* fio - the flexible io tester
*
* Copyright (C) 2005 Jens Axboe <axboe@suse.de>
+ * Copyright (C) 2006 Jens Axboe <axboe@kernel.dk>
+ *
+ * The license below covers all files distributed with fio unless otherwise
+ * noted in the file itself.
*
* This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
#include <string.h>
#include <signal.h>
#include <time.h>
+#include <locale.h>
#include <assert.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/ipc.h>
#include <sys/shm.h>
-#include <sys/ioctl.h>
#include <sys/mman.h>
#include "fio.h"
-#include "os.h"
-
-#define MASK (4095)
+#include "hash.h"
-#define ALIGN(buf) (char *) (((unsigned long) (buf) + MASK) & ~(MASK))
+unsigned long page_mask;
+unsigned long page_size;
+#define ALIGN(buf) \
+ (char *) (((unsigned long) (buf) + page_mask) & ~page_mask)
int groupid = 0;
int thread_number = 0;
-static char run_str[MAX_JOBS + 1];
+int nr_process = 0;
+int nr_thread = 0;
int shm_id = 0;
-static struct timeval genesis;
-static int temp_stall_ts;
-
-static void print_thread_status(void);
-
-extern unsigned long long mlock_size;
+int temp_stall_ts;
-/*
- * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
- * will never back again. It may cycle between running/verififying/fsyncing.
- * Once the thread reaches TD_EXITED, it is just waiting for the core to
- * reap it.
- */
-enum {
- TD_NOT_CREATED = 0,
- TD_CREATED,
- TD_INITIALIZED,
- TD_RUNNING,
- TD_VERIFYING,
- TD_FSYNCING,
- TD_EXITED,
- TD_REAPED,
-};
+static struct fio_sem *startup_sem;
+static volatile int fio_abort;
+static int exit_value;
-#define should_fsync(td) ((td_write(td) || td_rw(td)) && (!(td)->odirect || (td)->override_sync))
-
-static volatile int startup_sem;
+struct io_log *agg_io_log[2];
#define TERMINATE_ALL (-1)
#define JOB_START_TIMEOUT (5 * 1000)
+static inline void td_set_runstate(struct thread_data *td, int runstate)
+{
+ td->runstate = runstate;
+}
+
static void terminate_threads(int group_id)
{
+ struct thread_data *td;
int i;
- for (i = 0; i < thread_number; i++) {
- struct thread_data *td = &threads[i];
-
+ for_each_td(td, i) {
if (group_id == TERMINATE_ALL || groupid == td->groupid) {
+ /*
+ * if the thread is running, just let it exit
+ */
+ if (td->runstate < TD_RUNNING)
+ kill(td->pid, SIGQUIT);
td->terminate = 1;
- td->start_delay = 0;
+ td->o.start_delay = 0;
}
}
}
print_thread_status();
break;
default:
- printf("\nfio: terminating on signal\n");
+ printf("\nfio: terminating on signal %d\n", sig);
fflush(stdout);
terminate_threads(TERMINATE_ALL);
break;
}
}
-static int random_map_free(struct thread_data *td, unsigned long long block)
-{
- unsigned int idx = RAND_MAP_IDX(td, block);
- unsigned int bit = RAND_MAP_BIT(td, block);
-
- return (td->file_map[idx] & (1UL << bit)) == 0;
-}
-
-static int get_next_free_block(struct thread_data *td, unsigned long long *b)
-{
- int i;
-
- *b = 0;
- i = 0;
- while ((*b) * td->min_bs < td->io_size) {
- if (td->file_map[i] != -1UL) {
- *b += ffz(td->file_map[i]);
- return 0;
- }
-
- *b += BLOCKS_PER_MAP;
- i++;
- }
-
- return 1;
-}
-
-static void mark_random_map(struct thread_data *td, struct io_u *io_u)
-{
- unsigned long long block = io_u->offset / (unsigned long long) td->min_bs;
- unsigned int blocks = 0;
-
- while (blocks < (io_u->buflen / td->min_bs)) {
- unsigned int idx, bit;
-
- if (!random_map_free(td, block))
- break;
-
- idx = RAND_MAP_IDX(td, block);
- bit = RAND_MAP_BIT(td, block);
-
- assert(idx < td->num_maps);
-
- td->file_map[idx] |= (1UL << bit);
- block++;
- blocks++;
- }
-
- if ((blocks * td->min_bs) < io_u->buflen)
- io_u->buflen = blocks * td->min_bs;
-}
-
-static int get_next_offset(struct thread_data *td, unsigned long long *offset)
-{
- unsigned long long b, rb;
- long r;
-
- if (!td->sequential) {
- unsigned long long max_blocks = td->io_size / td->min_bs;
- int loops = 50;
-
- do {
- r = os_random_long(&td->random_state);
- b = ((max_blocks - 1) * r / (unsigned long long) (RAND_MAX+1.0));
- rb = b + (td->file_offset / td->min_bs);
- loops--;
- } while (!random_map_free(td, rb) && loops);
-
- if (!loops) {
- if (get_next_free_block(td, &b))
- return 1;
- }
- } else
- b = td->last_pos / td->min_bs;
-
- *offset = (b * td->min_bs) + td->file_offset;
- if (*offset > td->real_file_size)
- return 1;
-
- return 0;
-}
-
-static unsigned int get_next_buflen(struct thread_data *td)
-{
- unsigned int buflen;
- long r;
-
- if (td->min_bs == td->max_bs)
- buflen = td->min_bs;
- else {
- r = os_random_long(&td->bsrange_state);
- buflen = (1 + (double) (td->max_bs - 1) * r / (RAND_MAX + 1.0));
- buflen = (buflen + td->min_bs - 1) & ~(td->min_bs - 1);
- }
-
- if (buflen > td->io_size - td->this_io_bytes[td->ddir])
- buflen = td->io_size - td->this_io_bytes[td->ddir];
-
- return buflen;
-}
-
+/*
+ * Check if we are above the minimum rate given.
