X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=backend.c;h=fe1599706fcdcb32b0990b1e840b3259448396ab;hp=c051c13c1aea34b2ab8666927eccc9d7ea1d746a;hb=8b6a404cdd2c40715885e562416c3db039912773;hpb=1651e4310feb3eab7c7c8cf0bd23d159cb410628 diff --git a/backend.c b/backend.c index c051c13c..fe159970 100644 --- a/backend.c +++ b/backend.c @@ -76,9 +76,6 @@ int shm_id = 0; int temp_stall_ts; unsigned long done_secs = 0; -#define PAGE_ALIGN(buf) \ - (char *) (((uintptr_t) (buf) + page_mask) & ~page_mask) - #define JOB_START_TIMEOUT (5 * 1000) static void sig_int(int sig) @@ -139,7 +136,7 @@ static void set_sig_handlers(void) /* * Check if we are above the minimum rate given. */ -static bool __check_min_rate(struct thread_data *td, struct timeval *now, +static bool __check_min_rate(struct thread_data *td, struct timespec *now, enum fio_ddir ddir) { unsigned long long bytes = 0; @@ -180,8 +177,8 @@ static bool __check_min_rate(struct thread_data *td, struct timeval *now, * check bandwidth specified rate */ if (bytes < td->rate_bytes[ddir]) { - log_err("%s: min rate %u not met\n", td->o.name, - ratemin); + log_err("%s: rate_min=%uB/s not met, only transferred %lluB\n", + td->o.name, ratemin, bytes); return true; } else { if (spent) @@ -191,9 +188,8 @@ static bool __check_min_rate(struct thread_data *td, struct timeval *now, if (rate < ratemin || bytes < td->rate_bytes[ddir]) { - log_err("%s: min rate %u not met, got" - " %luKB/sec\n", td->o.name, - ratemin, rate); + log_err("%s: rate_min=%uB/s not met, got %luB/s\n", + td->o.name, ratemin, rate); return true; } } @@ -202,8 +198,8 @@ static bool __check_min_rate(struct thread_data *td, struct timeval *now, * checks iops specified rate */ if (iops < rate_iops) { - log_err("%s: min iops rate %u not met\n", - td->o.name, rate_iops); + log_err("%s: rate_iops_min=%u not met, only performed %lu IOs\n", + td->o.name, rate_iops, iops); return true; } else { if (spent) @@ -213,9 +209,8 @@ static bool __check_min_rate(struct thread_data *td, struct timeval *now, if (rate < rate_iops_min || iops < td->rate_blocks[ddir]) { - log_err("%s: min iops rate %u not met," - " got %lu\n", td->o.name, - rate_iops_min, rate); + log_err("%s: rate_iops_min=%u not met, got %lu IOPS\n", + td->o.name, rate_iops_min, rate); return true; } } @@ -228,7 +223,7 @@ static bool __check_min_rate(struct thread_data *td, struct timeval *now, return false; } -static bool check_min_rate(struct thread_data *td, struct timeval *now) +static bool check_min_rate(struct thread_data *td, struct timespec *now) { bool ret = false; @@ -340,18 +335,18 @@ static int fio_file_fsync(struct thread_data *td, struct fio_file *f) return ret; } -static inline void __update_tv_cache(struct thread_data *td) +static inline void __update_ts_cache(struct thread_data *td) { - fio_gettime(&td->tv_cache, NULL); + fio_gettime(&td->ts_cache, NULL); } -static inline void update_tv_cache(struct thread_data *td) +static inline void update_ts_cache(struct thread_data *td) { - if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask) - __update_tv_cache(td); + if ((++td->ts_cache_nr & td->ts_cache_mask) == td->ts_cache_mask) + __update_ts_cache(td); } -static inline bool runtime_exceeded(struct thread_data *td, struct timeval *t) +static inline bool runtime_exceeded(struct thread_data *td, struct timespec *t) { if (in_ramp_time(td)) return false; @@ -435,17 +430,14 @@ static void check_update_rusage(struct