* fio - the flexible io tester
*
* Copyright (C) 2005 Jens Axboe <axboe@suse.de>
- * Copyright (C) 2006 Jens Axboe <axboe@kernel.dk>
+ * Copyright (C) 2006
-2012 Jens Axboe <axboe@kernel.dk>
*
* The license below covers all files distributed with fio unless otherwise
* noted in the file itself.
*
*/
#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <limits.h>
-#include <signal.h>
-#include <time.h>
#include <locale.h>
-#include <assert.h>
#include <time.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <sys/mman.h>
#include "fio.h"
#include "hash.h"
#include "verify.h"
#include "trim.h"
#include "diskutil.h"
-#include "cgroup.h"
#include "profile.h"
#include "lib/rand.h"
#include "memalign.h"
+#include "client.h"
#include "server.h"
+#include "endian_check.h"
unsigned long page_mask;
unsigned long page_size;
-#define PAGE_ALIGN(buf) \
- (char *) (((unsigned long) (buf) + page_mask) & ~page_mask)
-
-int groupid = 0;
-int thread_number = 0;
-int nr_process = 0;
-int nr_thread = 0;
-int shm_id = 0;
-int temp_stall_ts;
-unsigned long done_secs = 0;
-
-static struct fio_mutex *startup_mutex;
-static struct fio_mutex *writeout_mutex;
-static volatile int fio_abort;
-static int exit_value;
-static pthread_t gtod_thread;
-static pthread_t disk_util_thread;
-static struct flist_head *cgroup_list;
-static char *cgroup_mnt;
-
-unsigned long arch_flags = 0;
-
-struct io_log *agg_io_log[2];
-
-#define TERMINATE_ALL (-1)
-#define JOB_START_TIMEOUT (5 * 1000)
-
-void td_set_runstate(struct thread_data *td, int runstate)
-{
- if (td->runstate == runstate)
- return;
-
- dprint(FD_PROCESS, "pid=%d: runstate %d -> %d\n", (int) td->pid,
- td->runstate, runstate);
- td->runstate = runstate;
-}
-
-static void terminate_threads(int group_id)
-{
- struct thread_data *td;
- int i;
-
- dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
-
- for_each_td(td, i) {
- if (group_id == TERMINATE_ALL || groupid == td->groupid) {
- dprint(FD_PROCESS, "setting terminate on %s/%d\n",
- td->o.name, (int) td->pid);
- td->terminate = 1;
- td->o.start_delay = 0;
-
- /*
- * if the thread is running, just let it exit
- */
- if (!td->pid)
- continue;
- else if (td->runstate < TD_RAMP)
- kill(td->pid, SIGTERM);
- else {
- struct ioengine_ops *ops = td->io_ops;
-
- if (ops && (ops->flags & FIO_SIGTERM))
- kill(td->pid, SIGTERM);
- }
- }
- }
-}
-
-static void sig_int(int sig)
-{
- if (threads) {
- log_info("\nfio: terminating on signal %d\n", sig);
- exit_backend = 1;
- fflush(stdout);
- exit_value = 128;
- terminate_threads(TERMINATE_ALL);
- }
-}
-
-static void *disk_thread_main(void *data)
-{
- fio_mutex_up(startup_mutex);
-
- while (threads) {
- usleep(DISK_UTIL_MSEC * 1000);
- if (!threads)
- break;
- update_io_ticks();
- print_thread_status();
- }
-
- return NULL;
-}
-
-static int create_disk_util_thread(void)
-{
- int ret;
-
- ret = pthread_create(&disk_util_thread, NULL, disk_thread_main, NULL);
- if (ret) {
- log_err("Can't create disk util thread: %s\n", strerror(ret));
- return 1;
- }
-
- ret = pthread_detach(disk_util_thread);
- if (ret) {
- log_err("Can't detatch disk util thread: %s\n", strerror(ret));
- return 1;
- }
-
- dprint(FD_MUTEX, "wait on startup_mutex\n");
- fio_mutex_down(startup_mutex);
- dprint(FD_MUTEX, "done waiting on startup_mutex\n");
- return 0;
-}
-
-static void set_sig_handlers(void)
-{
- struct sigaction act;
-
- memset(&act, 0, sizeof(act));
- act.sa_handler = sig_int;
- act.sa_flags = SA_RESTART;
- sigaction(SIGINT, &act, NULL);
-
- memset(&act, 0, sizeof(act));
- act.sa_handler = sig_int;
- act.sa_flags = SA_RESTART;
- sigaction(SIGTERM, &act, NULL);
-}
-
-/*
- * Check if we are above the minimum rate given.