+ */
static int check_min_rate(struct thread_data *td, struct timeval *now)
{
+ unsigned long long bytes = 0;
+ unsigned long iops = 0;
unsigned long spent;
unsigned long rate;
- int ddir = td->ddir;
+
+ /*
+ * No minimum rate set, always ok
+ */
+ if (!td->o.ratemin && !td->o.rate_iops_min)
+ return 0;
/*
* allow a 2 second settle period in the beginning
if (mtime_since(&td->start, now) < 2000)
return 0;
+ if (td_read(td)) {
+ iops += td->io_blocks[DDIR_READ];
+ bytes += td->this_io_bytes[DDIR_READ];
+ }
+ if (td_write(td)) {
+ iops += td->io_blocks[DDIR_WRITE];
+ bytes += td->this_io_bytes[DDIR_WRITE];
+ }
+
/*
* if rate blocks is set, sample is running
*/
- if (td->rate_bytes) {
+ if (td->rate_bytes || td->rate_blocks) {
spent = mtime_since(&td->lastrate, now);
- if (spent < td->ratecycle)
+ if (spent < td->o.ratecycle)
return 0;
- rate = (td->this_io_bytes[ddir] - td->rate_bytes) / spent;
- if (rate < td->ratemin) {
- fprintf(f_out, "%s: min rate %d not met, got %ldKiB/sec\n", td->name, td->ratemin, rate);
- if (rate_quit)
- terminate_threads(td->groupid);
- return 1;
+ if (td->o.rate) {
+ /*
+ * check bandwidth specified rate
+ */
+ if (bytes < td->rate_bytes) {
+ log_err("%s: min rate %u not met\n", td->o.name, td->o.ratemin);
+ return 1;
+ } else {
+ rate = (bytes - td->rate_bytes) / spent;
+ if (rate < td->o.ratemin || bytes < td->rate_bytes) {
+ log_err("%s: min rate %u not met, got %luKiB/sec\n", td->o.name, td->o.ratemin, rate);
+ return 1;
+ }
+ }
+ } else {
+ /*
+ * checks iops specified rate
+ */
+ if (iops < td->o.rate_iops) {
+ log_err("%s: min iops rate %u not met\n", td->o.name, td->o.rate_iops);
+ return 1;
+ } else {
+ rate = (iops - td->rate_blocks) / spent;
+ if (rate < td->o.rate_iops_min || iops < td->rate_blocks) {
+ log_err("%s: min iops rate %u not met, got %lu\n", td->o.name, td->o.rate_iops_min, rate);
+ }
+ }
}
}
- td->rate_bytes = td->this_io_bytes[ddir];
+ td->rate_bytes = bytes;
+ td->rate_blocks = iops;
memcpy(&td->lastrate, now, sizeof(*now));
return 0;
}
static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
{
- if (!td->timeout)
+ if (!td->o.timeout)
return 0;
- if (mtime_since(&td->epoch, t) >= td->timeout * 1000)
- return 1;
-
- return 0;
-}
-
-static void fill_random_bytes(struct thread_data *td,
- unsigned char *p, unsigned int len)
-{
- unsigned int todo;
- double r;
-
- while (len) {
- r = os_random_double(&td->verify_state);
-
- /*
- * lrand48_r seems to be broken and only fill the bottom
- * 32-bits, even on 64-bit archs with 64-bit longs
- */
- todo = sizeof(r);
- if (todo > len)
- todo = len;
-
- memcpy(p, &r, todo);
-
- len -= todo;
- p += todo;
- }
-}
-
-static void hexdump(void *buffer, int len)
-{
- unsigned char *p = buffer;
- int i;
-
- for (i = 0; i < len; i++)
- fprintf(f_out, "%02x", p[i]);
- fprintf(f_out, "\n");
-}
-
-static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u)
-{
- unsigned char *p = (unsigned char *) io_u->buf;
- unsigned long c;
-
- p += sizeof(*hdr);
- c = crc32(p, hdr->len - sizeof(*hdr));
-
- if (c != hdr->crc32) {
- log_err("crc32: verify failed at %llu/%u\n", io_u->offset, io_u->buflen);
- log_err("crc32: wanted %lx, got %lx\n", hdr->crc32, c);
- return 1;
- }
-
- return 0;
-}
-
-static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u)
-{
- unsigned char *p = (unsigned char *) io_u->buf;
- struct md5_ctx md5_ctx;
-
- memset(&md5_ctx, 0, sizeof(md5_ctx));
- p += sizeof(*hdr);
- md5_update(&md5_ctx, p, hdr->len - sizeof(*hdr));
-
- if (memcmp(hdr->md5_digest, md5_ctx.hash, sizeof(md5_ctx.hash))) {
- log_err("md5: verify failed at %llu/%u\n", io_u->offset, io_u->buflen);
- hexdump(hdr->md5_digest, sizeof(hdr->md5_digest));
- hexdump(md5_ctx.hash, sizeof(md5_ctx.hash));
+ if (mtime_since(&td->epoch, t) >= td->o.timeout * 1000)
return 1;
- }
return 0;
}
-static int verify_io_u(struct io_u *io_u)
-{
- struct verify_header *hdr = (struct verify_header *) io_u->buf;
- int ret;
-
- if (hdr->fio_magic != FIO_HDR_MAGIC)
- return 1;
-
- if (hdr->verify_type == VERIFY_MD5)
- ret = verify_io_u_md5(hdr, io_u);
- else if (hdr->verify_type == VERIFY_CRC32)
- ret = verify_io_u_crc32(hdr, io_u);
- else {
- log_err("Bad verify type %d\n", hdr->verify_type);
- ret = 1;
- }
-
- return ret;
-}
-
-static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
-{
- hdr->crc32 = crc32(p, len);
-}
-
-static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
-{
- struct md5_ctx md5_ctx;
-
- memset(&md5_ctx, 0, sizeof(md5_ctx));
- md5_update(&md5_ctx, p, len);
- memcpy(hdr->md5_digest, md5_ctx.hash, sizeof(md5_ctx.hash));
-}
-
-static int get_rw_ddir(struct thread_data *td)
-{
- if (td_rw(td)) {
- struct timeval now;
- unsigned long elapsed;
-
- gettimeofday(&now, NULL);
- elapsed = mtime_since_now(&td->rwmix_switch);
-
- /*
- * Check if it's time to seed a new data direction.
- */
- if (elapsed >= td->rwmixcycle) {
- int v;
- long r;
-
- r = os_random_long(&td->rwmix_state);
- v = 1 + (int) (100.0 * (r / (RAND_MAX + 1.0)));
- if (v < td->rwmixread)
- td->rwmix_ddir = DDIR_READ;
- else
- td->rwmix_ddir = DDIR_WRITE;
- memcpy(&td->rwmix_switch, &now, sizeof(now));
- }
- return td->rwmix_ddir;
- } else if (td_read(td))
- return DDIR_READ;
- else
- return DDIR_WRITE;
-}
-
/*
- * fill body of io_u->buf with random data and add a header with the
- * crc32 or md5 sum of that data.
+ * When job exits, we can cancel the in-flight IO if we are using async
+ * io. Attempt to do so.
*/
-static void populate_io_u(struct thread_data *td, struct io_u *io_u)
-{
- unsigned char *p = (unsigned char *) io_u->buf;
- struct verify_header hdr;
-
- hdr.fio_magic = FIO_HDR_MAGIC;
- hdr.len = io_u->buflen;
- p += sizeof(hdr);
- fill_random_bytes(td, p, io_u->buflen - sizeof(hdr));
-
- if (td->verify == VERIFY_MD5) {
- fill_md5(&hdr, p, io_u->buflen - sizeof(hdr));
- hdr.verify_type = VERIFY_MD5;
- } else {
- fill_crc32(&hdr, p, io_u->buflen - sizeof(hdr));
- hdr.verify_type = VERIFY_CRC32;
- }
-
- memcpy(io_u->buf, &hdr, sizeof(hdr));
-}
-
-static int td_io_prep(struct thread_data *td, struct io_u *io_u)
-{
- if (td->io_prep && td->io_prep(td, io_u))
- return 1;
-
- return 0;
-}
-
-void put_io_u(struct thread_data *td, struct io_u *io_u)
+static void cleanup_pending_aio(struct thread_data *td)
{
- list_del(&io_u->list);
- list_add(&io_u->list, &td->io_u_freelist);
- td->cur_depth--;
-}
+ struct list_head *entry, *n;
+ struct io_u *io_u;
+ int r;
-static int fill_io_u(struct thread_data *td, struct io_u *io_u)
-{
/*
- * If using an iolog, grab next piece if any available.
+ * get immediately available events, if any
*/
- if (td->read_iolog)
- return read_iolog_get(td, io_u);
+ r = io_u_queued_complete(td, 0);
+ if (r < 0)
+ return;
/*
- * No log, let the seq/rand engine retrieve the next position.
+ * now cancel remaining active events
*/
- if (!get_next_offset(td, &io_u->offset)) {
- io_u->buflen = get_next_buflen(td);
-
- if (io_u->buflen) {
- io_u->ddir = get_rw_ddir(td);
+ if (td->io_ops->cancel) {
+ list_for_each_safe(entry, n, &td->io_u_busylist) {
+ io_u = list_entry(entry, struct io_u, list);
/*
- * If using a write iolog, store this entry.
