |
| 1312 | finish_log(td, td->clat_log, "clat"); |
| 1313 | } |
| 1314 | if (td->iops_log) { |
| 1315 | if (td->o.iops_log_file) { |
| 1316 | finish_log_named(td, td->iops_log, |
| 1317 | td->o.iops_log_file, "iops"); |
| 1318 | } else |
| 1319 | finish_log(td, td->iops_log, "iops"); |
| 1320 | } |
| 1321 | |
| 1322 | fio_mutex_up(writeout_mutex); |
| 1323 | if (td->o.exec_postrun) |
| 1324 | exec_string(td->o.exec_postrun); |
| 1325 | |
| 1326 | if (exitall_on_terminate) |
| 1327 | fio_terminate_threads(td->groupid); |
| 1328 | |
| 1329 | err: |
| 1330 | if (td->error) |
| 1331 | log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error, |
| 1332 | td->verror); |
| 1333 | |
| 1334 | if (td->o.verify_async) |
| 1335 | verify_async_exit(td); |
| 1336 | |
| 1337 | close_and_free_files(td); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1338 | cleanup_io_u(td); |
Bruce Cran | 32dbca2 | 2012-12-06 20:32:40 +0100 | [diff] [blame] | 1339 | close_ioengine(td); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1340 | cgroup_shutdown(td, &cgroup_mnt); |
| 1341 | |
| 1342 | if (td->o.cpumask_set) { |
| 1343 | int ret = fio_cpuset_exit(&td->o.cpumask); |
| 1344 | |
| 1345 | td_verror(td, ret, "fio_cpuset_exit"); |
| 1346 | } |
| 1347 | |
| 1348 | /* |
| 1349 | * do this very late, it will log file closing as well |
| 1350 | */ |
| 1351 | if (td->o.write_iolog_file) |
| 1352 | write_iolog_close(td); |
| 1353 | |
| 1354 | td_set_runstate(td, TD_EXITED); |
Bruce Cran | e43606c | 2012-02-20 09:34:24 +0100 | [diff] [blame] | 1355 | return (void *) (uintptr_t) td->error; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1356 | } |
| 1357 | |
| 1358 | |
| 1359 | /* |
| 1360 | * We cannot pass the td data into a forked process, so attach the td and |
| 1361 | * pass it to the thread worker. |
| 1362 | */ |
| 1363 | static int fork_main(int shmid, int offset) |
| 1364 | { |
| 1365 | struct thread_data *td; |
| 1366 | void *data, *ret; |
| 1367 | |
| 1368 | #ifndef __hpux |
| 1369 | data = shmat(shmid, NULL, 0); |
| 1370 | if (data == (void *) -1) { |
| 1371 | int __err = errno; |
| 1372 | |
| 1373 | perror("shmat"); |
| 1374 | return __err; |
| 1375 | } |
| 1376 | #else |
| 1377 | /* |
| 1378 | * HP-UX inherits shm mappings? |
| 1379 | */ |
| 1380 | data = threads; |
| 1381 | #endif |
| 1382 | |
| 1383 | td = data + offset * sizeof(struct thread_data); |
| 1384 | ret = thread_main(td); |
| 1385 | shmdt(data); |
Bruce Cran | e43606c | 2012-02-20 09:34:24 +0100 | [diff] [blame] | 1386 | return (int) (uintptr_t) ret; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1387 | } |
| 1388 | |
| 1389 | /* |
| 1390 | * Run over the job map and reap the threads that have exited, if any. |
| 1391 | */ |
| 1392 | static void reap_threads(unsigned int *nr_running, unsigned int *t_rate, |
| 1393 | unsigned int *m_rate) |
| 1394 | { |
| 1395 | struct thread_data *td; |
| 1396 | unsigned int cputhreads, realthreads, pending; |
| 1397 | int i, status, ret; |
| 1398 | |
| 1399 | /* |
| 1400 | * reap exited threads (TD_EXITED -> TD_REAPED) |