- */
-static int __check_min_rate(struct thread_data *td, struct timeval *now,
- enum fio_ddir ddir)
-{
- unsigned long long bytes = 0;
- unsigned long iops = 0;
- unsigned long spent;
- unsigned long rate;
- unsigned int ratemin = 0;
- unsigned int rate_iops = 0;
- unsigned int rate_iops_min = 0;
-
- assert(ddir_rw(ddir));
-
- if (!td->o.ratemin[ddir] && !td->o.rate_iops_min[ddir])
- return 0;
-
- /*
- * allow a 2 second settle period in the beginning
- */
- if (mtime_since(&td->start, now) < 2000)
- return 0;
-
- iops += td->io_blocks[ddir];
- bytes += td->this_io_bytes[ddir];
- ratemin += td->o.ratemin[ddir];
- rate_iops += td->o.rate_iops[ddir];
- rate_iops_min += td->o.rate_iops_min[ddir];
-
- /*
- * if rate blocks is set, sample is running
- */
- if (td->rate_bytes[ddir] || td->rate_blocks[ddir]) {
- spent = mtime_since(&td->lastrate[ddir], now);
- if (spent < td->o.ratecycle)
- return 0;
-
- if (td->o.rate[ddir]) {
- /*
- * check bandwidth specified rate
- */
- if (bytes < td->rate_bytes[ddir]) {
- log_err("%s: min rate %u not met\n", td->o.name,
- ratemin);
- return 1;
- } else {
- rate = ((bytes - td->rate_bytes[ddir]) * 1000) / spent;
- 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);
- return 1;
- }
- }
- } else {
- /*
- * checks iops specified rate
- */
- if (iops < rate_iops) {
- log_err("%s: min iops rate %u not met\n",
- td->o.name, rate_iops);
- return 1;
- } else {
- rate = ((iops - td->rate_blocks[ddir]) * 1000) / spent;
- 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);
- }
- }
- }
- }
-
- td->rate_bytes[ddir] = bytes;
- td->rate_blocks[ddir] = iops;
- memcpy(&td->lastrate[ddir], now, sizeof(*now));
- return 0;
-}
-
-static int check_min_rate(struct thread_data *td, struct timeval *now,
- unsigned long *bytes_done)
-{
- int ret = 0;
-
- if (bytes_done[0])
- ret |= __check_min_rate(td, now, 0);
- if (bytes_done[1])
- ret |= __check_min_rate(td, now, 1);
-
- return ret;
-}
-
-static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
-{
- if (!td->o.timeout)
- return 0;
- if (mtime_since(&td->epoch, t) >= td->o.timeout * 1000)
- return 1;
-
- return 0;
-}
-
-/*
- * When job exits, we can cancel the in-flight IO if we are using async
- * io. Attempt to do so.
- */
-static void cleanup_pending_aio(struct thread_data *td)
-{
- struct flist_head *entry, *n;
- struct io_u *io_u;
- int r;
-
- /*
- * get immediately available events, if any
- */
- r = io_u_queued_complete(td, 0, NULL);
- if (r < 0)
- return;
-
- /*
- * now cancel remaining active events
- */
- if (td->io_ops->cancel) {
- flist_for_each_safe(entry, n, &td->io_u_busylist) {
- io_u = flist_entry(entry, struct io_u, list);
-
- /*
- * if the io_u isn't in flight, then that generally
- * means someone leaked an io_u. complain but fix
- * it up, so we don't stall here.
- */
- if ((io_u->flags & IO_U_F_FLIGHT) == 0) {
- log_err("fio: non-busy IO on busy list\n");
- put_io_u(td, io_u);
- } else {
- r = td->io_ops->cancel(td, io_u);
- if (!r)
- put_io_u(td, io_u);
- }
- }
- }
-
- if (td->cur_depth)
- r = io_u_queued_complete(td, td->cur_depth, NULL);
-}
-
-/*
- * Helper to handle the final sync of a file. Works just like the normal
- * io path, just does everything sync.
- */
-static int fio_io_sync(struct thread_data *td, struct fio_file *f)
-{
- struct io_u *io_u = __get_io_u(td);
- int ret;
-
- if (!io_u)
- return 1;
-
- io_u->ddir = DDIR_SYNC;
- io_u->file = f;
-
- if (td_io_prep(td, io_u)) {
- put_io_u(td, io_u);
- return 1;
- }
-
-requeue:
- ret = td_io_queue(td, io_u);
- if (ret < 0) {
- td_verror(td, io_u->error, "td_io_queue");
- put_io_u(td, io_u);
- return 1;
- } else if (ret == FIO_Q_QUEUED) {
- if (io_u_queued_complete(td, 1, NULL) < 0)
- return 1;
- } else if (ret == FIO_Q_COMPLETED) {
- if (io_u->error) {
- td_verror(td, io_u->error, "td_io_queue");
- return 1;
- }
-
- if (io_u_sync_complete(td, io_u, NULL) < 0)
- return 1;
- } else if (ret == FIO_Q_BUSY) {
- if (td_io_commit(td))
- return 1;
- goto requeue;
- }
-
- return 0;
-}
-
-static inline void __update_tv_cache(struct thread_data *td)
-{
- fio_gettime(&td->tv_cache, NULL);
-}
-
-static inline void update_tv_cache(struct thread_data *td)
-{
- if ((++td->tv_cache_nr & td->tv_cache_mask) == td->tv_cache_mask)
- __update_tv_cache(td);
-}
-
-static int break_on_this_error(struct thread_data *td, int *retptr)
-{
- int ret = *retptr;
-
- if (ret < 0 || td->error) {
- int err;
-
- if (!td->o.continue_on_error)
- return 1;
-
- if (ret < 0)
- err = -ret;
- else
- err = td->error;
-
- if (td_non_fatal_error(err)) {
- /*
- * Continue with the I/Os in case of
- * a non fatal error.
- */
- update_error_count(td, err);
- td_clear_error(td);
- *retptr = 0;
- return 0;
- } else if (td->o.fill_device && err == ENOSPC) {
- /*
- * We expect to hit this error if
- * fill_device option is set.
- */
- td_clear_error(td);
- td->terminate = 1;
- return 1;
- } else {
- /*
- * Stop the I/O in case of a fatal
- * error.
- */
- update_error_count(td, err);
- return 1;
- }
- }
-
- return 0;
-}
-
-/*
- * The main verify engine. Runs over the writes we previously submitted,
- * reads the blocks back in, and checks the crc/md5 of the data.
- */
-static void do_verify(struct thread_data *td)
-{
- struct fio_file *f;
- struct io_u *io_u;
- int ret, min_events;
- unsigned int i;
-
- dprint(FD_VERIFY, "starting loop\n");
-
- /*
- * sync io first and invalidate cache, to make sure we really
- * read from disk.