+ * 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 (td->write_iolog)
- write_iolog_put(td, io_u);
-
- return 0;
+ 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);
+ }
}
}
- return 1;
-}
-
-#define queue_full(td) list_empty(&(td)->io_u_freelist)
-
-struct io_u *__get_io_u(struct thread_data *td)
-{
- struct io_u *io_u = NULL;
-
- if (!queue_full(td)) {
- io_u = list_entry(td->io_u_freelist.next, struct io_u, list);
-
- io_u->error = 0;
- io_u->resid = 0;
- list_del(&io_u->list);
- list_add(&io_u->list, &td->io_u_busylist);
- td->cur_depth++;
- }
-
- return io_u;
+ if (td->cur_depth)
+ r = io_u_queued_complete(td, td->cur_depth);
}
-static struct io_u *get_io_u(struct thread_data *td)
+/*
+ * 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;
+ struct io_u *io_u = __get_io_u(td);
+ int ret;
- io_u = __get_io_u(td);
if (!io_u)
- return NULL;
-
- if (td->zone_bytes >= td->zone_size) {
- td->zone_bytes = 0;
- td->last_pos += td->zone_skip;
- }
-
- if (fill_io_u(td, io_u)) {
- put_io_u(td, io_u);
- return NULL;
- }
-
- if (io_u->buflen + io_u->offset > td->real_file_size)
- io_u->buflen = td->real_file_size - io_u->offset;
-
- if (!io_u->buflen) {
- put_io_u(td, io_u);
- return NULL;
- }
-
- if (!td->read_iolog && !td->sequential)
- mark_random_map(td, io_u);
-
- td->last_pos += io_u->buflen;
+ return 1;
- if (td->verify != VERIFY_NONE)
- populate_io_u(td, io_u);
+ io_u->ddir = DDIR_SYNC;
+ io_u->file = f;
if (td_io_prep(td, io_u)) {
put_io_u(td, io_u);
- return NULL;
+ return 1;
}
- gettimeofday(&io_u->start_time, NULL);
- return io_u;
-}
-
-static inline void td_set_runstate(struct thread_data *td, int runstate)
-{
- td->runstate = runstate;
-}
-
-static int get_next_verify(struct thread_data *td, struct io_u *io_u)
-{
- struct io_piece *ipo;
-
- if (!list_empty(&td->io_hist_list)) {
- ipo = list_entry(td->io_hist_list.next, struct io_piece, list);
-
- list_del(&ipo->list);
+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) < 0)
+ return 1;
+ } else if (ret == FIO_Q_COMPLETED) {
+ if (io_u->error) {
+ td_verror(td, io_u->error, "td_io_queue");
+ return 1;
+ }
- io_u->offset = ipo->offset;
- io_u->buflen = ipo->len;
- io_u->ddir = DDIR_READ;
- free(ipo);
- return 0;
+ if (io_u_sync_complete(td, io_u) < 0)
+ return 1;
+ } else if (ret == FIO_Q_BUSY) {
+ if (td_io_commit(td))
+ return 1;
+ goto requeue;
}
- return 1;
-}
-
-static int sync_td(struct thread_data *td)
-{
- if (td->io_sync)
- return td->io_sync(td);
-
return 0;
}
-static int io_u_getevents(struct thread_data *td, int min, int max,
- struct timespec *t)
-{
- return td->io_getevents(td, min, max, t);
-}
-
-static int io_u_queue(struct thread_data *td, struct io_u *io_u)
-{
- gettimeofday(&io_u->issue_time, NULL);
-
- return td->io_queue(td, io_u);
-}
-
-#define iocb_time(iocb) ((unsigned long) (iocb)->data)
-
-static void io_completed(struct thread_data *td, struct io_u *io_u,
- struct io_completion_data *icd)
-{
- struct timeval e;
- unsigned long msec;
-
- gettimeofday(&e, NULL);
-
- if (!io_u->error) {
- unsigned int bytes = io_u->buflen - io_u->resid;
- const int idx = io_u->ddir;
-
- td->io_blocks[idx]++;
- td->io_bytes[idx] += bytes;
- td->zone_bytes += bytes;
- td->this_io_bytes[idx] += bytes;
-
- msec = mtime_since(&io_u->issue_time, &e);
-
- add_clat_sample(td, idx, msec);
- add_bw_sample(td, idx);
-
- if ((td_rw(td) || td_write(td)) && idx == DDIR_WRITE)
- log_io_piece(td, io_u);
-
- icd->bytes_done[idx] += bytes;
- } else
- icd->error = io_u->error;
-}
-
-static void ios_completed(struct thread_data *td,struct io_completion_data *icd)
-{
- struct io_u *io_u;
- int i;
-
- icd->error = 0;
- icd->bytes_done[0] = icd->bytes_done[1] = 0;
-
- for (i = 0; i < icd->nr; i++) {
- io_u = td->io_event(td, i);
-
- io_completed(td, io_u, icd);
- put_io_u(td, io_u);
- }
-}
-
-static void cleanup_pending_aio(struct thread_data *td)
+/*
+ * 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 timespec ts = { .tv_sec = 0, .tv_nsec = 0};
- struct list_head *entry, *n;
- struct io_completion_data icd;
+ struct fio_file *f;
struct io_u *io_u;
- int r;
-
- /*
- * get immediately available events, if any
- */
- r = io_u_getevents(td, 0, td->cur_depth, &ts);
- if (r > 0) {
- icd.nr = r;
- ios_completed(td, &icd);
- }
+ int ret, min_events;
+ unsigned int i;
/*
- * now cancel remaining active events
+ * sync io first and invalidate cache, to make sure we really
+ * read from disk.
*/
- if (td->io_cancel) {
- list_for_each_safe(entry, n, &td->io_u_busylist) {
- io_u = list_entry(entry, struct io_u, list);
-
- r = td->io_cancel(td, io_u);
- if (!r)
- put_io_u(td, io_u);
- }
- }
-
- if (td->cur_depth) {
- r = io_u_getevents(td, td->cur_depth, td->cur_depth, NULL);
- if (r > 0) {
- icd.nr = r;
- ios_completed(td, &icd);
- }
- }
-}
-
-static int do_io_u_verify(struct thread_data *td, struct io_u **io_u)
-{
- struct io_u *v_io_u = *io_u;
- int ret = 0;
-
- if (v_io_u) {
- ret = verify_io_u(v_io_u);
- put_io_u(td, v_io_u);
- *io_u = NULL;
+ for_each_file(td, f, i) {
+ if (!(f->flags & FIO_FILE_OPEN))
+ continue;
+ if (fio_io_sync(td, f))
+ break;
+ if (file_invalidate_cache(td, f))
+ break;
}
- return ret;
-}
-
-static void do_verify(struct thread_data *td)
-{
- struct timeval t;
- struct io_u *io_u, *v_io_u = NULL;
- struct io_completion_data icd;
- int ret;
+ if (td->error)
+ return;
td_set_runstate(td, TD_VERIFYING);
- do {
- if (td->terminate)
- break;
-
- gettimeofday(&t, NULL);
- if (runtime_exceeded(td, &t))
- break;
+ io_u = NULL;
+ while (!td->terminate) {
+ int ret2;
io_u = __get_io_u(td);
if (!io_u)
break;
- if (get_next_verify(td, io_u)) {
+ if (runtime_exceeded(td, &io_u->start_time)) {
put_io_u(td, io_u);
+ td->terminate = 1;
break;
}
- if (td_io_prep(td, io_u)) {
+ if (get_next_verify(td, io_u)) {
put_io_u(td, io_u);
break;
}
- ret = io_u_queue(td, io_u);
- if (ret) {
+ if (td_io_prep(td, io_u)) {
put_io_u(td, io_u);
- td_verror(td, ret);
break;
}
- /*
- * we have one pending to verify, do that while
- * we are doing io on the next one
- */
- if (do_io_u_verify(td, &v_io_u))
- break;
+ 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;
+ 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, ENODATA, "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;
+ f->last_completed_pos = io_u->offset;
+
+ td->ts.short_io_u[io_u->ddir]++;
+
+ if (io_u->offset == f->real_file_size)
+ goto sync_done;
- ret = io_u_getevents(td, 1, 1, NULL);
- if (ret != 1) {
- if (ret < 0)
- td_verror(td, ret);
+ requeue_io_u(td, &io_u);
+ } else {
+sync_done:
+ ret = io_u_sync_complete(td, io_u);
+ 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;
}
- v_io_u = td->io_event(td, 0);
- icd.nr = 1;
- icd.error = 0;
- io_completed(td, v_io_u, &icd);
-
- if (icd.error) {
- td_verror(td, icd.error);
- put_io_u(td, v_io_u);
- v_io_u = NULL;
+ if (ret < 0 || td->error)
break;
+
+ /*
+ * if we can queue more, do so. but check if there are
+ * completed io_u's first.