| 1401 | */ |
| 1402 | realthreads = pending = cputhreads = 0; |
| 1403 | for_each_td(td, i) { |
| 1404 | int flags = 0; |
| 1405 | |
| 1406 | /* |
| 1407 | * ->io_ops is NULL for a thread that has closed its |
| 1408 | * io engine |
| 1409 | */ |
| 1410 | if (td->io_ops && !strcmp(td->io_ops->name, "cpuio")) |
| 1411 | cputhreads++; |
| 1412 | else |
| 1413 | realthreads++; |
| 1414 | |
| 1415 | if (!td->pid) { |
| 1416 | pending++; |
| 1417 | continue; |
| 1418 | } |
| 1419 | if (td->runstate == TD_REAPED) |
| 1420 | continue; |
| 1421 | if (td->o.use_thread) { |
| 1422 | if (td->runstate == TD_EXITED) { |
| 1423 | td_set_runstate(td, TD_REAPED); |
| 1424 | goto reaped; |
| 1425 | } |
| 1426 | continue; |
| 1427 | } |
| 1428 | |
| 1429 | flags = WNOHANG; |
| 1430 | if (td->runstate == TD_EXITED) |
| 1431 | flags = 0; |
| 1432 | |
| 1433 | /* |
| 1434 | * check if someone quit or got killed in an unusual way |
| 1435 | */ |
| 1436 | ret = waitpid(td->pid, &status, flags); |
| 1437 | if (ret < 0) { |
| 1438 | if (errno == ECHILD) { |
| 1439 | log_err("fio: pid=%d disappeared %d\n", |
| 1440 | (int) td->pid, td->runstate); |
Jens Axboe | a5e371a | 2012-04-02 09:47:09 -0700 | [diff] [blame] | 1441 | td->sig = ECHILD; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1442 | td_set_runstate(td, TD_REAPED); |
| 1443 | goto reaped; |
| 1444 | } |
| 1445 | perror("waitpid"); |
| 1446 | } else if (ret == td->pid) { |
| 1447 | if (WIFSIGNALED(status)) { |
| 1448 | int sig = WTERMSIG(status); |
| 1449 | |
Jens Axboe | 36d80bc | 2012-11-30 21:46:06 +0100 | [diff] [blame] | 1450 | if (sig != SIGTERM && sig != SIGUSR2) |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1451 | log_err("fio: pid=%d, got signal=%d\n", |
| 1452 | (int) td->pid, sig); |
Jens Axboe | a5e371a | 2012-04-02 09:47:09 -0700 | [diff] [blame] | 1453 | td->sig = sig; |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1454 | td_set_runstate(td, TD_REAPED); |
| 1455 | goto reaped; |
| 1456 | } |
| 1457 | if (WIFEXITED(status)) { |
| 1458 | if (WEXITSTATUS(status) && !td->error) |
| 1459 | td->error = WEXITSTATUS(status); |
| 1460 | |
| 1461 | td_set_runstate(td, TD_REAPED); |
| 1462 | goto reaped; |
| 1463 | } |
| 1464 | } |
| 1465 | |
| 1466 | /* |
| 1467 | * thread is not dead, continue |
| 1468 | */ |
| 1469 | pending++; |
| 1470 | continue; |
| 1471 | reaped: |
| 1472 | (*nr_running)--; |
Jens Axboe | 342f4be | 2012-09-14 08:59:20 +0200 | [diff] [blame] | 1473 | (*m_rate) -= ddir_rw_sum(td->o.ratemin); |
| 1474 | (*t_rate) -= ddir_rw_sum(td->o.rate); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1475 | if (!td->pid) |
| 1476 | pending--; |
| 1477 | |
| 1478 | if (td->error) |
| 1479 | exit_value++; |
| 1480 | |
| 1481 | done_secs += mtime_since_now(&td->epoch) / 1000; |
| 1482 | } |
| 1483 | |
| 1484 | if (*nr_running == cputhreads && !pending && realthreads) |
| 1485 | fio_terminate_threads(TERMINATE_ALL); |
| 1486 | } |
| 1487 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1488 | /* |
| 1489 | * Main function for kicking off and reaping jobs, as needed. |