- */
- for_each_file(td, f, i) {
- if (!fio_file_open(f))
- continue;
- if (fio_io_sync(td, f))
- break;
- if (file_invalidate_cache(td, f))
- break;
- }
-
- if (td->error)
- return;
-
- td_set_runstate(td, TD_VERIFYING);
-
- io_u = NULL;
- while (!td->terminate) {
- int ret2, full;
-
- update_tv_cache(td);
-
- if (runtime_exceeded(td, &td->tv_cache)) {
- __update_tv_cache(td);
- if (runtime_exceeded(td, &td->tv_cache)) {
- td->terminate = 1;
- break;
- }
- }
-
- io_u = __get_io_u(td);
- if (!io_u)
- break;
-
- if (get_next_verify(td, io_u)) {
- put_io_u(td, io_u);
- break;
- }
-
- if (td_io_prep(td, io_u)) {
- put_io_u(td, io_u);
- break;
- }
-
- if (td->o.verify_async)
- io_u->end_io = verify_io_u_async;
- else
- io_u->end_io = verify_io_u;
-
- ret = td_io_queue(td, io_u);
- switch (ret) {
- case FIO_Q_COMPLETED:
- if (io_u->error) {
- ret = -io_u->error;
- clear_io_u(td, io_u);
- } else if (io_u->resid) {
- int bytes = io_u->xfer_buflen - io_u->resid;
-
- /*
- * zero read, fail
- */
- if (!bytes) {
- td_verror(td, EIO, "full resid");
- put_io_u(td, io_u);
- break;
- }
-
- io_u->xfer_buflen = io_u->resid;
- io_u->xfer_buf += bytes;
- io_u->offset += bytes;
-
- if (ddir_rw(io_u->ddir))
- td->ts.short_io_u[io_u->ddir]++;
-
- f = io_u->file;
- if (io_u->offset == f->real_file_size)
- goto sync_done;
-
- requeue_io_u(td, &io_u);
- } else {
-sync_done:
- ret = io_u_sync_complete(td, io_u, NULL);
- if (ret < 0)
- break;
- }
- continue;
- case FIO_Q_QUEUED:
- break;
- case FIO_Q_BUSY:
- requeue_io_u(td, &io_u);
- ret2 = td_io_commit(td);
- if (ret2 < 0)
- ret = ret2;
- break;
- default:
- assert(ret < 0);
- td_verror(td, -ret, "td_io_queue");
- break;
- }
-
- if (break_on_this_error(td, &ret))
- break;
-
- /*
- * if we can queue more, do so. but check if there are
- * completed io_u's first. Note that we can get BUSY even
- * without IO queued, if the system is resource starved.
- */
- full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
- if (full || !td->o.iodepth_batch_complete) {
- min_events = min(td->o.iodepth_batch_complete,
- td->cur_depth);
- if (full && !min_events && td->o.iodepth_batch_complete != 0)
- min_events = 1;
-
- do {
- /*
- * Reap required number of io units, if any,
- * and do the verification on them through
- * the callback handler
- */
- if (io_u_queued_complete(td, min_events, NULL) < 0) {
- ret = -1;
- break;
- }
- } while (full && (td->cur_depth > td->o.iodepth_low));
- }
- if (ret < 0)
- break;
- }
-
- if (!td->error) {
- min_events = td->cur_depth;
-
- if (min_events)
- ret = io_u_queued_complete(td, min_events, NULL);
- } else
- cleanup_pending_aio(td);
-
- td_set_runstate(td, TD_RUNNING);
-
- dprint(FD_VERIFY, "exiting loop\n");
-}
-
-/*
- * Main IO worker function. It retrieves io_u's to process and queues
- * and reaps them, checking for rate and errors along the way.
- */
-static void do_io(struct thread_data *td)
-{
- unsigned int i;
- int ret = 0;
-
- if (in_ramp_time(td))
- td_set_runstate(td, TD_RAMP);
- else
- td_set_runstate(td, TD_RUNNING);
-
- while ( (td->o.read_iolog_file && !flist_empty(&td->io_log_list)) ||
- (!flist_empty(&td->trim_list)) ||
- ((td->this_io_bytes[0] + td->this_io_bytes[1]) < td->o.size) ) {
- struct timeval comp_time;
- unsigned long bytes_done[2] = { 0, 0 };
- int min_evts = 0;
- struct io_u *io_u;
- int ret2, full;
-
- if (td->terminate)
- break;
-
- update_tv_cache(td);
-
- if (runtime_exceeded(td, &td->tv_cache)) {
- __update_tv_cache(td);
- if (runtime_exceeded(td, &td->tv_cache)) {
- td->terminate = 1;
- break;
- }
- }
-
- io_u = get_io_u(td);
- if (!io_u)
- break;
-
- /*
- * Add verification end_io handler, if asked to verify
- * a previously written file.
- */
- if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_READ &&
- !td_rw(td)) {
- if (td->o.verify_async)
- io_u->end_io = verify_io_u_async;
- else
- io_u->end_io = verify_io_u;
- td_set_runstate(td, TD_VERIFYING);
- } else if (in_ramp_time(td))
- td_set_runstate(td, TD_RAMP);
- else
- td_set_runstate(td, TD_RUNNING);
-
- ret = td_io_queue(td, io_u);
- switch (ret) {
- case FIO_Q_COMPLETED:
- if (io_u->error) {
- ret = -io_u->error;
- clear_io_u(td, io_u);
- } else if (io_u->resid) {
- int bytes = io_u->xfer_buflen - io_u->resid;
- struct fio_file *f = io_u->file;
-
- /*
- * zero read, fail
- */
- if (!bytes) {
- td_verror(td, EIO, "full resid");
- put_io_u(td, io_u);
- break;
- }
-
- io_u->xfer_buflen = io_u->resid;
- io_u->xfer_buf += bytes;
- io_u->offset += bytes;
-
- if (ddir_rw(io_u->ddir))
- td->ts.short_io_u[io_u->ddir]++;
-
- if (io_u->offset == f->real_file_size)
- goto sync_done;
-
- requeue_io_u(td, &io_u);
- } else {
-sync_done:
- if (__should_check_rate(td, 0) ||
- __should_check_rate(td, 1))
- fio_gettime(&comp_time, NULL);
-
- ret = io_u_sync_complete(td, io_u, bytes_done);
- if (ret < 0)
- break;
- }
- break;
- case FIO_Q_QUEUED:
- /*
- * if the engine doesn't have a commit hook,
- * the io_u is really queued. if it does have such
- * a hook, it has to call io_u_queued() itself.