+ */
+ min_events = 0;
+ if (queue_full(td) || ret == FIO_Q_BUSY) {
+ min_events = 1;
+
+ if (td->cur_depth > td->o.iodepth_low)
+ min_events = td->cur_depth - td->o.iodepth_low;
}
/*
- * if we can't submit more io, we need to verify now
+ * Reap required number of io units, if any, and do the
+ * verification on them through the callback handler
*/
- if (queue_full(td) && do_io_u_verify(td, &v_io_u))
+ if (io_u_queued_complete(td, min_events) < 0)
break;
+ }
- } while (1);
-
- do_io_u_verify(td, &v_io_u);
+ if (!td->error) {
+ min_events = td->cur_depth;
- if (td->cur_depth)
+ if (min_events)
+ ret = io_u_queued_complete(td, min_events);
+ } else
cleanup_pending_aio(td);
td_set_runstate(td, TD_RUNNING);
}
/*
- * Main IO worker functions. It retrieves io_u's to process and queues
+ * 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)
{
- struct io_completion_data icd;
- struct timeval s, e;
+ struct timeval s;
unsigned long usec;
+ unsigned int i;
+ int ret = 0;
td_set_runstate(td, TD_RUNNING);
- while (td->this_io_bytes[td->ddir] < td->io_size) {
- struct timespec ts = { .tv_sec = 0, .tv_nsec = 0};
- struct timespec *timeout;
- int ret, min_evts = 0;
+ while ((td->this_io_bytes[0] + td->this_io_bytes[1]) < td->o.size) {
+ struct timeval comp_time;
+ long bytes_done = 0;
+ int min_evts = 0;
struct io_u *io_u;
+ int ret2;
if (td->terminate)
break;
memcpy(&s, &io_u->start_time, sizeof(s));
- ret = io_u_queue(td, io_u);
- if (ret) {
+ if (runtime_exceeded(td, &s)) {
put_io_u(td, io_u);
- td_verror(td, ret);
- break;
- }
-
- add_slat_sample(td, io_u->ddir, mtime_since(&io_u->start_time, &io_u->issue_time));
-
- if (td->cur_depth < td->iodepth) {
- timeout = &ts;
- min_evts = 0;
- } else {
- timeout = NULL;
- min_evts = 1;
- }
-
- ret = io_u_getevents(td, min_evts, td->cur_depth, timeout);
- if (ret < 0) {
- td_verror(td, ret);
- break;
- } else if (!ret)
- continue;
-
- icd.nr = ret;
- ios_completed(td, &icd);
- if (icd.error) {
- td_verror(td, icd.error);
+ td->terminate = 1;
break;
}
/*
- * the rate is batched for now, it should work for batches
- * of completions except the very first one which may look
- * a little bursty
+ * Add verification end_io handler, if asked to verify
+ * a previously written file.
*/
- gettimeofday(&e, NULL);
- usec = utime_since(&s, &e);
-
- rate_throttle(td, usec, icd.bytes_done[td->ddir]);
-
- if (check_min_rate(td, &e)) {
- td_verror(td, ENOMEM);
- break;
- }
-
- if (runtime_exceeded(td, &e))
- break;
-
- if (td->thinktime)
- usec_sleep(td, td->thinktime);
-
- if (should_fsync(td) && td->fsync_blocks &&
- (td->io_blocks[DDIR_WRITE] % td->fsync_blocks) == 0)
- sync_td(td);
- }
-
- if (td->cur_depth)
- cleanup_pending_aio(td);
-
- if (should_fsync(td) && td->end_fsync) {
- td_set_runstate(td, TD_FSYNCING);
- sync_td(td);
- }
-}
-
-static void cleanup_io(struct thread_data *td)
-{
- if (td->io_cleanup)
- td->io_cleanup(td);
-}
-
-static int init_io(struct thread_data *td)
-{
- if (td->io_engine == FIO_SYNCIO)
- return fio_syncio_init(td);
- else if (td->io_engine == FIO_MMAPIO)
- return fio_mmapio_init(td);
- else if (td->io_engine == FIO_LIBAIO)
- return fio_libaio_init(td);
- else if (td->io_engine == FIO_POSIXAIO)
- return fio_posixaio_init(td);
- else if (td->io_engine == FIO_SGIO)
- return fio_sgio_init(td);
- else if (td->io_engine == FIO_SPLICEIO)
- return fio_spliceio_init(td);
- else {
- log_err("bad io_engine %d\n", td->io_engine);
- return 1;
- }
-}
-
-static void cleanup_io_u(struct thread_data *td)
-{
- struct list_head *entry, *n;
- struct io_u *io_u;
-
- list_for_each_safe(entry, n, &td->io_u_freelist) {
- io_u = list_entry(entry, struct io_u, list);
-
- list_del(&io_u->list);
- free(io_u);
- }
-
- if (td->mem_type == MEM_MALLOC)
- free(td->orig_buffer);
- else if (td->mem_type == MEM_SHM) {
- struct shmid_ds sbuf;
-
- shmdt(td->orig_buffer);
- shmctl(td->shm_id, IPC_RMID, &sbuf);
- } else if (td->mem_type == MEM_MMAP)
- munmap(td->orig_buffer, td->orig_buffer_size);
- else
- log_err("Bad memory type %d\n", td->mem_type);
-
- td->orig_buffer = NULL;
-}
-
-static int init_io_u(struct thread_data *td)
-{
- struct io_u *io_u;
- int i, max_units;
- char *p;
-
- if (td->io_engine & FIO_SYNCIO)
- max_units = 1;
- else
- max_units = td->iodepth;
-
- td->orig_buffer_size = td->max_bs * max_units + MASK;
-
- if (td->mem_type == MEM_MALLOC)
- td->orig_buffer = malloc(td->orig_buffer_size);
- else if (td->mem_type == MEM_SHM) {
- td->shm_id = shmget(IPC_PRIVATE, td->orig_buffer_size, IPC_CREAT | 0600);
- if (td->shm_id < 0) {
- td_verror(td, errno);
- perror("shmget");
- return 1;
- }
-
- td->orig_buffer = shmat(td->shm_id, NULL, 0);
- if (td->orig_buffer == (void *) -1) {
- td_verror(td, errno);
- perror("shmat");
- td->orig_buffer = NULL;
- return 1;
- }
- } else if (td->mem_type == MEM_MMAP) {
- td->orig_buffer = mmap(NULL, td->orig_buffer_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | OS_MAP_ANON, 0, 0);
- if (td->orig_buffer == MAP_FAILED) {
- td_verror(td, errno);
- perror("mmap");
- td->orig_buffer = NULL;
- return 1;
- }
- }
-
- p = ALIGN(td->orig_buffer);
- for (i = 0; i < max_units; i++) {
- io_u = malloc(sizeof(*io_u));
- memset(io_u, 0, sizeof(*io_u));
- INIT_LIST_HEAD(&io_u->list);
-
- io_u->buf = p + td->max_bs * i;
- io_u->index = i;
- list_add(&io_u->list, &td->io_u_freelist);
- }
-
- return 0;
-}
-
-static int create_file(struct thread_data *td, unsigned long long size,
- int extend)
-{
- unsigned long long left;
- unsigned int bs;
- int r, oflags;
- char *b;
-
- /*
- * unless specifically asked for overwrite, let normal io extend it
- */
- if (td_write(td) && !td->overwrite) {
- td->real_file_size = size;
- return 0;
- }
-
- if (!size) {
- log_err("Need size for create\n");
- td_verror(td, EINVAL);
- return 1;
- }
-
- temp_stall_ts = 1;
-
- if (!extend) {
- oflags = O_CREAT | O_TRUNC;
- fprintf(f_out, "%s: Laying out IO file (%LuMiB)\n", td->name, size >> 20);
- } else {
- oflags = O_APPEND;
- fprintf(f_out, "%s: Extending IO file (%Lu -> %LuMiB)\n", td->name, (td->file_size - size) >> 20, td->file_size >> 20);
- }
-
- td->fd = open(td->file_name, O_WRONLY | oflags, 0644);
- if (td->fd < 0) {
- td_verror(td, errno);
- goto done_noclose;
- }
-
- if (!extend && ftruncate(td->fd, td->file_size) == -1) {
- td_verror(td, errno);
- goto done;
- }
-
- td->io_size = td->file_size;
- b = malloc(td->max_bs);
- memset(b, 0, td->max_bs);
+ if (td->o.verify != VERIFY_NONE)
+ 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;