| 1490 | */ |
| 1491 | static void run_threads(void) |
| 1492 | { |
| 1493 | struct thread_data *td; |
| 1494 | unsigned long spent; |
| 1495 | unsigned int i, todo, nr_running, m_rate, t_rate, nr_started; |
| 1496 | |
| 1497 | if (fio_pin_memory()) |
| 1498 | return; |
| 1499 | |
| 1500 | if (fio_gtod_offload && fio_start_gtod_thread()) |
| 1501 | return; |
| 1502 | |
| 1503 | set_sig_handlers(); |
| 1504 | |
Jens Axboe | f3afa57 | 2012-09-17 13:34:16 +0200 | [diff] [blame] | 1505 | if (output_format == FIO_OUTPUT_NORMAL) { |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1506 | log_info("Starting "); |
| 1507 | if (nr_thread) |
| 1508 | log_info("%d thread%s", nr_thread, |
| 1509 | nr_thread > 1 ? "s" : ""); |
| 1510 | if (nr_process) { |
| 1511 | if (nr_thread) |
| 1512 | log_info(" and "); |
| 1513 | log_info("%d process%s", nr_process, |
| 1514 | nr_process > 1 ? "es" : ""); |
| 1515 | } |
| 1516 | log_info("\n"); |
| 1517 | fflush(stdout); |
| 1518 | } |
| 1519 | |
| 1520 | todo = thread_number; |
| 1521 | nr_running = 0; |
| 1522 | nr_started = 0; |
| 1523 | m_rate = t_rate = 0; |
| 1524 | |
| 1525 | for_each_td(td, i) { |
| 1526 | print_status_init(td->thread_number - 1); |
| 1527 | |
| 1528 | if (!td->o.create_serialize) |
| 1529 | continue; |
| 1530 | |
| 1531 | /* |
| 1532 | * do file setup here so it happens sequentially, |
| 1533 | * we don't want X number of threads getting their |
| 1534 | * client data interspersed on disk |
| 1535 | */ |
| 1536 | if (setup_files(td)) { |
| 1537 | exit_value++; |
| 1538 | if (td->error) |
| 1539 | log_err("fio: pid=%d, err=%d/%s\n", |
| 1540 | (int) td->pid, td->error, td->verror); |
| 1541 | td_set_runstate(td, TD_REAPED); |
| 1542 | todo--; |
| 1543 | } else { |
| 1544 | struct fio_file *f; |
| 1545 | unsigned int j; |
| 1546 | |
| 1547 | /* |
| 1548 | * for sharing to work, each job must always open |
| 1549 | * its own files. so close them, if we opened them |
| 1550 | * for creation |
| 1551 | */ |
| 1552 | for_each_file(td, f, j) { |
| 1553 | if (fio_file_open(f)) |
| 1554 | td_io_close_file(td, f); |
| 1555 | } |
| 1556 | } |
| 1557 | } |
| 1558 | |
| 1559 | set_genesis_time(); |
| 1560 | |
| 1561 | while (todo) { |
| 1562 | struct thread_data *map[REAL_MAX_JOBS]; |
| 1563 | struct timeval this_start; |
| 1564 | int this_jobs = 0, left; |
| 1565 | |
| 1566 | /* |
| 1567 | * create threads (TD_NOT_CREATED -> TD_CREATED) |
| 1568 | */ |
| 1569 | for_each_td(td, i) { |
| 1570 | if (td->runstate != TD_NOT_CREATED) |
| 1571 | continue; |
| 1572 | |
| 1573 | /* |
| 1574 | * never got a chance to start, killed by other |
| 1575 | * thread for some reason |
| 1576 | */ |
| 1577 | if (td->terminate) { |
| 1578 | todo--; |
| 1579 | continue; |
| 1580 | } |
| 1581 | |
| 1582 | if (td->o.start_delay) { |
| 1583 | spent = mtime_since_genesis(); |
| 1584 | |
| 1585 | if (td->o.start_delay * 1000 > spent) |
| 1586 | continue; |
| 1587 | } |
| 1588 | |
| 1589 | if (td->o.stonewall && (nr_started || nr_running)) { |