- */
- if (td->io_ops->commit == NULL)
- io_u_queued(td, io_u);
- break;
- case FIO_Q_BUSY:
- requeue_io_u(td, &io_u);
- ret2 = td_io_commit(td);
- if (ret2 < 0)
- ret = ret2;
- break;
- default:
- assert(ret < 0);
- put_io_u(td, io_u);
- break;
- }
-
- if (break_on_this_error(td, &ret))
- break;
-
- /*
- * See if we need to complete some commands. Note that we
- * can get BUSY even without IO queued, if the system is
- * resource starved.
- */
- full = queue_full(td) || (ret == FIO_Q_BUSY && td->cur_depth);
- if (full || !td->o.iodepth_batch_complete) {
- min_evts = min(td->o.iodepth_batch_complete,
- td->cur_depth);
- if (full && !min_evts && td->o.iodepth_batch_complete != 0)
- min_evts = 1;
-
- if (__should_check_rate(td, 0) ||
- __should_check_rate(td, 1))
- fio_gettime(&comp_time, NULL);
-
- do {
- ret = io_u_queued_complete(td, min_evts, bytes_done);
- if (ret < 0)
- break;
-
- } while (full && (td->cur_depth > td->o.iodepth_low));
- }
-
- if (ret < 0)
- break;
- if (!(bytes_done[0] + bytes_done[1]))
- continue;
-
- if (!in_ramp_time(td) && should_check_rate(td, bytes_done)) {
- if (check_min_rate(td, &comp_time, bytes_done)) {
- if (exitall_on_terminate)
- terminate_threads(td->groupid);
- td_verror(td, EIO, "check_min_rate");
- break;
- }
- }
-
- if (td->o.thinktime) {
- unsigned long long b;
-
- b = td->io_blocks[0] + td->io_blocks[1];
- if (!(b % td->o.thinktime_blocks)) {
- int left;
-
- if (td->o.thinktime_spin)
- usec_spin(td->o.thinktime_spin);
-
- left = td->o.thinktime - td->o.thinktime_spin;
- if (left)
- usec_sleep(td, left);
- }
- }
- }
-
- if (td->trim_entries)
- printf("trim entries %ld\n", td->trim_entries);
-
- if (td->o.fill_device && td->error == ENOSPC) {
- td->error = 0;
- td->terminate = 1;
- }
- if (!td->error) {
- struct fio_file *f;
-
- i = td->cur_depth;
- if (i) {
- ret = io_u_queued_complete(td, i, NULL);
- if (td->o.fill_device && td->error == ENOSPC)
- td->error = 0;
- }
-
- if (should_fsync(td) && td->o.end_fsync) {
- td_set_runstate(td, TD_FSYNCING);
-
- for_each_file(td, f, i) {
- if (!fio_file_open(f))
- continue;
- fio_io_sync(td, f);
- }
- }
- } else
- cleanup_pending_aio(td);
-
- /*
- * stop job if we failed doing any IO
- */
- if ((td->this_io_bytes[0] + td->this_io_bytes[1]) == 0)
- td->done = 1;
-}
-
-static void cleanup_io_u(struct thread_data *td)
-{
- struct flist_head *entry, *n;
- struct io_u *io_u;
-
- flist_for_each_safe(entry, n, &td->io_u_freelist) {
- io_u = flist_entry(entry, struct io_u, list);
-
- flist_del(&io_u->list);
- fio_memfree(io_u, sizeof(*io_u));
- }
-
- free_io_mem(td);
-}
-
-static int init_io_u(struct thread_data *td)
-{
- struct io_u *io_u;
- unsigned int max_bs;
- int cl_align, i, max_units;
- char *p;
-
- max_units = td->o.iodepth;
- max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
- td->orig_buffer_size = (unsigned long long) max_bs
- * (unsigned long long) max_units;
-
- if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE) {
- unsigned long bs;
-
- bs = td->orig_buffer_size + td->o.hugepage_size - 1;
- td->orig_buffer_size = bs & ~(td->o.hugepage_size - 1);
- }
-
- if (td->orig_buffer_size != (size_t) td->orig_buffer_size) {
- log_err("fio: IO memory too large. Reduce max_bs or iodepth\n");
- return 1;
- }
-
- if (allocate_io_mem(td))
- return 1;
-
- if (td->o.odirect || td->o.mem_align ||
- (td->io_ops->flags & FIO_RAWIO))
- p = PAGE_ALIGN(td->orig_buffer) + td->o.mem_align;
- else
- p = td->orig_buffer;
-
- cl_align = os_cache_line_size();
-
- for (i = 0; i < max_units; i++) {
- void *ptr;
-
- if (td->terminate)
- return 1;
-
- ptr = fio_memalign(cl_align, sizeof(*io_u));
- if (!ptr) {
- log_err("fio: unable to allocate aligned memory\n");
- break;
- }
-
- io_u = ptr;
- memset(io_u, 0, sizeof(*io_u));
- INIT_FLIST_HEAD(&io_u->list);
- dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
-
- if (!(td->io_ops->flags & FIO_NOIO)) {
- io_u->buf = p + max_bs * i;
- dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
-
- if (td_write(td))
- io_u_fill_buffer(td, io_u, max_bs);
- if (td_write(td) && td->o.verify_pattern_bytes) {
- /*
- * Fill the buffer with the pattern if we are
- * going to be doing writes.
- */
- fill_pattern(td, io_u->buf, max_bs, io_u, 0, 0);
- }
- }
-
- io_u->index = i;
- io_u->flags = IO_U_F_FREE;
- flist_add(&io_u->list, &td->io_u_freelist);
- }
-
- return 0;
-}
-
-static int switch_ioscheduler(struct thread_data *td)
-{
- char tmp[256], tmp2[128];
- FILE *f;
- int ret;
-
- if (td->io_ops->flags & FIO_DISKLESSIO)
- return 0;
-
- sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
-
- f = fopen(tmp, "r+");
- if (!f) {
- if (errno == ENOENT) {
- log_err("fio: os or kernel doesn't support IO scheduler"
- " switching\n");
- return 0;
- }
- td_verror(td, errno, "fopen iosched");
- return 1;
- }
-
- /*
- * Set io scheduler.
