* fio - the flexible io tester
*
* Copyright (C) 2005 Jens Axboe <axboe@suse.de>
+ * Copyright (C) 2006 Jens Axboe <axboe@kernel.dk>
*
* 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
int groupid = 0;
int thread_number = 0;
-static char run_str[MAX_JOBS + 1];
int shm_id = 0;
-static struct timeval genesis;
-
-static void print_thread_status(void);
-
-extern unsigned long long mlock_size;
-
-/*
- * 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,
-};
+int temp_stall_ts;
+char *fio_inst_prefix = _INST_PREFIX;
#define should_fsync(td) ((td_write(td) || td_rw(td)) && (!(td)->odirect || (td)->override_sync))
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) {
td->terminate = 1;
td->start_delay = 0;
}
}
-static int random_map_free(struct thread_data *td, unsigned long long block)
+/*
+ * The ->file_map[] contains a map of blocks we have or have not done io
+ * to yet. Used to make sure we cover the entire range in a fair fashion.
+ */
+static int random_map_free(struct thread_data *td, struct fio_file *f,
+ unsigned long long block)
{
- unsigned int idx = RAND_MAP_IDX(td, block);
- unsigned int bit = RAND_MAP_BIT(td, block);
+ unsigned int idx = RAND_MAP_IDX(td, f, block);
+ unsigned int bit = RAND_MAP_BIT(td, f, block);
- return (td->file_map[idx] & (1UL << bit)) == 0;
+ return (f->file_map[idx] & (1UL << bit)) == 0;
}
-static int get_next_free_block(struct thread_data *td, unsigned long long *b)
+/*
+ * Return the next free block in the map.
+ */
+static int get_next_free_block(struct thread_data *td, struct fio_file *f,
+ 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]);
+ while ((*b) * td->min_bs < f->file_size) {
+ if (f->file_map[i] != -1UL) {
+ *b += ffz(f->file_map[i]);
return 0;
}
return 1;
}
-static void mark_random_map(struct thread_data *td, struct io_u *io_u)
+/*
+ * Mark a given offset as used in the map.
+ */
+static void mark_random_map(struct thread_data *td, struct fio_file *f,
+ 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))
+ if (!random_map_free(td, f, block))
break;
- idx = RAND_MAP_IDX(td, block);
- bit = RAND_MAP_BIT(td, block);
+ idx = RAND_MAP_IDX(td, f, block);
+ bit = RAND_MAP_BIT(td, f, block);
- assert(idx < td->num_maps);
+ assert(idx < f->num_maps);
- td->file_map[idx] |= (1UL << bit);
+ f->file_map[idx] |= (1UL << bit);
block++;
blocks++;
}
io_u->buflen = blocks * td->min_bs;
}
-static int get_next_offset(struct thread_data *td, unsigned long long *offset)
+/*
+ * For random io, generate a random new block and see if it's used. Repeat
+ * until we find a free one. For sequential io, just return the end of
+ * the last io issued.
+ */
+static int get_next_offset(struct thread_data *td, struct fio_file *f,
+ unsigned long long *offset)
{
unsigned long long b, rb;
long r;
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);
+ rb = b + (f->file_offset / td->min_bs);
loops--;
- } while (!random_map_free(td, rb) && loops);
+ } while (!random_map_free(td, f, rb) && loops);
if (!loops) {
- if (get_next_free_block(td, &b))
+ if (get_next_free_block(td, f, &b))
return 1;
}
} else
- b = td->last_pos / td->min_bs;
+ b = f->last_pos / td->min_bs;
- *offset = (b * td->min_bs) + td->file_offset;
- if (*offset > td->real_file_size)
+ *offset = (b * td->min_bs) + f->file_offset;
+ if (*offset > f->file_size)
return 1;
return 0;
buflen = (buflen + td->min_bs - 1) & ~(td->min_bs - 1);
}
- if (buflen > td->io_size - td->this_io_bytes[td->ddir])
+ if (buflen > td->io_size - td->this_io_bytes[td->ddir]) {
+ /*
+ * if using direct/raw io, we may not be able to
+ * shrink the size. so just fail it.