thread_data *td) } } -static int wait_for_completions(struct thread_data *td, struct timeval *time) +static int wait_for_completions(struct thread_data *td, struct timespec *time) { const int full = queue_full(td); int min_evts = 0; int ret; - if (td->flags & TD_F_REGROW_LOGS) { - ret = io_u_quiesce(td); - regrow_logs(td); - return ret; - } + if (td->flags & TD_F_REGROW_LOGS) + return io_u_quiesce(td); /* * if the queue is full, we MUST reap at least 1 event @@ -470,7 +462,7 @@ static int wait_for_completions(struct thread_data *td, struct timeval *time) int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret, enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify, - struct timeval *comp_time) + struct timespec *comp_time) { int ret2; @@ -641,12 +633,12 @@ static void do_verify(struct thread_data *td, uint64_t verify_bytes) enum fio_ddir ddir; int full; - update_tv_cache(td); + update_ts_cache(td); check_update_rusage(td); - if (runtime_exceeded(td, &td->tv_cache)) { - __update_tv_cache(td); - if (runtime_exceeded(td, &td->tv_cache)) { + if (runtime_exceeded(td, &td->ts_cache)) { + __update_ts_cache(td); + if (runtime_exceeded(td, &td->ts_cache)) { fio_mark_td_terminate(td); break; } @@ -771,21 +763,21 @@ static bool exceeds_number_ios(struct thread_data *td) return number_ios >= (td->o.number_ios * td->loops); } -static bool io_issue_bytes_exceeded(struct thread_data *td) +static bool io_bytes_exceeded(struct thread_data *td, uint64_t *this_bytes) { unsigned long long bytes, limit; if (td_rw(td)) - bytes = td->io_issue_bytes[DDIR_READ] + td->io_issue_bytes[DDIR_WRITE]; + bytes = this_bytes[DDIR_READ] + this_bytes[DDIR_WRITE]; else if (td_write(td)) - bytes = td->io_issue_bytes[DDIR_WRITE]; + bytes = this_bytes[DDIR_WRITE]; else if (td_read(td)) - bytes = td->io_issue_bytes[DDIR_READ]; + bytes = this_bytes[DDIR_READ]; else - bytes = td->io_issue_bytes[DDIR_TRIM]; + bytes = this_bytes[DDIR_TRIM]; - if (td->o.io_limit) - limit = td->o.io_limit; + if (td->o.io_size) + limit = td->o.io_size; else limit = td->o.size; @@ -793,26 +785,14 @@ static bool io_issue_bytes_exceeded(struct thread_data *td) return bytes >= limit || exceeds_number_ios(td); } -static bool io_complete_bytes_exceeded(struct thread_data *td) +static bool io_issue_bytes_exceeded(struct thread_data *td) { - unsigned long long bytes, limit; - - if (td_rw(td)) - bytes = td->this_io_bytes[DDIR_READ] + td->this_io_bytes[DDIR_WRITE]; - else if (td_write(td)) - bytes = td->this_io_bytes[DDIR_WRITE]; - else if (td_read(td)) - bytes = td->this_io_bytes[DDIR_READ]; - else - bytes = td->this_io_bytes[DDIR_TRIM]; - - if (td->o.io_limit) - limit = td->o.io_limit; - else - limit = td->o.size; + return io_bytes_exceeded(td, td->io_issue_bytes); +} - limit *= td->loops; - return bytes >= limit || exceeds_number_ios(td); +static bool io_complete_bytes_exceeded(struct thread_data *td) +{ + return io_bytes_exceeded(td, td->this_io_bytes); } /* @@ -831,13 +811,14 @@ static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir) uint64_t val; iops = bps / td->o.bs[ddir]; val = (int64_t) (1000000 / iops) * - -logf(__rand_0_1(&td->poisson_state)); + -logf(__rand_0_1(&td->poisson_state[ddir])); if (val) { - dprint(FD_RATE, "poisson rate iops=%llu\n", - (unsigned long long) 1000000 / val); + dprint(FD_RATE, "poisson rate iops=%llu, ddir=%d\n", + (unsigned long long) 1000000 / val, + ddir); } - td->last_usec += val; - return