- */
- ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
- if (ferror(f) || ret != 1) {
- td_verror(td, errno, "fwrite");
- fclose(f);
- return 1;
- }
-
- rewind(f);
-
- /*
- * Read back and check that the selected scheduler is now the default.
- */
- ret = fread(tmp, 1, sizeof(tmp), f);
- if (ferror(f) || ret < 0) {
- td_verror(td, errno, "fread");
- fclose(f);
- return 1;
- }
-
- sprintf(tmp2, "[%s]", td->o.ioscheduler);
- if (!strstr(tmp, tmp2)) {
- log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
- td_verror(td, EINVAL, "iosched_switch");
- fclose(f);
- return 1;
- }
-
- fclose(f);
- return 0;
-}
-
-static int keep_running(struct thread_data *td)
-{
- unsigned long long io_done;
-
- if (td->done)
- return 0;
- if (td->o.time_based)
- return 1;
- if (td->o.loops) {
- td->o.loops--;
- return 1;
- }
-
- io_done = td->io_bytes[DDIR_READ] + td->io_bytes[DDIR_WRITE]
- + td->io_skip_bytes;
- if (io_done < td->o.size)
- return 1;
-
- return 0;
-}
-
-static void reset_io_counters(struct thread_data *td)
-{
- td->ts.stat_io_bytes[0] = td->ts.stat_io_bytes[1] = 0;
- td->this_io_bytes[0] = td->this_io_bytes[1] = 0;
- td->zone_bytes = 0;
- td->rate_bytes[0] = td->rate_bytes[1] = 0;
- td->rate_blocks[0] = td->rate_blocks[1] = 0;
-
- td->last_was_sync = 0;
-
- /*
- * reset file done count if we are to start over
- */
- if (td->o.time_based || td->o.loops)
- td->nr_done_files = 0;
-}
-
-void reset_all_stats(struct thread_data *td)
-{
- struct timeval tv;
- int i;
-
- reset_io_counters(td);
-
- for (i = 0; i < 2; i++) {
- td->io_bytes[i] = 0;
- td->io_blocks[i] = 0;
- td->io_issues[i] = 0;
- td->ts.total_io_u[i] = 0;
- }
-
- fio_gettime(&tv, NULL);
- td->ts.runtime[0] = 0;
- td->ts.runtime[1] = 0;
- memcpy(&td->epoch, &tv, sizeof(tv));
- memcpy(&td->start, &tv, sizeof(tv));
-}
-
-static void clear_io_state(struct thread_data *td)
-{
- struct fio_file *f;
- unsigned int i;
-
- reset_io_counters(td);
-
- close_files(td);
- for_each_file(td, f, i)
- fio_file_clear_done(f);
-
- /*
- * Set the same seed to get repeatable runs
- */
- td_fill_rand_seeds(td);
-}
-
-static int exec_string(const char *string)
-{
- int ret, newlen = strlen(string) + 1 + 8;
- char *str;
-
- str = malloc(newlen);
- sprintf(str, "sh -c %s", string);
-
- ret = system(str);
- if (ret == -1)
- log_err("fio: exec of cmd <%s> failed\n", str);
-
- free(str);
- return ret;
-}
-
-/*
- * Entry point for the thread based jobs. The process based jobs end up
- * here as well, after a little setup.
- */
-static void *thread_main(void *data)
-{
- unsigned long long elapsed;
- struct thread_data *td = data;
- pthread_condattr_t attr;
- int clear_state;
-
- if (!td->o.use_thread) {
- setsid();
- td->pid = getpid();
- } else
- td->pid = gettid();
-
- dprint(FD_PROCESS, "jobs pid=%d started\n", (int) td->pid);
-
- INIT_FLIST_HEAD(&td->io_u_freelist);
- INIT_FLIST_HEAD(&td->io_u_busylist);
- INIT_FLIST_HEAD(&td->io_u_requeues);
- INIT_FLIST_HEAD(&td->io_log_list);
- INIT_FLIST_HEAD(&td->io_hist_list);
- INIT_FLIST_HEAD(&td->verify_list);
- INIT_FLIST_HEAD(&td->trim_list);
- pthread_mutex_init(&td->io_u_lock, NULL);
- td->io_hist_tree = RB_ROOT;
-
- pthread_condattr_init(&attr);
- pthread_cond_init(&td->verify_cond, &attr);
- pthread_cond_init(&td->free_cond, &attr);
-
- td_set_runstate(td, TD_INITIALIZED);
- dprint(FD_MUTEX, "up startup_mutex\n");
- fio_mutex_up(startup_mutex);
- dprint(FD_MUTEX, "wait on td->mutex\n");
- fio_mutex_down(td->mutex);
- dprint(FD_MUTEX, "done waiting on td->mutex\n");
-
- /*
- * the ->mutex mutex is now no longer used, close it to avoid
- * eating a file descriptor
- */
- fio_mutex_remove(td->mutex);
-
- /*
- * A new gid requires privilege, so we need to do this before setting
- * the uid.
- */
- if (td->o.gid != -1U && setgid(td->o.gid)) {
- td_verror(td, errno, "setgid");
- goto err;
- }
- if (td->o.uid != -1U && setuid(td->o.uid)) {
- td_verror(td, errno, "setuid");
- goto err;
- }
-
- /*
- * If we have a gettimeofday() thread, make sure we exclude that
- * thread from this job
- */
- if (td->o.gtod_cpu)
- fio_cpu_clear(&td->o.cpumask, td->o.gtod_cpu);
-
- /*
- * Set affinity first, in case it has an impact on the memory
- * allocations.