+ */
+ if (td->io_ops->flags & FIO_RAWIO)
+ return 0;
+
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 spent;
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;
}
}
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));
- 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));
-}
-
+/*
+ * Return the data direction for the next io_u. If the job is a
+ * mixed read/write workload, check the rwmix cycle and switch if
+ * necessary.
+ */
static int get_rw_ddir(struct thread_data *td)
{
if (td_rw(td)) {
* Check if it's time to seed a new data direction.
*/
if (elapsed >= td->rwmixcycle) {
- int v;
+ unsigned int v;
long r;
r = os_random_long(&td->rwmix_state);
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.
- */
-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))
+ if (td->io_ops->prep && td->io_ops->prep(td, io_u))
return 1;
return 0;
void put_io_u(struct thread_data *td, struct io_u *io_u)
{
+ io_u->file = NULL;
list_del(&io_u->list);
list_add(&io_u->list, &td->io_u_freelist);
td->cur_depth--;
}
-static int fill_io_u(struct thread_data *td, struct io_u *io_u)
+static int fill_io_u(struct thread_data *td, struct fio_file *f,
+ struct io_u *io_u)
{
/*
* If using an iolog, grab next piece if any available.
/*
* No log, let the seq/rand engine retrieve the next position.
*/
- if (!get_next_offset(td, &io_u->offset)) {
+ if (!get_next_offset(td, f, &io_u->offset)) {
io_u->buflen = get_next_buflen(td);
if (io_u->buflen) {
if (td->write_iolog)
write_iolog_put(td, io_u);
+ io_u->file = f;
return 0;
}
}
return io_u;
}
-static struct io_u *get_io_u(struct thread_data *td)
+/*
+ * Return an io_u to be processed. Gets a buflen and offset, sets direction,
+ * etc. The returned io_u is fully ready to be prepped and submitted.
+ */
+static struct io_u *get_io_u(struct thread_data *td, struct fio_file *f)
{
struct io_u *io_u;
if (td->zone_bytes >= td->zone_size) {
td->zone_bytes = 0;
- td->last_pos += td->zone_skip;
+ f->last_pos += td->zone_skip;
}
- if (fill_io_u(td, io_u)) {
+ if (fill_io_u(td, f, 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 + io_u->offset > f->file_size) {
+ if (td->io_ops->flags & FIO_RAWIO) {
+ put_io_u(td, io_u);
+ return NULL;
+ }
+
+ io_u->buflen = f->file_size - io_u->offset;
+ }
if (!io_u->buflen) {
put_io_u(td, io_u);
}
if (!td->read_iolog && !td->sequential)
- mark_random_map(td, io_u);
+ mark_random_map(td, f, io_u);
- td->last_pos += io_u->buflen;
+ f->last_pos += io_u->buflen;
if (td->verify != VERIFY_NONE)
- populate_io_u(td, io_u);
+ populate_verify_io_u(td, io_u);
if (td_io_prep(td, io_u)) {
put_io_u(td, io_u);
td->runstate = runstate;
}
-static int get_next_verify(struct thread_data *td, struct io_u *io_u)
+static struct fio_file *get_next_file(struct thread_data *td)
{
- struct io_piece *ipo;
+ unsigned int old_next_file = td->next_file;
+ struct fio_file *f;
- if (!list_empty(&td->io_hist_list)) {
- ipo = list_entry(td->io_hist_list.next, struct io_piece, list);
+ do {
+ f = &td->files[td->next_file];
- list_del(&ipo->list);
+ td->next_file++;
+ if (td->next_file >= td->nr_files)