td->last_usec; + td->last_usec[ddir] += val; + return td->last_usec[ddir]; } else if (bps) { secs = bytes / bps; remainder = bytes % bps; @@ -871,11 +852,11 @@ static void do_io(struct thread_data *td, uint64_t *bytes_done) total_bytes = td->o.size; /* - * Allow random overwrite workloads to write up to io_limit + * Allow random overwrite workloads to write up to io_size * before starting verification phase as 'size' doesn't apply. */ if (td_write(td) && td_random(td) && td->o.norandommap) - total_bytes = max(total_bytes, (uint64_t) td->o.io_limit); + total_bytes = max(total_bytes, (uint64_t) td->o.io_size); /* * If verify_backlog is enabled, we'll run the verify in this * handler as well. For that case, we may need up to twice the @@ -893,7 +874,7 @@ static void do_io(struct thread_data *td, uint64_t *bytes_done) while ((td->o.read_iolog_file && !flist_empty(&td->io_log_list)) || (!flist_empty(&td->trim_list)) || !io_issue_bytes_exceeded(td) || td->o.time_based) { - struct timeval comp_time; + struct timespec comp_time; struct io_u *io_u; int full; enum fio_ddir ddir; @@ -903,11 +884,11 @@ static void do_io(struct thread_data *td, uint64_t *bytes_done) if (td->terminate || td->done) break; - update_tv_cache(td); + update_ts_cache(td); - if (runtime_exceeded(td, &td->tv_cache)) { - __update_tv_cache(td); - if (runtime_exceeded(td, &td->tv_cache)) { + if (runtime_exceeded(td, &td->ts_cache)) { + __update_ts_cache(td); + if (runtime_exceeded(td, &td->ts_cache)) { fio_mark_td_terminate(td); break; } @@ -1024,7 +1005,7 @@ reap: if (ret < 0) break; if (!ddir_rw_sum(td->bytes_done) && - !(td->io_ops->flags & FIO_NOIO)) + !td_ioengine_flagged(td, FIO_NOIO)) continue; if (!in_ramp_time(td) && should_check_rate(td)) { @@ -1175,7 +1156,7 @@ static int init_io_u(struct thread_data *td) td->orig_buffer_size = (unsigned long long) max_bs * (unsigned long long) max_units; - if ((td->io_ops->flags & FIO_NOIO) || !(td_read(td) || td_write(td))) + if (td_ioengine_flagged(td, FIO_NOIO) || !(td_read(td) || td_write(td))) data_xfer = 0; err = 0; @@ -1195,7 +1176,7 @@ static int init_io_u(struct thread_data *td) * lucky and the allocator gives us an aligned address. */ if (td->o.odirect || td->o.mem_align || td->o.oatomic || - (td->io_ops->flags & FIO_RAWIO)) + td_ioengine_flagged(td, FIO_RAWIO)) td->orig_buffer_size += page_mask + td->o.mem_align; if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) { @@ -1214,8 +1195,8 @@ static int init_io_u(struct thread_data *td) return 1; if (td->o.odirect || td->o.mem_align || td->o.oatomic || - (td->io_ops->flags & FIO_RAWIO)) - p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align; + td_ioengine_flagged(td, FIO_RAWIO)) + p = PTR_ALIGN(td->orig_buffer, page_mask) + td->o.mem_align; else p = td->orig_buffer; @@ -1281,6 +1262,10 @@ static int init_io_u(struct thread_data *td) return 0; } +/* + * This function is Linux specific. + * FIO_HAVE_IOSCHED_SWITCH enabled currently means it's Linux. + */ static int switch_ioscheduler(struct thread_data *td) { #ifdef FIO_HAVE_IOSCHED_SWITCH @@ -1288,10 +1273,11 @@ static int switch_ioscheduler(struct thread_data *td) FILE *f; int ret; - if (td->io_ops->flags & FIO_DISKLESSIO) + if (td_ioengine_flagged(td, FIO_DISKLESSIO)) return 0; - sprintf(tmp, "%s/queue/scheduler", td->sysfs_root); + assert(td->files && td->files[0]); + sprintf(tmp, "%s/queue/scheduler", td->files[0]->du->sysfs_root); f = fopen(tmp, "r+"); if (!f) { @@ -1370,8 +1356,8 @@ static bool keep_running(struct thread_data *td) if (exceeds_number_ios(td)) return false; - if (td->o.io_limit) - limit = td->o.io_limit; + if (td->o.io_size) + limit = td->o.io_size; else limit = td->o.size; @@ -1379,14 +1365,14 @@ static bool keep_running(struct thread_data *td) uint64_t diff; /* - * If the difference is less than the minimum IO size, we + * If the difference is less than the maximum IO size, we * are done. */ diff = limit - ddir_rw_sum(td->io_bytes); if (diff < td_max_bs(td)) return false; - if (fio_files_done(td) && !td->o.io_limit) + if (fio_files_done(td) && !td->o.io_size) return false; return true; @@ -1471,6 +1457,8 @@ static void *thread_main(void *data) struct thread_data *td = fd->td; struct thread_options *o = &td->o; struct sk_out *sk_out = fd->sk_out; + uint64_t bytes_done[DDIR_RWDIR_CNT]; + int deadlock_loop_cnt; int clear_state; int ret; @@ -1675,10 +1663,11 @@ static void *thread_main(void *data) if (rate_submit_init(td, sk_out)) goto err; - fio_gettime(&td->epoch, NULL); + set_epoch_time(td, o->log_unix_epoch); fio_getrusage(&td->ru_start); memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch)); memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch)); + memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch)); if (o->ratemin[DDIR_READ] || o->ratemin[DDIR_WRITE] || o->ratemin[DDIR_TRIM]) { @@ -1690,12 +1679,14 @@ static void *thread_main(void *data) sizeof(td->bw_sample_time)); } + memset(bytes_done, 0, sizeof(bytes_done)); clear_state = 0; + while (keep_running(td)) { uint64_t verify_bytes; fio_gettime(&td->start, NULL); - memcpy(&td->tv_cache, &td->start, sizeof(td->start)); + memcpy(&td->ts_cache, &td->start, sizeof(td->start)); if (clear_state) { clear_io_state(td, 0); @@ -1706,11 +1697,9 @@ static void *thread_main(void *data) prune_io_piece_log(td); - if (td->o.verify_only && (td_write(td) || td_rw(td))) + if (td->o.verify_only && td_write(td)) verify_bytes = do_dry_run(td); else { - uint64_t bytes_done[DDIR_RWDIR_CNT]; - do_io(td, bytes_done); if (!ddir_rw_sum(bytes_done)) { @@ -1722,6 +1711,14 @@ static void *thread_main(void *data) } } + /* + * If we took too long to shut down, the main thread could + * already consider us reaped/exited. If that happens, break + * out and clean up. + */ + if (td->runstate >= TD_EXITED) + break; + clear_state = 1; /* @@ -1731,9 +1728,19 @@ static void *thread_main(void *data) * the rusage_sem, which would never get upped because * this thread is waiting for the stat mutex. */ - check_update_rusage(td); + deadlock_loop_cnt = 0; + do { + check_update_rusage(td); + if (!fio_mutex_down_trylock(stat_mutex)) + break; + usleep(1000); + if (deadlock_loop_cnt++ > 5000) { + log_err("fio seems to be stuck grabbing stat_mutex, forcibly exiting\n"); + td->error = EDEADLK; + goto err; + } + } while (1); - fio_mutex_down(stat_mutex); if (td_read(td) && td->io_bytes[DDIR_READ]) update_runtime(td, elapsed_us, DDIR_READ); if (td_write(td) && td->io_bytes[DDIR_WRITE]) @@ -1748,7 +1755,7 @@ static void *thread_main(void *data) if (!o->do_verify || o->verify == VERIFY_NONE || - (td->io_ops->flags & FIO_UNIDIR)) + td_ioengine_flagged(td, FIO_UNIDIR)) continue; clear_io_state(td, 0); @@ -1771,6 +1778,18 @@ static void *thread_main(void *data) break; } + /* + * If td ended up with no I/O when it should have had, + * then something went wrong unless FIO_NOIO or FIO_DISKLESSIO. + * (Are we not missing other flags that can be ignored ?) + */ + if ((td->o.size || td->o.io_size) && !ddir_rw_sum(bytes_done) && + !