| 1590 | dprint(FD_PROCESS, "%s: stonewall wait\n", |
| 1591 | td->o.name); |
| 1592 | break; |
| 1593 | } |
| 1594 | |
| 1595 | init_disk_util(td); |
| 1596 | |
| 1597 | /* |
| 1598 | * Set state to created. Thread will transition |
| 1599 | * to TD_INITIALIZED when it's done setting up. |
| 1600 | */ |
| 1601 | td_set_runstate(td, TD_CREATED); |
| 1602 | map[this_jobs++] = td; |
| 1603 | nr_started++; |
| 1604 | |
| 1605 | if (td->o.use_thread) { |
| 1606 | int ret; |
| 1607 | |
| 1608 | dprint(FD_PROCESS, "will pthread_create\n"); |
| 1609 | ret = pthread_create(&td->thread, NULL, |
| 1610 | thread_main, td); |
| 1611 | if (ret) { |
| 1612 | log_err("pthread_create: %s\n", |
| 1613 | strerror(ret)); |
| 1614 | nr_started--; |
| 1615 | break; |
| 1616 | } |
| 1617 | ret = pthread_detach(td->thread); |
| 1618 | if (ret) |
| 1619 | log_err("pthread_detach: %s", |
| 1620 | strerror(ret)); |
| 1621 | } else { |
| 1622 | pid_t pid; |
| 1623 | dprint(FD_PROCESS, "will fork\n"); |
| 1624 | pid = fork(); |
| 1625 | if (!pid) { |
| 1626 | int ret = fork_main(shm_id, i); |
| 1627 | |
| 1628 | _exit(ret); |
| 1629 | } else if (i == fio_debug_jobno) |
| 1630 | *fio_debug_jobp = pid; |
| 1631 | } |
| 1632 | dprint(FD_MUTEX, "wait on startup_mutex\n"); |
| 1633 | if (fio_mutex_down_timeout(startup_mutex, 10)) { |
| 1634 | log_err("fio: job startup hung? exiting.\n"); |
| 1635 | fio_terminate_threads(TERMINATE_ALL); |
| 1636 | fio_abort = 1; |
| 1637 | nr_started--; |
| 1638 | break; |
| 1639 | } |
| 1640 | dprint(FD_MUTEX, "done waiting on startup_mutex\n"); |
| 1641 | } |
| 1642 | |
| 1643 | /* |
| 1644 | * Wait for the started threads to transition to |
| 1645 | * TD_INITIALIZED. |
| 1646 | */ |
| 1647 | fio_gettime(&this_start, NULL); |
| 1648 | left = this_jobs; |
| 1649 | while (left && !fio_abort) { |
| 1650 | if (mtime_since_now(&this_start) > JOB_START_TIMEOUT) |
| 1651 | break; |
| 1652 | |
| 1653 | usleep(100000); |
| 1654 | |
| 1655 | for (i = 0; i < this_jobs; i++) { |
| 1656 | td = map[i]; |
| 1657 | if (!td) |
| 1658 | continue; |
| 1659 | if (td->runstate == TD_INITIALIZED) { |
| 1660 | map[i] = NULL; |
| 1661 | left--; |
| 1662 | } else if (td->runstate >= TD_EXITED) { |
| 1663 | map[i] = NULL; |
| 1664 | left--; |
| 1665 | todo--; |
| 1666 | nr_running++; /* work-around... */ |
| 1667 | } |
| 1668 | } |
| 1669 | } |
| 1670 | |
| 1671 | if (left) { |
Jens Axboe | 4e87c37 | 2012-02-15 14:27:08 +0100 | [diff] [blame] | 1672 | log_err("fio: %d job%s failed to start\n", left, |
| 1673 | left > 1 ? "s" : ""); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1674 | for (i = 0; i < this_jobs; i++) { |
| 1675 | td = map[i]; |
| 1676 | if (!td) |
| 1677 | continue; |
| 1678 | kill(td->pid, SIGTERM); |
| 1679 | } |
| 1680 | break; |
| 1681 | } |
| 1682 | |
| 1683 | /* |
| 1684 | * start created threads (TD_INITIALIZED -> TD_RUNNING). |
| 1685 | */ |
| 1686 | for_each_td(td, i) { |
| 1687 | if (td->runstate != TD_INITIALIZED) |
| 1688 | continue; |
| 1689 | |
| 1690 | if (in_ramp_time(td)) |
| 1691 | td_set_runstate(td, TD_RAMP); |