- */
- if (td->o.cpumask_set && fio_setaffinity(td->pid, td->o.cpumask) == -1) {
- td_verror(td, errno, "cpu_set_affinity");
- goto err;
- }
-
- /*
- * May alter parameters that init_io_u() will use, so we need to
- * do this first.
- */
- if (init_iolog(td))
- goto err;
-
- if (init_io_u(td))
- goto err;
-
- if (td->o.verify_async && verify_async_init(td))
- goto err;
-
- if (td->ioprio_set) {
- if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) {
- td_verror(td, errno, "ioprio_set");
- goto err;
- }
- }
-
- if (td->o.cgroup_weight && cgroup_setup(td, cgroup_list, &cgroup_mnt))
- goto err;
-
- if (nice(td->o.nice) == -1) {
- td_verror(td, errno, "nice");
- goto err;
- }
-
- if (td->o.ioscheduler && switch_ioscheduler(td))
- goto err;
-
- if (!td->o.create_serialize && setup_files(td))
- goto err;
-
- if (td_io_init(td))
- goto err;
-
- if (init_random_map(td))
- goto err;
-
- if (td->o.exec_prerun) {
- if (exec_string(td->o.exec_prerun))
- goto err;
- }
-
- if (td->o.pre_read) {
- if (pre_read_files(td) < 0)
- goto err;
- }
-
- fio_gettime(&td->epoch, NULL);
- getrusage(RUSAGE_SELF, &td->ts.ru_start);
-
- clear_state = 0;
- while (keep_running(td)) {
- fio_gettime(&td->start, NULL);
- memcpy(&td->ts.stat_sample_time[0], &td->start,
- sizeof(td->start));
- memcpy(&td->ts.stat_sample_time[1], &td->start,
- sizeof(td->start));
- memcpy(&td->tv_cache, &td->start, sizeof(td->start));
-
- if (td->o.ratemin[0] || td->o.ratemin[1])
- memcpy(&td->lastrate, &td->ts.stat_sample_time,
- sizeof(td->lastrate));
-
- if (clear_state)
- clear_io_state(td);
-
- prune_io_piece_log(td);
-
- do_io(td);
-
- clear_state = 1;
-
- if (td_read(td) && td->io_bytes[DDIR_READ]) {
- elapsed = utime_since_now(&td->start);
- td->ts.runtime[DDIR_READ] += elapsed;
- }
- if (td_write(td) && td->io_bytes[DDIR_WRITE]) {
- elapsed = utime_since_now(&td->start);
- td->ts.runtime[DDIR_WRITE] += elapsed;
- }
-
- if (td->error || td->terminate)
- break;
-
- if (!td->o.do_verify ||
- td->o.verify == VERIFY_NONE ||
- (td->io_ops->flags & FIO_UNIDIR))
- continue;
-
- clear_io_state(td);
-
- fio_gettime(&td->start, NULL);
-
- do_verify(td);
-
- td->ts.runtime[DDIR_READ] += utime_since_now(&td->start);
-
- if (td->error || td->terminate)
- break;
- }
-
- update_rusage_stat(td);
- td->ts.runtime[0] = (td->ts.runtime[0] + 999) / 1000;
- td->ts.runtime[1] = (td->ts.runtime[1] + 999) / 1000;
- td->ts.total_run_time = mtime_since_now(&td->epoch);
- td->ts.io_bytes[0] = td->io_bytes[0];
- td->ts.io_bytes[1] = td->io_bytes[1];
-
- fio_mutex_down(writeout_mutex);
- if (td->ts.bw_log) {
- if (td->o.bw_log_file) {
- finish_log_named(td, td->ts.bw_log,
- td->o.bw_log_file, "bw");
- } else
- finish_log(td, td->ts.bw_log, "bw");
- }
- if (td->ts.lat_log) {
- if (td->o.lat_log_file) {
- finish_log_named(td, td->ts.lat_log,
- td->o.lat_log_file, "lat");
- } else
- finish_log(td, td->ts.lat_log, "lat");
- }
- if (td->ts.slat_log) {
- if (td->o.lat_log_file) {
- finish_log_named(td, td->ts.slat_log,
- td->o.lat_log_file, "slat");
- } else
- finish_log(td, td->ts.slat_log, "slat");
- }
- if (td->ts.clat_log) {
- if (td->o.lat_log_file) {
- finish_log_named(td, td->ts.clat_log,
- td->o.lat_log_file, "clat");
- } else
- finish_log(td, td->ts.clat_log, "clat");
- }
- fio_mutex_up(writeout_mutex);
- if (td->o.exec_postrun)
- exec_string(td->o.exec_postrun);
-
- if (exitall_on_terminate)
- terminate_threads(td->groupid);
-
-err:
- if (td->error)
- log_info("fio: pid=%d, err=%d/%s\n", (int) td->pid, td->error,
- td->verror);
-
- if (td->o.verify_async)
- verify_async_exit(td);
-
- close_and_free_files(td);
- close_ioengine(td);
- cleanup_io_u(td);
- cgroup_shutdown(td, &cgroup_mnt);
-
- if (td->o.cpumask_set) {
- int ret = fio_cpuset_exit(&td->o.cpumask);
-
- td_verror(td, ret, "fio_cpuset_exit");
- }
-
- /*
- * do this very late, it will log file closing as well
- */
- if (td->o.write_iolog_file)
- write_iolog_close(td);
-
- options_mem_free(td);
- td_set_runstate(td, TD_EXITED);
- return (void *) (unsigned long) td->error;
-}
-
-/*
- * We cannot pass the td data into a forked process, so attach the td and
- * pass it to the thread worker.
- */
-static int fork_main(int shmid, int offset)
-{
- struct thread_data *td;
- void *data, *ret;
-
-#ifndef __hpux
- data = shmat(shmid, NULL, 0);
- if (data == (void *) -1) {
- int __err = errno;
-
- perror("shmat");
- return __err;
- }
-#else
- /*
- * HP-UX inherits shm mappings?