+ 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, ENODATA, "full resid");
+ put_io_u(td, io_u);
+ break;
+ }
- left = size;
- while (left && !td->terminate) {
- bs = td->max_bs;
- if (bs > left)
- bs = left;
+ io_u->xfer_buflen = io_u->resid;
+ io_u->xfer_buf += bytes;
+ io_u->offset += bytes;
+ f->last_completed_pos = io_u->offset;
- r = write(td->fd, b, bs);
+ td->ts.short_io_u[io_u->ddir]++;
- if (r == (int) bs) {
- left -= bs;
- continue;
- } else {
- if (r < 0)
- td_verror(td, errno);
- else
- td_verror(td, EIO);
+ if (io_u->offset == f->real_file_size)
+ goto sync_done;
+ requeue_io_u(td, &io_u);
+ } else {
+sync_done:
+ fio_gettime(&comp_time, NULL);
+ bytes_done = io_u_sync_complete(td, io_u);
+ if (bytes_done < 0)
+ ret = bytes_done;
+ }
+ 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 (td->terminate)
- unlink(td->file_name);
- else if (td->create_fsync)
- fsync(td->fd);
-
- free(b);
-done:
- close(td->fd);
- td->fd = -1;
-done_noclose:
- temp_stall_ts = 0;
- return 0;
-}
-
-static int file_size(struct thread_data *td)
-{
- struct stat st;
-
- if (td->overwrite) {
- if (fstat(td->fd, &st) == -1) {
- td_verror(td, errno);
- return 1;
- }
-
- td->real_file_size = st.st_size;
- if (!td->file_size || td->file_size > td->real_file_size)
- td->file_size = td->real_file_size;
- }
-
- td->file_size -= td->file_offset;
- return 0;
-}
-
-static int bdev_size(struct thread_data *td)
-{
- unsigned long long bytes;
- int r;
-
- r = blockdev_size(td->fd, &bytes);
- if (r) {
- td_verror(td, r);
- return 1;
- }
-
- td->real_file_size = bytes;
-
- /*
- * no extend possibilities, so limit size to device size if too large
- */
- if (!td->file_size || td->file_size > td->real_file_size)
- td->file_size = td->real_file_size;
-
- td->file_size -= td->file_offset;
- return 0;
-}
-
-static int get_file_size(struct thread_data *td)
-{
- int ret = 0;
-
- if (td->filetype == FIO_TYPE_FILE)
- ret = file_size(td);
- else if (td->filetype == FIO_TYPE_BD)
- ret = bdev_size(td);
- else
- td->real_file_size = -1;
-
- if (ret)
- return ret;
-
- if (td->file_offset > td->real_file_size) {
- log_err("%s: offset extends end (%Lu > %Lu)\n", td->name, td->file_offset, td->real_file_size);
- return 1;
- }
-
- td->io_size = td->file_size;
- if (td->io_size == 0) {
- log_err("%s: no io blocks\n", td->name);
- td_verror(td, EINVAL);
- return 1;
- }
-
- if (!td->zone_size)
- td->zone_size = td->io_size;
-
- td->total_io_size = td->io_size * td->loops;
- return 0;
-}
-
-static int setup_file_mmap(struct thread_data *td)
-{
- int flags;
-
- if (td_rw(td))
- flags = PROT_READ | PROT_WRITE;
- else if (td_write(td)) {
- flags = PROT_WRITE;
+ if (ret < 0 || td->error)
+ break;
- if (td->verify != VERIFY_NONE)
- flags |= PROT_READ;
- } else
- flags = PROT_READ;
+ /*
+ * See if we need to complete some commands
+ */
+ if (ret == FIO_Q_QUEUED || ret == FIO_Q_BUSY) {
+ min_evts = 0;
+ if (queue_full(td) || ret == FIO_Q_BUSY) {
+ min_evts = 1;
- td->mmap = mmap(NULL, td->file_size, flags, MAP_SHARED, td->fd, td->file_offset);
- if (td->mmap == MAP_FAILED) {
- td->mmap = NULL;
- td_verror(td, errno);
- return 1;
- }
+ if (td->cur_depth > td->o.iodepth_low)
+ min_evts = td->cur_depth - td->o.iodepth_low;
+ }
- if (td->invalidate_cache) {
- if (madvise(td->mmap, td->file_size, MADV_DONTNEED) < 0) {
- td_verror(td, errno);
- return 1;
+ fio_gettime(&comp_time, NULL);
+ bytes_done = io_u_queued_complete(td, min_evts);
+ if (bytes_done < 0)
+ break;
}
- }
- if (td->sequential) {
- if (madvise(td->mmap, td->file_size, MADV_SEQUENTIAL) < 0) {
- td_verror(td, errno);
- return 1;
- }
- } else {
- if (madvise(td->mmap, td->file_size, MADV_RANDOM) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
+ if (!bytes_done)
+ continue;
- return 0;
-}
+ /*
+ * the rate is batched for now, it should work for batches
+ * of completions except the very first one which may look
+ * a little bursty
+ */
+ usec = utime_since(&s, &comp_time);
-static int setup_file_plain(struct thread_data *td)
-{
- if (td->invalidate_cache) {
- if (fadvise(td->fd, td->file_offset, td->file_size, POSIX_FADV_DONTNEED) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
+ rate_throttle(td, usec, bytes_done);
- if (td->sequential) {
- if (fadvise(td->fd, td->file_offset, td->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
- td_verror(td, errno);
- return 1;
+ if (check_min_rate(td, &comp_time)) {
+ if (exitall_on_terminate)
+ terminate_threads(td->groupid);
+ td_verror(td, ENODATA, "check_min_rate");
+ break;
}
- } else {
- if (fadvise(td->fd, td->file_offset, td->file_size, POSIX_FADV_RANDOM) < 0) {
- td_verror(td, errno);
- return 1;
+
+ 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_sleep(td->o.thinktime_spin);
+
+ left = td->o.thinktime - td->o.thinktime_spin;
+ if (left)
+ usec_sleep(td, left);
+ }
}
}
- return 0;
+ if (!td->error) {
+ struct fio_file *f;
+
+ i = td->cur_depth;
+ if (i)
+ ret = io_u_queued_complete(td, i);
+
+ if (should_fsync(td) && td->o.end_fsync) {
+ td_set_runstate(td, TD_FSYNCING);
+
+ for_each_file(td, f, i) {
+ if (!(f->flags & FIO_FILE_OPEN))
+ continue;
+ fio_io_sync(td, f);
+ }
+ }
+ } else
+ cleanup_pending_aio(td);
}
-static int setup_file(struct thread_data *td)
+static void cleanup_io_u(struct thread_data *td)
{
- struct stat st;
- int flags = 0;
+ struct list_head *entry, *n;
+ struct io_u *io_u;
- if (stat(td->file_name, &st) == -1) {
- if (errno != ENOENT) {
- td_verror(td, errno);
- return 1;
- }
- if (!td->create_file) {
- td_verror(td, ENOENT);
- return 1;
- }
- if (create_file(td, td->file_size, 0))
- return 1;
- } else if (td->filetype == FIO_TYPE_FILE) {
- if (st.st_size < (off_t) td->file_size) {
- if (create_file(td, td->file_size - st.st_size, 1))
- return 1;
- }
+ list_for_each_safe(entry, n, &td->io_u_freelist) {
+ io_u = list_entry(entry, struct io_u, list);
+
+ list_del(&io_u->list);
+ free(io_u);
}
- if (td->odirect)
- flags |= OS_O_DIRECT;
+ free_io_mem(td);
+}
- if (td_write(td) || td_rw(td)) {
- if (td->filetype == FIO_TYPE_FILE) {
- if (!td->overwrite)
- flags |= O_TRUNC;
+/*
+ * "randomly" fill the buffer contents
+ */
+static void fill_io_buf(struct thread_data *td, struct io_u *io_u, int max_bs)
+{
+ long *ptr = io_u->buf;
- flags |= O_CREAT;
+ if (!td->o.zero_buffers) {
+ while ((void *) ptr - io_u->buf < max_bs) {
+ *ptr = rand() * GOLDEN_RATIO_PRIME;
+ ptr++;
}
- if (td->sync_io)
- flags |= O_SYNC;
+ } else
+ memset(ptr, 0, max_bs);
+}
+
+static int init_io_u(struct thread_data *td)
+{
+ struct io_u *io_u;