+ td->next_file = 0;
- io_u->offset = ipo->offset;
- io_u->buflen = ipo->len;
- io_u->ddir = DDIR_READ;
- free(ipo);
- return 0;
- }
+ if (f->fd != -1)
+ break;
- return 1;
+ f = NULL;
+ } while (td->next_file != old_next_file);
+
+ return f;
}
-static int sync_td(struct thread_data *td)
+static int td_io_sync(struct thread_data *td, struct fio_file *f)
{
- if (td->io_sync)
- return td->io_sync(td);
+ if (td->io_ops->sync)
+ return td->io_ops->sync(td, f);
return 0;
}
-static int io_u_getevents(struct thread_data *td, int min, int max,
+static int td_io_getevents(struct thread_data *td, int min, int max,
struct timespec *t)
{
- return td->io_getevents(td, min, max, t);
+ return td->io_ops->getevents(td, min, max, t);
}
-static int io_u_queue(struct thread_data *td, struct io_u *io_u)
+static int td_io_queue(struct thread_data *td, struct io_u *io_u)
{
gettimeofday(&io_u->issue_time, NULL);
- return td->io_queue(td, io_u);
+ return td->io_ops->queue(td, io_u);
}
#define iocb_time(iocb) ((unsigned long) (iocb)->data)
icd->bytes_done[0] = icd->bytes_done[1] = 0;
for (i = 0; i < icd->nr; i++) {
- io_u = td->io_event(td, i);
+ io_u = td->io_ops->event(td, i);
io_completed(td, io_u, icd);
put_io_u(td, io_u);
}
}
+/*
+ * 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 timespec ts = { .tv_sec = 0, .tv_nsec = 0};
/*
* get immediately available events, if any
*/
- r = io_u_getevents(td, 0, td->cur_depth, &ts);
+ r = td_io_getevents(td, 0, td->cur_depth, &ts);
if (r > 0) {
icd.nr = r;
ios_completed(td, &icd);
/*
* now cancel remaining active events
*/
- if (td->io_cancel) {
+ if (td->io_ops->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);
+ r = td->io_ops->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);
+ r = td_io_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;
- }
-
- return ret;
-}
-
-static void do_verify(struct thread_data *td)
+/*
+ * The main verify engine. Runs over the writes we previusly submitted,
+ * reads the blocks back in, and checks the crc/md5 of the data.
+ */
+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;
+ struct fio_file *f;
+ int ret, i;
+
+ /*
+ * sync io first and invalidate cache, to make sure we really
+ * read from disk.
+ */
+ for_each_file(td, f, i) {
+ td_io_sync(td, f);
+ file_invalidate_cache(td, f);
+ }
td_set_runstate(td, TD_VERIFYING);
break;
}
+ f = get_next_file(td);
+ if (!f)
+ break;
+
+ io_u->file = f;
+
if (td_io_prep(td, io_u)) {
put_io_u(td, io_u);
break;
}
- ret = io_u_queue(td, io_u);
+ ret = td_io_queue(td, io_u);
if (ret) {
put_io_u(td, io_u);
td_verror(td, ret);
if (do_io_u_verify(td, &v_io_u))
break;
- ret = io_u_getevents(td, 1, 1, NULL);
+ ret = td_io_getevents(td, 1, 1, NULL);
if (ret != 1) {
if (ret < 0)
td_verror(td, ret);
break;
}
- v_io_u = td->io_event(td, 0);
+ v_io_u = td->io_ops->event(td, 0);
icd.nr = 1;
icd.error = 0;
io_completed(td, v_io_u, &icd);
}
/*
- * Main IO worker functions. It retrieves io_u's to process and queues
+ * Not really an io thread, all it does is burn CPU cycles in the specified
+ * manner.