- */
- data = threads;
-#endif
-
- td = data + offset * sizeof(struct thread_data);
- ret = thread_main(td);
- shmdt(data);
- return (int) (unsigned long) ret;
-}
-
-/*
- * Run over the job map and reap the threads that have exited, if any.
- */
-static void reap_threads(int *nr_running, int *t_rate, int *m_rate)
-{
- struct thread_data *td;
- int i, cputhreads, realthreads, pending, status, ret;
-
- /*
- * reap exited threads (TD_EXITED -> TD_REAPED)
- */
- realthreads = pending = cputhreads = 0;
- for_each_td(td, i) {
- int flags = 0;
-
- /*
- * ->io_ops is NULL for a thread that has closed its
- * io engine
- */
- if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
- cputhreads++;
- else
- realthreads++;
-
- if (!td->pid) {
- pending++;
- continue;
- }
- if (td->runstate == TD_REAPED)
- continue;
- if (td->o.use_thread) {
- if (td->runstate == TD_EXITED) {
- td_set_runstate(td, TD_REAPED);
- goto reaped;
- }
- continue;
- }
-
- flags = WNOHANG;
- if (td->runstate == TD_EXITED)
- flags = 0;
-
- /*
- * check if someone quit or got killed in an unusual way
- */
- ret = waitpid(td->pid, &status, flags);
- if (ret < 0) {
- if (errno == ECHILD) {
- log_err("fio: pid=%d disappeared %d\n",
- (int) td->pid, td->runstate);
- td_set_runstate(td, TD_REAPED);
- goto reaped;
- }
- perror("waitpid");
- } else if (ret == td->pid) {
- if (WIFSIGNALED(status)) {
- int sig = WTERMSIG(status);
-
- if (sig != SIGTERM)
- log_err("fio: pid=%d, got signal=%d\n",
- (int) td->pid, sig);
- td_set_runstate(td, TD_REAPED);
- goto reaped;
- }
- if (WIFEXITED(status)) {
- if (WEXITSTATUS(status) && !td->error)
- td->error = WEXITSTATUS(status);
-
- td_set_runstate(td, TD_REAPED);
- goto reaped;
- }
- }
-
- /*
- * thread is not dead, continue
- */
- pending++;
- continue;
-reaped:
- (*nr_running)--;
- (*m_rate) -= (td->o.ratemin[0] + td->o.ratemin[1]);
- (*t_rate) -= (td->o.rate[0] + td->o.rate[1]);
- if (!td->pid)
- pending--;
-
- if (td->error)
- exit_value++;
-
- done_secs += mtime_since_now(&td->epoch) / 1000;
- }
-
- if (*nr_running == cputhreads && !pending && realthreads)
- terminate_threads(TERMINATE_ALL);
-}
-
-static void *gtod_thread_main(void *data)
-{
- fio_mutex_up(startup_mutex);
-
- /*
- * As long as we have jobs around, update the clock. It would be nice
- * to have some way of NOT hammering that CPU with gettimeofday(),
- * but I'm not sure what to use outside of a simple CPU nop to relax
- * it - we don't want to lose precision.
- */
- while (threads) {
- fio_gtod_update();
- nop;
- }
-
- return NULL;
-}
-
-static int fio_start_gtod_thread(void)
-{
- pthread_attr_t attr;
- int ret;
-
- pthread_attr_init(&attr);
- pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
- ret = pthread_create(>od_thread, &attr, gtod_thread_main, NULL);
- pthread_attr_destroy(&attr);
- if (ret) {
- log_err("Can't create gtod thread: %s\n", strerror(ret));
- return 1;
- }
-
- ret = pthread_detach(gtod_thread);
- if (ret) {
- log_err("Can't detatch gtod thread: %s\n", strerror(ret));
- return 1;
- }
-
- dprint(FD_MUTEX, "wait on startup_mutex\n");
- fio_mutex_down(startup_mutex);
- dprint(FD_MUTEX, "done waiting on startup_mutex\n");
- return 0;
-}
-
-/*
- * Main function for kicking off and reaping jobs, as needed.
- */
-static void run_threads(void)
-{
- struct thread_data *td;
- unsigned long spent;
- int i, todo, nr_running, m_rate, t_rate, nr_started;
-
- if (fio_pin_memory())
- return;
-
- if (fio_gtod_offload && fio_start_gtod_thread())
- return;
-
- if (!terse_output) {
- log_info("Starting ");
- if (nr_thread)
- log_info("%d thread%s", nr_thread,
- nr_thread > 1 ? "s" : "");
- if (nr_process) {
- if (nr_thread)
- printf(" and ");
- log_info("%d process%s", nr_process,
- nr_process > 1 ? "es" : "");
- }
- log_info("\n");
- fflush(stdout);
- }
-
- set_sig_handlers();
-
- todo = thread_number;
- nr_running = 0;
- nr_started = 0;
- m_rate = t_rate = 0;
-
- for_each_td(td, i) {
- print_status_init(td->thread_number - 1);
-
- if (!td->o.create_serialize)
- continue;
-
- /*
- * do file setup here so it happens sequentially,
- * we don't want X number of threads getting their
- * client data interspersed on disk
- */
- if (setup_files(td)) {
- exit_value++;
- if (td->error)
- log_err("fio: pid=%d, err=%d/%s\n",
- (int) td->pid, td->error, td->verror);
- td_set_runstate(td, TD_REAPED);
- todo--;
- } else {
- struct fio_file *f;
- unsigned int j;
-
- /*
- * for sharing to work, each job must always open
- * its own files. so close them, if we opened them
- * for creation
- */
- for_each_file(td, f, j) {
- if (fio_file_open(f))
- td_io_close_file(td, f);
- }
- }
- }
-
- set_genesis_time();
-
- while (todo) {
- struct thread_data *map[REAL_MAX_JOBS];
- struct timeval this_start;
- int this_jobs = 0, left;
-
- /*
- * create threads (TD_NOT_CREATED -> TD_CREATED)
- */
- for_each_td(td, i) {
- if (td->runstate != TD_NOT_CREATED)
- continue;
-
- /*
- * never got a chance to start, killed by other
- * thread for some reason
- */
- if (td->terminate) {
- todo--;
- continue;
- }
-
- if (td->o.start_delay) {
- spent = mtime_since_genesis();
-
- if (td->o.start_delay * 1000 > spent)
- continue;
- }
-
- if (td->o.stonewall && (nr_started || nr_running)) {
- dprint(FD_PROCESS, "%s: stonewall wait\n",
- td->o.name);
- break;
- }
-
- init_disk_util(td);
-
- /*
- * Set state to created. Thread will transition
- * to TD_INITIALIZED when it's done setting up.