+ unsigned int max_bs;
+ int i, max_units;
+ char *p;
- flags |= O_RDWR;
+ if (td->io_ops->flags & FIO_SYNCIO)
+ max_units = 1;
+ else
+ max_units = td->o.iodepth;
- td->fd = open(td->file_name, flags, 0600);
- } else {
- if (td->filetype == FIO_TYPE_CHAR)
- flags |= O_RDWR;
- else
- flags |= O_RDONLY;
+ 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;
- td->fd = open(td->file_name, flags);
- }
+ if (td->o.mem_type == MEM_SHMHUGE || td->o.mem_type == MEM_MMAPHUGE)
+ td->orig_buffer_size = (td->orig_buffer_size + td->o.hugepage_size - 1) & ~(td->o.hugepage_size - 1);
- if (td->fd == -1) {
- td_verror(td, errno);
+ 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 (get_file_size(td))
+ if (allocate_io_mem(td))
return 1;
- if (td->io_engine != FIO_MMAPIO)
- return setup_file_plain(td);
+ if (td->o.odirect)
+ p = ALIGN(td->orig_buffer);
else
- return setup_file_mmap(td);
+ p = td->orig_buffer;
+
+ for (i = 0; i < max_units; i++) {
+ if (td->terminate)
+ return 1;
+ io_u = malloc(sizeof(*io_u));
+ memset(io_u, 0, sizeof(*io_u));
+ INIT_LIST_HEAD(&io_u->list);
+
+ io_u->buf = p + max_bs * i;
+
+ if (td_write(td))
+ fill_io_buf(td, io_u, max_bs);
+
+ io_u->index = i;
+ io_u->flags = IO_U_F_FREE;
+ list_add(&io_u->list, &td->io_u_freelist);
+ }
+
+ io_u_init_timeout();
+
+ return 0;
}
static int switch_ioscheduler(struct thread_data *td)
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) {
- td_verror(td, errno);
+ 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->ioscheduler, strlen(td->ioscheduler), 1, f);
+ ret = fwrite(td->o.ioscheduler, strlen(td->o.ioscheduler), 1, f);
if (ferror(f) || ret != 1) {
- td_verror(td, errno);
+ td_verror(td, errno, "fwrite");
fclose(f);
return 1;
}
*/
ret = fread(tmp, 1, sizeof(tmp), f);
if (ferror(f) || ret < 0) {
- td_verror(td, errno);
+ td_verror(td, errno, "fread");
fclose(f);
return 1;
}
- sprintf(tmp2, "[%s]", td->ioscheduler);
+ sprintf(tmp2, "[%s]", td->o.ioscheduler);
if (!strstr(tmp, tmp2)) {
- log_err("fio: io scheduler %s not found\n", td->ioscheduler);
- td_verror(td, EINVAL);
+ log_err("fio: io scheduler %s not found\n", td->o.ioscheduler);
+ td_verror(td, EINVAL, "iosched_switch");
fclose(f);
return 1;
}
return 0;
}
-static void clear_io_state(struct thread_data *td)
+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 int clear_io_state(struct thread_data *td)
{
- if (td->io_engine == FIO_SYNCIO)
- lseek(td->fd, SEEK_SET, 0);
+ struct fio_file *f;
+ unsigned int i;
+ int ret;
- td->last_pos = 0;
- td->stat_io_bytes[0] = td->stat_io_bytes[1] = 0;
+ 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_blocks = 0;
+ td->rw_end_set[0] = td->rw_end_set[1] = 0;
+
+ td->last_was_sync = 0;
+
+ if (td->o.time_based)
+ td->nr_done_files = 0;
- if (td->file_map)
- memset(td->file_map, 0, td->num_maps * sizeof(long));
+ for_each_file(td, f, i)
+ td_io_close_file(td, f);
+
+ ret = 0;
+ for_each_file(td, f, i) {
+ f->flags &= ~FIO_FILE_DONE;
+ ret = td_io_open_file(td, f);
+ if (ret)
+ break;
+ }
+
+ 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 runtime[2];
struct thread_data *td = data;
+ unsigned long elapsed;
+ int clear_state;
- if (!td->use_thread)
+ if (!td->o.use_thread)
setsid();
td->pid = getpid();
INIT_LIST_HEAD(&td->io_u_freelist);
INIT_LIST_HEAD(&td->io_u_busylist);
- INIT_LIST_HEAD(&td->io_hist_list);
+ INIT_LIST_HEAD(&td->io_u_requeues);
INIT_LIST_HEAD(&td->io_log_list);
+ INIT_LIST_HEAD(&td->io_hist_list);
+ td->io_hist_tree = RB_ROOT;
- if (init_io_u(td))
- goto err;
+ td_set_runstate(td, TD_INITIALIZED);
+ fio_sem_up(startup_sem);
+ fio_sem_down(td->mutex);
- if (fio_setaffinity(td) == -1) {
- td_verror(td, errno);
+ /*
+ * the ->mutex semaphore is now no longer used, close it to avoid
+ * eating a file descriptor
+ */
+ fio_sem_remove(td->mutex);
+
+ /*
+ * 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(td))
+ if (init_io_u(td))
goto err;
- if (init_iolog(td))
+ if (td->o.cpumask_set && fio_setaffinity(td) == -1) {
+ td_verror(td, errno, "cpu_set_affinity");
goto err;
+ }
if (td->ioprio) {
if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) {
- td_verror(td, errno);
+ td_verror(td, errno, "ioprio_set");
goto err;
}
}
- if (nice(td->nice) < 0) {
- td_verror(td, errno);
+ if (nice(td->o.nice) == -1) {
+ td_verror(td, errno, "nice");
goto err;
}
- if (init_random_state(td))
+ if (td->o.ioscheduler && switch_ioscheduler(td))
goto err;
- if (td->ioscheduler && switch_ioscheduler(td))
+ if (!td->o.create_serialize && setup_files(td))
goto err;
- td_set_runstate(td, TD_INITIALIZED);
- fio_sem_up(&startup_sem);
- fio_sem_down(&td->mutex);
+ if (td_io_init(td))
+ goto err;
- if (!td->create_serialize && setup_file(td))
+ if (open_files(td))
goto err;
- gettimeofday(&td->epoch, NULL);
+ if (init_random_map(td))
+ goto err;
+
+ if (td->o.exec_prerun) {
+ if (system(td->o.exec_prerun) < 0)
+ goto err;
+ }
- if (td->exec_prerun)
- system(td->exec_prerun);
+ fio_gettime(&td->epoch, NULL);
+ memcpy(&td->timeout_end, &td->epoch, sizeof(td->epoch));
+ getrusage(RUSAGE_SELF, &td->ts.ru_start);
- while (td->loops--) {
- getrusage(RUSAGE_SELF, &td->ru_start);
- gettimeofday(&td->start, NULL);
- memcpy(&td->stat_sample_time, &td->start, sizeof(td->start));
+ runtime[0] = runtime[1] = 0;
+ clear_state = 0;
+ while (keep_running(td)) {
+ fio_gettime(&td->start, NULL);
+ memcpy(&td->ts.stat_sample_time, &td->start, sizeof(td->start));
- if (td->ratemin)
- memcpy(&td->lastrate, &td->stat_sample_time, sizeof(td->lastrate));
+ if (td->o.ratemin)
+ memcpy(&td->lastrate, &td->ts.stat_sample_time, sizeof(td->lastrate));
+
+ if (clear_state && clear_io_state(td))
+ break;
- clear_io_state(td);
prune_io_piece_log(td);
do_io(td);
- td->runtime[td->ddir] += mtime_since_now(&td->start);
- if (td_rw(td) && td->io_bytes[td->ddir ^ 1])
- td->runtime[td->ddir ^ 1] = td->runtime[td->ddir];
+ clear_state = 1;
+
+ if (td_read(td) && td->io_bytes[DDIR_READ]) {
+ if (td->rw_end_set[DDIR_READ])
+ elapsed = utime_since(&td->start, &td->rw_end[DDIR_READ]);
+ else
+ elapsed = utime_since_now(&td->start);
- update_rusage_stat(td);
+ runtime[DDIR_READ] += elapsed;
+ }
+ if (td_write(td) && td->io_bytes[DDIR_WRITE]) {
+ if (td->rw_end_set[DDIR_WRITE])
+ elapsed = utime_since(&td->start, &td->rw_end[DDIR_WRITE]);
+ else
+ elapsed = utime_since_now(&td->start);
+ runtime[DDIR_WRITE] += elapsed;
+ }
+
if (td->error || td->terminate)
break;
- if (td->verify == VERIFY_NONE)
+ if (td->o.verify == VERIFY_NONE ||
+ (td->io_ops->flags & FIO_UNIDIR))
continue;