(td_ioengine_flagged(td, FIO_NOIO) || + td_ioengine_flagged(td, FIO_DISKLESSIO))) + log_err("%s: No I/O performed by %s, " + "perhaps try --debug=io option for details?\n", + td->o.name, td->io_ops->name); + td_set_runstate(td, TD_FINISHING); update_rusage_stat(td); @@ -1831,9 +1850,6 @@ err: if (o->write_iolog_file) write_iolog_close(td); - fio_mutex_remove(td->mutex); - td->mutex = NULL; - td_set_runstate(td, TD_EXITED); /* @@ -1846,19 +1862,11 @@ err: return (void *) (uintptr_t) td->error; } -static void dump_td_info(struct thread_data *td) -{ - log_err("fio: job '%s' (state=%d) hasn't exited in %lu seconds, it " - "appears to be stuck. Doing forceful exit of this job.\n", - td->o.name, td->runstate, - (unsigned long) time_since_now(&td->terminate_time)); -} - /* * Run over the job map and reap the threads that have exited, if any. */ -static void reap_threads(unsigned int *nr_running, unsigned int *t_rate, - unsigned int *m_rate) +static void reap_threads(unsigned int *nr_running, uint64_t *t_rate, + uint64_t *m_rate) { struct thread_data *td; unsigned int cputhreads, realthreads, pending; @@ -1938,7 +1946,11 @@ static void reap_threads(unsigned int *nr_running, unsigned int *t_rate, if (td->terminate && td->runstate < TD_FSYNCING && time_since_now(&td->terminate_time) >= FIO_REAP_TIMEOUT) { - dump_td_info(td); + log_err("fio: job '%s' (state=%d) hasn't exited in " + "%lu seconds, it appears to be stuck. Doing " + "forceful exit of this job.\n", + td->o.name, td->runstate, + (unsigned long) time_since_now(&td->terminate_time)); td_set_runstate(td, TD_REAPED); goto reaped; } @@ -2051,8 +2063,16 @@ static bool check_mount_writes(struct thread_data *td) if (!td_write(td) || td->o.allow_mounted_write) return false; + /* + * If FIO_HAVE_CHARDEV_SIZE is defined, it's likely that chrdevs + * are mkfs'd and mounted. + */ for_each_file(td, f, i) { - if (f->filetype != FIO_TYPE_BD) +#ifdef FIO_HAVE_CHARDEV_SIZE + if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR) +#else + if (f->filetype != FIO_TYPE_BLOCK) +#endif continue; if (device_is_mounted(f->file_name)) goto mounted; @@ -2060,7 +2080,7 @@ static bool check_mount_writes(struct thread_data *td) return false; mounted: - log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.", f->file_name); + log_err("fio: %s appears mounted, and 'allow_mounted_write' isn't set. Aborting.\n", f->file_name); return true; } @@ -2096,7 +2116,8 @@ static bool waitee_running(struct thread_data *me) static void run_threads(struct sk_out *sk_out) { struct thread_data *td; - unsigned int i, todo, nr_running, m_rate, t_rate, nr_started; + unsigned int i, todo, nr_running, nr_started; + uint64_t m_rate, t_rate; uint64_t spent; if (fio_gtod_offload && fio_start_gtod_thread()) @@ -2181,7 +2202,7 @@ reap: while (todo) { struct thread_data *map[REAL_MAX_JOBS]; - struct timeval this_start; + struct timespec this_start; int this_jobs = 0, left; struct fork_data *fd; @@ -2410,11 +2431,19 @@ int fio_backend(struct sk_out *sk_out) } for_each_td(td, i) { + if (td->ss.dur) { + if (td->ss.iops_data != NULL) { + free(td->ss.iops_data); + free(td->ss.bw_data); + } + } fio_options_free(td); if (td->rusage_sem) { fio_mutex_remove(td->rusage_sem); td->rusage_sem = NULL; } + fio_mutex_remove(td->mutex); + td->mutex = NULL; } free_disk_util();