- */
- td_set_runstate(td, TD_CREATED);
- map[this_jobs++] = td;
- nr_started++;
-
- if (td->o.use_thread) {
- int ret;
-
- dprint(FD_PROCESS, "will pthread_create\n");
- ret = pthread_create(&td->thread, NULL,
- thread_main, td);
- if (ret) {
- log_err("pthread_create: %s\n",
- strerror(ret));
- nr_started--;
- break;
- }
- ret = pthread_detach(td->thread);
- if (ret)
- log_err("pthread_detach: %s",
- strerror(ret));
- } else {
- pid_t pid;
- dprint(FD_PROCESS, "will fork\n");
- pid = fork();
- if (!pid) {
- int ret = fork_main(shm_id, i);
-
- _exit(ret);
- } else if (i == fio_debug_jobno)
- *fio_debug_jobp = pid;
- }
- dprint(FD_MUTEX, "wait on startup_mutex\n");
- if (fio_mutex_down_timeout(startup_mutex, 10)) {
- log_err("fio: job startup hung? exiting.\n");
- terminate_threads(TERMINATE_ALL);
- fio_abort = 1;
- nr_started--;
- break;
- }
- dprint(FD_MUTEX, "done waiting on startup_mutex\n");
- }
-
- /*
- * Wait for the started threads to transition to
- * TD_INITIALIZED.
- */
- fio_gettime(&this_start, NULL);
- left = this_jobs;
- while (left && !fio_abort) {
- if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
- break;
-
- usleep(100000);
-
- for (i = 0; i < this_jobs; i++) {
- td = map[i];
- if (!td)
- continue;
- if (td->runstate == TD_INITIALIZED) {
- map[i] = NULL;
- left--;
- } else if (td->runstate >= TD_EXITED) {
- map[i] = NULL;
- left--;
- todo--;
- nr_running++; /* work-around... */
- }
- }
- }
-
- if (left) {
- log_err("fio: %d jobs failed to start\n", left);
- for (i = 0; i < this_jobs; i++) {
- td = map[i];
- if (!td)
- continue;
- kill(td->pid, SIGTERM);
- }
- break;
- }
-
- /*
- * start created threads (TD_INITIALIZED -> TD_RUNNING).
- */
- for_each_td(td, i) {
- if (td->runstate != TD_INITIALIZED)
- continue;
-
- if (in_ramp_time(td))
- td_set_runstate(td, TD_RAMP);
- else
- td_set_runstate(td, TD_RUNNING);
- nr_running++;
- nr_started--;
- m_rate += td->o.ratemin[0] + td->o.ratemin[1];
- t_rate += td->o.rate[0] + td->o.rate[1];
- todo--;
- fio_mutex_up(td->mutex);
- }
-
- reap_threads(&nr_running, &t_rate, &m_rate);
-
- if (todo)
- usleep(100000);
- }
-
- while (nr_running) {
- reap_threads(&nr_running, &t_rate, &m_rate);
- usleep(10000);
- }
-
- update_io_ticks();
- fio_unpin_memory();
-}
-
-int exec_run(void)
+int main(int argc, char *argv[], char *envp[])
{
- if (is_client)
- return fio_handle_clients();
- if (exec_profile && load_profile(exec_profile))
- return 1;
-
- if (!thread_number)
- return 0;
-
- if (write_bw_log) {
- setup_log(&agg_io_log[DDIR_READ]);
- setup_log(&agg_io_log[DDIR_WRITE]);
- }
+ long ps;
- startup_mutex = fio_mutex_init(0);
- if (startup_mutex == NULL)
- return 1;
- writeout_mutex = fio_mutex_init(1);
- if (writeout_mutex == NULL)
+ if (endian_check()) {
+ log_err("fio: endianness settings appear wrong.\n");
+ log_err("fio: please report this to fio@vger.kernel.org\n");
return 1;
-
- set_genesis_time();
- create_disk_util_thread();
-
- cgroup_list = smalloc(sizeof(*cgroup_list));
- INIT_FLIST_HEAD(cgroup_list);
-
- run_threads();
-
- if (!fio_abort) {
- show_run_stats();
- if (write_bw_log) {
- __finish_log(agg_io_log[DDIR_READ], "agg-read_bw.log");
- __finish_log(agg_io_log[DDIR_WRITE],
- "agg-write_bw.log");
- }
}
- cgroup_kill(cgroup_list);
- sfree(cgroup_list);
- sfree(cgroup_mnt);
-
- fio_mutex_remove(startup_mutex);
- fio_mutex_remove(writeout_mutex);
- return exit_value;
-}
-
-void reset_fio_state(void)
-{
- groupid = 0;
- thread_number = 0;
- nr_process = 0;
- nr_thread = 0;
- done_secs = 0;
-}
-
-int main(int argc, char *argv[], char *envp[])
-{
- long ps;
-
arch_init(envp);
sinit();
if (parse_options(argc, argv))
return 1;
- return exec_run();
+ if (nr_clients)
+ return fio_handle_clients(&fio_client_ops);
+ else
+ return fio_backend();
}
projects / fio.git / blobdiff