| 1692 | else |
| 1693 | td_set_runstate(td, TD_RUNNING); |
| 1694 | nr_running++; |
| 1695 | nr_started--; |
Jens Axboe | 342f4be | 2012-09-14 08:59:20 +0200 | [diff] [blame] | 1696 | m_rate += ddir_rw_sum(td->o.ratemin); |
| 1697 | t_rate += ddir_rw_sum(td->o.rate); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1698 | todo--; |
| 1699 | fio_mutex_up(td->mutex); |
| 1700 | } |
| 1701 | |
| 1702 | reap_threads(&nr_running, &t_rate, &m_rate); |
| 1703 | |
| 1704 | if (todo) { |
| 1705 | if (is_backend) |
| 1706 | fio_server_idle_loop(); |
| 1707 | else |
| 1708 | usleep(100000); |
| 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | while (nr_running) { |
| 1713 | reap_threads(&nr_running, &t_rate, &m_rate); |
| 1714 | |
| 1715 | if (is_backend) |
| 1716 | fio_server_idle_loop(); |
| 1717 | else |
| 1718 | usleep(10000); |
| 1719 | } |
| 1720 | |
| 1721 | update_io_ticks(); |
| 1722 | fio_unpin_memory(); |
| 1723 | } |
| 1724 | |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1725 | void wait_for_disk_thread_exit(void) |
| 1726 | { |
| 1727 | fio_mutex_down(disk_thread_mutex); |
| 1728 | } |
| 1729 | |
Jens Axboe | 2735718 | 2012-09-27 11:31:50 +0200 | [diff] [blame] | 1730 | static void free_disk_util(void) |
| 1731 | { |
| 1732 | disk_util_start_exit(); |
| 1733 | wait_for_disk_thread_exit(); |
| 1734 | disk_util_prune_entries(); |
| 1735 | } |
| 1736 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1737 | static void *disk_thread_main(void *data) |
| 1738 | { |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1739 | int ret = 0; |
| 1740 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1741 | fio_mutex_up(startup_mutex); |
| 1742 | |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1743 | while (threads && !ret) { |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1744 | usleep(DISK_UTIL_MSEC * 1000); |
| 1745 | if (!threads) |
| 1746 | break; |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1747 | ret = update_io_ticks(); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1748 | |
| 1749 | if (!is_backend) |
| 1750 | print_thread_status(); |
| 1751 | } |
| 1752 | |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1753 | fio_mutex_up(disk_thread_mutex); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1754 | return NULL; |
| 1755 | } |
| 1756 | |
| 1757 | static int create_disk_util_thread(void) |
| 1758 | { |
| 1759 | int ret; |
| 1760 | |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1761 | setup_disk_util(); |
| 1762 | |
Jens Axboe | 521da52 | 2012-08-02 11:21:36 +0200 | [diff] [blame] | 1763 | disk_thread_mutex = fio_mutex_init(FIO_MUTEX_LOCKED); |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1764 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1765 | ret = pthread_create(&disk_util_thread, NULL, disk_thread_main, NULL); |
| 1766 | if (ret) { |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1767 | fio_mutex_remove(disk_thread_mutex); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1768 | log_err("Can't create disk util thread: %s\n", strerror(ret)); |