- clear_io_state(td);
- gettimeofday(&td->start, NULL);
+ if (clear_io_state(td))
+ break;
+
+ fio_gettime(&td->start, NULL);
do_verify(td);
- td->runtime[DDIR_READ] += mtime_since_now(&td->start);
+ runtime[DDIR_READ] += utime_since_now(&td->start);
if (td->error || td->terminate)
break;
}
- if (td->bw_log)
- finish_log(td, td->bw_log, "bw");
- if (td->slat_log)
- finish_log(td, td->slat_log, "slat");
- if (td->clat_log)
- finish_log(td, td->clat_log, "clat");
- if (td->write_iolog)
- write_iolog_close(td);
- if (td->exec_postrun)
- system(td->exec_postrun);
+ update_rusage_stat(td);
+ td->ts.runtime[0] = (runtime[0] + 999) / 1000;
+ td->ts.runtime[1] = (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];
+
+ if (td->ts.bw_log)
+ finish_log(td, td->ts.bw_log, "bw");
+ if (td->ts.slat_log)
+ finish_log(td, td->ts.slat_log, "slat");
+ if (td->ts.clat_log)
+ finish_log(td, td->ts.clat_log, "clat");
+ if (td->o.exec_postrun) {
+ if (system(td->o.exec_postrun) < 0)
+ log_err("fio: postrun %s failed\n", td->o.exec_postrun);
+ }
if (exitall_on_terminate)
terminate_threads(td->groupid);
err:
- if (td->fd != -1) {
- close(td->fd);
- td->fd = -1;
- }
- if (td->mmap)
- munmap(td->mmap, td->file_size);
- cleanup_io(td);
+ if (td->error)
+ printf("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror);
+ close_files(td);
+ close_ioengine(td);
cleanup_io_u(td);
- td_set_runstate(td, TD_EXITED);
- return NULL;
+ /*
+ * 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;
}
-static void *fork_main(int shmid, int offset)
+/*
+ * 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;
+ void *data, *ret;
data = shmat(shmid, NULL, 0);
if (data == (void *) -1) {
+ int __err = errno;
+
perror("shmat");
- return NULL;
+ return __err;
}
td = data + offset * sizeof(struct thread_data);
- thread_main(td);
+ ret = thread_main(td);
shmdt(data);
- return NULL;
-}
-
-static void check_str_update(struct thread_data *td)
-{
- char c = run_str[td->thread_number - 1];
-
- switch (td->runstate) {
- case TD_REAPED:
- c = '_';
- break;
- case TD_EXITED:
- c = 'E';
- break;
- case TD_RUNNING:
- if (td_rw(td)) {
- if (td->sequential)
- c = 'M';
- else
- c = 'm';
- } else if (td_read(td)) {
- if (td->sequential)
- c = 'R';
- else
- c = 'r';
- } else {
- if (td->sequential)
- c = 'W';
- else
- c = 'w';
- }
- break;
- case TD_VERIFYING:
- c = 'V';
- break;
- case TD_FSYNCING:
- c = 'F';
- break;
- case TD_CREATED:
- c = 'C';
- break;
- case TD_INITIALIZED:
- c = 'I';
- break;
- case TD_NOT_CREATED:
- c = 'P';
- break;
- default:
- log_err("state %d\n", td->runstate);
- }
-
- run_str[td->thread_number - 1] = c;
-}
-
-static void eta_to_str(char *str, int eta_sec)
-{
- unsigned int d, h, m, s;
- static int always_d, always_h;
-
- d = h = m = s = 0;
-
- s = eta_sec % 60;
- eta_sec /= 60;
- m = eta_sec % 60;
- eta_sec /= 60;
- h = eta_sec % 24;
- eta_sec /= 24;
- d = eta_sec;
-
- if (d || always_d) {
- always_d = 1;
- str += sprintf(str, "%02dd:", d);
- }
- if (h || always_h) {
- always_h = 1;
- str += sprintf(str, "%02dh:", h);
- }
-
- str += sprintf(str, "%02dm:", m);
- str += sprintf(str, "%02ds", s);
+ return (int) (unsigned long) ret;
}
-static int thread_eta(struct thread_data *td, unsigned long elapsed)
+/*
+ * 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)
{
- unsigned long long bytes_total, bytes_done;
- unsigned int eta_sec = 0;
-
- bytes_total = td->total_io_size;
+ struct thread_data *td;
+ int i, cputhreads, pending, status, ret;
/*
- * if writing, bytes_total will be twice the size. If mixing,
- * assume a 50/50 split and thus bytes_total will be 50% larger.
+ * reap exited threads (TD_EXITED -> TD_REAPED)
*/
- if (td->verify) {
- if (td_rw(td))
- bytes_total = bytes_total * 3 / 2;
- else
- bytes_total <<= 1;
- }
- if (td->zone_size && td->zone_skip)
- bytes_total /= (td->zone_skip / td->zone_size);
-
- if (td->runstate == TD_RUNNING || td->runstate == TD_VERIFYING) {
- double perc;
-
- bytes_done = td->io_bytes[DDIR_READ] + td->io_bytes[DDIR_WRITE];
- perc = (double) bytes_done / (double) bytes_total;
- if (perc > 1.0)
- perc = 1.0;
-
- eta_sec = (elapsed * (1.0 / perc)) - elapsed;
-
- if (td->timeout && eta_sec > (td->timeout - elapsed))
- eta_sec = td->timeout - elapsed;
- } else if (td->runstate == TD_NOT_CREATED || td->runstate == TD_CREATED
- || td->runstate == TD_INITIALIZED) {
- int t_eta = 0, r_eta = 0;
+ pending = cputhreads = 0;
+ for_each_td(td, i) {
+ int flags = 0;
/*
- * We can only guess - assume it'll run the full timeout
- * if given, otherwise assume it'll run at the specified rate.
+ * ->io_ops is NULL for a thread that has closed its
+ * io engine
*/
- if (td->timeout)
- t_eta = td->timeout + td->start_delay - elapsed;
- if (td->rate) {
- r_eta = (bytes_total / 1024) / td->rate;
- r_eta += td->start_delay - elapsed;
+ if (td->io_ops && !strcmp(td->io_ops->name, "cpuio"))
+ cputhreads++;
+
+ if (!td->pid || td->runstate == TD_REAPED)
+ continue;
+ if (td->o.use_thread) {
+ if (td->runstate == TD_EXITED) {
+ td_set_runstate(td, TD_REAPED);
+ goto reaped;
+ }
+ continue;
}
- if (r_eta && t_eta)
- eta_sec = min(r_eta, t_eta);
- else if (r_eta)
- eta_sec = r_eta;
- else if (t_eta)
- eta_sec = t_eta;
- else
- eta_sec = 0;
- } else {
+ flags = WNOHANG;
+ if (td->runstate == TD_EXITED)
+ flags = 0;
+
/*
- * thread is already done or waiting for fsync
+ * check if someone quit or got killed in an unusual way
*/
- eta_sec = 0;
- }
-
- return eta_sec;
-}
-
-static void print_thread_status(void)
-{
- unsigned long elapsed = time_since_now(&genesis);
- int i, nr_running, nr_pending, t_rate, m_rate, *eta_secs, eta_sec;
- char eta_str[32];
- double perc = 0.0;
-
- if (temp_stall_ts || terse_output)
- return;
-
- eta_secs = malloc(thread_number * sizeof(int));
- memset(eta_secs, 0, thread_number * sizeof(int));
-
- nr_pending = nr_running = t_rate = m_rate = 0;
- for (i = 0; i < thread_number; i++) {
- struct thread_data *td = &threads[i];
-
- if (td->runstate == TD_RUNNING || td->runstate == TD_VERIFYING||
- td->runstate == TD_FSYNCING) {
- nr_running++;
- t_rate += td->rate;
- m_rate += td->ratemin;
- } else if (td->runstate < TD_RUNNING)
- nr_pending++;
-
- if (elapsed >= 3)
- eta_secs[i] = thread_eta(td, elapsed);
- else
- eta_secs[i] = INT_MAX;
-
- check_str_update(td);
- }
-
- if (exitall_on_terminate)
- eta_sec = INT_MAX;
- else
- eta_sec = 0;
+ ret = waitpid(td->pid, &status, flags);
+ if (ret < 0) {
+ if (errno == ECHILD) {
+ log_err("fio: pid=%d disappeared %d\n", 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 != SIGQUIT)