+ */
+static void do_cpuio(struct thread_data *td)
+{
+ struct timeval e;
+ int split = 100 / td->cpuload;
+ int i = 0;
+
+ while (!td->terminate) {
+ gettimeofday(&e, NULL);
+
+ if (runtime_exceeded(td, &e))
+ break;
+
+ if (!(i % split))
+ __usec_sleep(10000);
+ else
+ usec_sleep(td, 10000);
+
+ i++;
+ }
+}
+
+/*
+ * 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;
unsigned long usec;
+ struct fio_file *f;
+ int i, 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;
+ int min_evts = 0;
struct io_u *io_u;
if (td->terminate)
break;
- io_u = get_io_u(td);
+ f = get_next_file(td);
+ if (!f)
+ break;
+
+ io_u = get_io_u(td, f);
if (!io_u)
break;
memcpy(&s, &io_u->start_time, sizeof(s));
- ret = io_u_queue(td, io_u);
+ ret = td_io_queue(td, io_u);
if (ret) {
put_io_u(td, io_u);
td_verror(td, ret);
min_evts = 1;
}
- ret = io_u_getevents(td, min_evts, td->cur_depth, timeout);
+
+ ret = td_io_getevents(td, min_evts, td->cur_depth, timeout);
if (ret < 0) {
- td_verror(td, ret);
+ td_verror(td, -ret);
break;
} else if (!ret)
continue;
rate_throttle(td, usec, icd.bytes_done[td->ddir]);
if (check_min_rate(td, &e)) {
+ if (rate_quit)
+ terminate_threads(td->groupid);
td_verror(td, ENOMEM);
break;
}
if (should_fsync(td) && td->fsync_blocks &&
(td->io_blocks[DDIR_WRITE] % td->fsync_blocks) == 0)
- sync_td(td);
+ td_io_sync(td, f);
}
- if (td->cur_depth)
- cleanup_pending_aio(td);
+ if (!ret) {
+ if (td->cur_depth)
+ cleanup_pending_aio(td);
- if (should_fsync(td) && td->end_fsync) {
- td_set_runstate(td, TD_FSYNCING);
- sync_td(td);
+ if (should_fsync(td) && td->end_fsync) {
+ td_set_runstate(td, TD_FSYNCING);
+ for_each_file(td, f, i)
+ td_io_sync(td, f);
+ }
}
}
-static void cleanup_io(struct thread_data *td)
+static int td_io_init(struct thread_data *td)
{
- if (td->io_cleanup)
- td->io_cleanup(td);
-}
+ if (td->io_ops->init)
+ return td->io_ops->init(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;
- }
+ return 0;
}
static void cleanup_io_u(struct thread_data *td)
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;
+ free_io_mem(td);
}
static int init_io_u(struct thread_data *td)
int i, max_units;
char *p;
- if (td->io_engine & FIO_SYNCIO)
+ if (td->io_ops->flags & FIO_CPUIO)
+ return 0;
+
+ if (td->io_ops->flags & 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;
- }
- }
+ if (allocate_io_mem(td))
+ return 1;
p = ALIGN(td->orig_buffer);
for (i = 0; i < max_units; i++) {
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)
- return 0;
-
- if (!size) {
- log_err("Need size for create\n");
- td_verror(td, EINVAL);
- return 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);
- return 1;
- }
-
- if (!extend && ftruncate(td->fd, td->file_size) == -1) {
- td_verror(td, errno);
- return 1;
- }
-
- td->io_size = td->file_size;
- b = malloc(td->max_bs);
- memset(b, 0, td->max_bs);
-
- left = size;
- while (left && !td->terminate) {
- bs = td->max_bs;
- if (bs > left)
- bs = left;
-
- r = write(td->fd, b, bs);
-
- if (r == (int) bs) {
- left -= bs;
- continue;
- } else {
- if (r < 0)
- td_verror(td, errno);
- else
- td_verror(td, EIO);
-
- break;
- }
- }
-
- if (td->terminate)
- unlink(td->file_name);
- else if (td->create_fsync)
- fsync(td->fd);
-
- close(td->fd);
- td->fd = -1;
- free(b);
- return 0;
-}
-
-static int file_size(struct thread_data *td)
-{
- struct stat st;