| 1769 | return 1; |
| 1770 | } |
| 1771 | |
| 1772 | ret = pthread_detach(disk_util_thread); |
| 1773 | if (ret) { |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1774 | fio_mutex_remove(disk_thread_mutex); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1775 | log_err("Can't detatch disk util thread: %s\n", strerror(ret)); |
| 1776 | return 1; |
| 1777 | } |
| 1778 | |
| 1779 | dprint(FD_MUTEX, "wait on startup_mutex\n"); |
| 1780 | fio_mutex_down(startup_mutex); |
| 1781 | dprint(FD_MUTEX, "done waiting on startup_mutex\n"); |
| 1782 | return 0; |
| 1783 | } |
| 1784 | |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1785 | int fio_backend(void) |
| 1786 | { |
| 1787 | struct thread_data *td; |
| 1788 | int i; |
| 1789 | |
| 1790 | if (exec_profile) { |
| 1791 | if (load_profile(exec_profile)) |
| 1792 | return 1; |
| 1793 | free(exec_profile); |
| 1794 | exec_profile = NULL; |
| 1795 | } |
| 1796 | if (!thread_number) |
| 1797 | return 0; |
| 1798 | |
| 1799 | if (write_bw_log) { |
| 1800 | setup_log(&agg_io_log[DDIR_READ], 0); |
| 1801 | setup_log(&agg_io_log[DDIR_WRITE], 0); |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1802 | setup_log(&agg_io_log[DDIR_TRIM], 0); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1803 | } |
| 1804 | |
Jens Axboe | 521da52 | 2012-08-02 11:21:36 +0200 | [diff] [blame] | 1805 | startup_mutex = fio_mutex_init(FIO_MUTEX_LOCKED); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1806 | if (startup_mutex == NULL) |
| 1807 | return 1; |
Jens Axboe | 521da52 | 2012-08-02 11:21:36 +0200 | [diff] [blame] | 1808 | writeout_mutex = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1809 | if (writeout_mutex == NULL) |
| 1810 | return 1; |
| 1811 | |
| 1812 | set_genesis_time(); |
| 1813 | create_disk_util_thread(); |
| 1814 | |
| 1815 | cgroup_list = smalloc(sizeof(*cgroup_list)); |
| 1816 | INIT_FLIST_HEAD(cgroup_list); |
| 1817 | |
| 1818 | run_threads(); |
| 1819 | |
| 1820 | if (!fio_abort) { |
| 1821 | show_run_stats(); |
| 1822 | if (write_bw_log) { |
| 1823 | __finish_log(agg_io_log[DDIR_READ], "agg-read_bw.log"); |
| 1824 | __finish_log(agg_io_log[DDIR_WRITE], |
| 1825 | "agg-write_bw.log"); |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1826 | __finish_log(agg_io_log[DDIR_TRIM], |
| 1827 | "agg-write_bw.log"); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1828 | } |
| 1829 | } |
| 1830 | |
| 1831 | for_each_td(td, i) |
| 1832 | fio_options_free(td); |
| 1833 | |
Jens Axboe | a462bae | 2012-03-30 08:33:27 +0200 | [diff] [blame] | 1834 | free_disk_util(); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1835 | cgroup_kill(cgroup_list); |
| 1836 | sfree(cgroup_list); |
| 1837 | sfree(cgroup_mnt); |
| 1838 | |
| 1839 | fio_mutex_remove(startup_mutex); |
| 1840 | fio_mutex_remove(writeout_mutex); |
Jens Axboe | 9ec7779 | 2012-08-02 08:27:41 +0200 | [diff] [blame] | 1841 | fio_mutex_remove(disk_thread_mutex); |
Jens Axboe | 2e1df07 | 2012-02-09 11:15:02 +0100 | [diff] [blame] | 1842 | return exit_value; |
| 1843 | } |