+ log_err("fio: pid=%d, got signal=%d\n", td->pid, sig);
+ td_set_runstate(td, TD_REAPED);
+ goto reaped;
+ }
+ if (WIFEXITED(status)) {
+ if (WEXITSTATUS(status) && !td->error)
+ td->error = WEXITSTATUS(status);
- for (i = 0; i < thread_number; i++) {
- if (exitall_on_terminate) {
- if (eta_secs[i] < eta_sec)
- eta_sec = eta_secs[i];
- } else {
- if (eta_secs[i] > eta_sec)
- eta_sec = eta_secs[i];
+ td_set_runstate(td, TD_REAPED);
+ goto reaped;
+ }
}
- }
- if (eta_sec != INT_MAX && elapsed) {
- perc = (double) elapsed / (double) (elapsed + eta_sec);
- eta_to_str(eta_str, eta_sec);
- }
-
- if (!nr_running && !nr_pending)
- return;
-
- printf("Threads running: %d", nr_running);
- if (m_rate || t_rate)
- printf(", commitrate %d/%dKiB/sec", t_rate, m_rate);
- if (eta_sec != INT_MAX) {
- perc *= 100.0;
- printf(": [%s] [%3.2f%% done] [eta %s]", run_str, perc,eta_str);
- }
- printf("\r");
- fflush(stdout);
- free(eta_secs);
-}
-
-static void reap_threads(int *nr_running, int *t_rate, int *m_rate)
-{
- int i;
-
- /*
- * reap exited threads (TD_EXITED -> TD_REAPED)
- */
- for (i = 0; i < thread_number; i++) {
- struct thread_data *td = &threads[i];
-
- if (td->runstate != TD_EXITED)
- continue;
-
- td_set_runstate(td, TD_REAPED);
-
- if (td->use_thread) {
+ /*
+ * thread is not dead, continue
+ */
+ pending++;
+ continue;
+reaped:
+ if (td->o.use_thread) {
long ret;
if (pthread_join(td->thread, (void *) &ret))
- perror("thread_join");
- } else
- waitpid(td->pid, NULL, 0);
+ perror("pthread_join");
+ }
(*nr_running)--;
- (*m_rate) -= td->ratemin;
- (*t_rate) -= td->rate;
- }
-}
-
-static void fio_unpin_memory(void *pinned)
-{
- if (pinned) {
- if (munlock(pinned, mlock_size) < 0)
- perror("munlock");
- munmap(pinned, mlock_size);
- }
-}
-
-static void *fio_pin_memory(void)
-{
- unsigned long long phys_mem;
- void *ptr;
-
- if (!mlock_size)
- return NULL;
-
- /*
- * Don't allow mlock of more than real_mem-128MB
- */
- phys_mem = os_phys_mem();
- if (phys_mem) {
- if ((mlock_size + 128 * 1024 * 1024) > phys_mem) {
- mlock_size = phys_mem - 128 * 1024 * 1024;
- fprintf(f_out, "fio: limiting mlocked memory to %lluMiB\n", mlock_size >> 20);
- }
- }
+ (*m_rate) -= td->o.ratemin;
+ (*t_rate) -= td->o.rate;
+ pending--;
- ptr = mmap(NULL, mlock_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | OS_MAP_ANON, 0, 0);
- if (!ptr) {
- perror("malloc locked mem");
- return NULL;
- }
- if (mlock(ptr, mlock_size) < 0) {
- munmap(ptr, mlock_size);
- perror("mlock");
- return NULL;
+ if (td->error)
+ exit_value++;
}
- return ptr;
+ if (*nr_running == cputhreads && !pending)
+ terminate_threads(TERMINATE_ALL);
}
+/*
+ * 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;
- void *mlocked_mem;
- mlocked_mem = fio_pin_memory();
+ if (fio_pin_memory())
+ return;
if (!terse_output) {
- printf("Starting %d thread%s\n", thread_number, thread_number > 1 ? "s" : "");
+ printf("Starting ");
+ if (nr_thread)
+ printf("%d thread%s", nr_thread, nr_thread > 1 ? "s" : "");
+ if (nr_process) {
+ if (nr_thread)
+ printf(" and ");
+ printf("%d process%s", nr_process, nr_process > 1 ? "es" : "");
+ }
+ printf("\n");
fflush(stdout);
}
nr_started = 0;
m_rate = t_rate = 0;
- for (i = 0; i < thread_number; i++) {
- td = &threads[i];
+ for_each_td(td, i) {
+ print_status_init(td->thread_number - 1);
- run_str[td->thread_number - 1] = 'P';
-
- init_disk_util(td);
-
- if (!td->create_serialize)
+ if (!td->o.create_serialize) {
+ init_disk_util(td);
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_file(td)) {
+ if (setup_files(td)) {
+ exit_value++;
+ if (td->error)
+ log_err("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror);
td_set_runstate(td, TD_REAPED);
todo--;
}
+
+ init_disk_util(td);
}
- gettimeofday(&genesis, NULL);
+ set_genesis_time();
while (todo) {
struct thread_data *map[MAX_JOBS];
/*
* create threads (TD_NOT_CREATED -> TD_CREATED)
*/
- for (i = 0; i < thread_number; i++) {
- td = &threads[i];
-
+ for_each_td(td, i) {
if (td->runstate != TD_NOT_CREATED)
continue;
continue;
}
- if (td->start_delay) {
- spent = mtime_since_now(&genesis);
+ if (td->o.start_delay) {
+ spent = mtime_since_genesis();
- if (td->start_delay * 1000 > spent)
+ if (td->o.start_delay * 1000 > spent)
continue;
}
- if (td->stonewall && (nr_started || nr_running))
+ if (td->o.stonewall && (nr_started || nr_running))
break;
/*
*/
td_set_runstate(td, TD_CREATED);
map[this_jobs++] = td;
- fio_sem_init(&startup_sem, 1);
nr_started++;
- if (td->use_thread) {
+ if (td->o.use_thread) {
if (pthread_create(&td->thread, NULL, thread_main, td)) {
perror("thread_create");
nr_started--;
+ break;
}
} else {
- if (fork())
- fio_sem_down(&startup_sem);
- else {
- fork_main(shm_id, i);
- exit(0);
+ if (!fork()) {
+ int ret = fork_main(shm_id, i);
+
+ exit(ret);
}
}
+ fio_sem_down(startup_sem);
}
/*
* Wait for the started threads to transition to
* TD_INITIALIZED.
*/
- gettimeofday(&this_start, NULL);
+ fio_gettime(&this_start, NULL);
left = this_jobs;
- while (left) {
+ while (left && !fio_abort) {
if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)
break;
/*
* start created threads (TD_INITIALIZED -> TD_RUNNING).
*/
- for (i = 0; i < thread_number; i++) {
- td = &threads[i];
-
+ for_each_td(td, i) {
if (td->runstate != TD_INITIALIZED)
continue;
td_set_runstate(td, TD_RUNNING);
nr_running++;
nr_started--;
- m_rate += td->ratemin;
- t_rate += td->rate;
+ m_rate += td->o.ratemin;
+ t_rate += td->o.rate;
todo--;
- fio_sem_up(&td->mutex);
+ fio_sem_up(td->mutex);
}
reap_threads(&nr_running, &t_rate, &m_rate);
}
update_io_ticks();
- fio_unpin_memory(mlocked_mem);
+ fio_unpin_memory();
}
int main(int argc, char *argv[])
{
+ long ps;
+
+ /*
+ * We need locale for number printing, if it isn't set then just
+ * go with the US format.
+ */
+ if (!getenv("LC_NUMERIC"))
+ setlocale(LC_NUMERIC, "en_US");
+
if (parse_options(argc, argv))
return 1;
- if (!thread_number) {
- log_err("Nothing to do\n");
+ if (!thread_number)
+ return 0;
+
+ ps = sysconf(_SC_PAGESIZE);
+ if (ps < 0) {
+ log_err("Failed to get page size\n");
return 1;
}
+ page_size = ps;
+ page_mask = ps - 1;
+
+ if (write_bw_log) {
+ setup_log(&agg_io_log[DDIR_READ]);
+ setup_log(&agg_io_log[DDIR_WRITE]);
+ }
+
+ startup_sem = fio_sem_init(0);
+
+ set_genesis_time();
+
disk_util_timer_arm();
run_threads();
- show_run_stats();
- return 0;
+ 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");
+ }
+ }
+
+ fio_sem_remove(startup_sem);
+ return exit_value;
}