-
- 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 (td->verify != VERIFY_NONE)
- flags |= PROT_READ;
- } else
- flags = PROT_READ;
-
- 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->invalidate_cache) {
- if (madvise(td->mmap, td->file_size, MADV_DONTNEED) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
-
- 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;
- }
- }
-
- return 0;
-}
-
-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;
- }
- }
-
- if (td->sequential) {
- if (fadvise(td->fd, td->file_offset, td->file_size, POSIX_FADV_SEQUENTIAL) < 0) {
- td_verror(td, errno);
- return 1;
- }
- } else {
- if (fadvise(td->fd, td->file_offset, td->file_size, POSIX_FADV_RANDOM) < 0) {
- td_verror(td, errno);
- return 1;
- }
- }
-
- return 0;
-}
-
-static int setup_file(struct thread_data *td)
-{
- struct stat st;
- int flags = 0;
-
- 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;
- }
- }
-
- if (td->odirect)
- flags |= OS_O_DIRECT;
-
- if (td_write(td) || td_rw(td)) {
- if (td->filetype == FIO_TYPE_FILE) {
- if (!td->overwrite)
- flags |= O_TRUNC;
-
- flags |= O_CREAT;
- }
- if (td->sync_io)
- flags |= O_SYNC;
-
- flags |= O_RDWR;
-
- td->fd = open(td->file_name, flags, 0600);
- } else {
- if (td->filetype == FIO_TYPE_CHAR)
- flags |= O_RDWR;
- else
- flags |= O_RDONLY;
-
- td->fd = open(td->file_name, flags);
- }
-
- if (td->fd == -1) {
- td_verror(td, errno);
- return 1;
- }
-
- if (get_file_size(td))
- return 1;
-
- if (td->io_engine != FIO_MMAPIO)
- return setup_file_plain(td);
- else
- return setup_file_mmap(td);
-}
-
static int switch_ioscheduler(struct thread_data *td)
{
char tmp[256], tmp2[128];
static void clear_io_state(struct thread_data *td)
{
- if (td->io_engine == FIO_SYNCIO)
- lseek(td->fd, SEEK_SET, 0);
+ struct fio_file *f;
+ int i;
- td->last_pos = 0;
td->stat_io_bytes[0] = td->stat_io_bytes[1] = 0;
td->this_io_bytes[0] = td->this_io_bytes[1] = 0;
td->zone_bytes = 0;
- if (td->file_map)
- memset(td->file_map, 0, td->num_maps * sizeof(long));
+ for_each_file(td, f, i) {
+ f->last_pos = 0;
+ if (td->io_ops->flags & FIO_SYNCIO)
+ lseek(f->fd, SEEK_SET, 0);
+
+ if (f->file_map)
+ memset(f->file_map, 0, f->num_maps * sizeof(long));
+ }
}
+/*
+ * 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)
{
struct thread_data *td = data;
goto err;
}
- if (init_io(td))
+ if (td_io_init(td))
goto err;
if (init_iolog(td))
}
}
- if (nice(td->nice) < 0) {
+ if (nice(td->nice) == -1) {
td_verror(td, errno);
goto err;
}
fio_sem_up(&startup_sem);
fio_sem_down(&td->mutex);
- if (!td->create_serialize && setup_file(td))
+ if (!td->create_serialize && setup_files(td))
goto err;
gettimeofday(&td->epoch, NULL);
clear_io_state(td);
prune_io_piece_log(td);
- do_io(td);
+ if (td->io_ops->flags & FIO_CPUIO)
+ do_cpuio(td);
+ else
+ do_io(td);
td->runtime[td->ddir] += mtime_since_now(&td->start);
if (td_rw(td) && td->io_bytes[td->ddir ^ 1])
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);
+ close_files(td);
+ close_ioengine(td);
cleanup_io_u(td);
td_set_runstate(td, TD_EXITED);
return NULL;
}
+/*
+ * We cannot pass the td data into a forked process, so attach the td and
+ * pass it to the thread worker.
+ */
static void *fork_main(int shmid, int offset)
{
struct thread_data *td;
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);
-}
-
-static int thread_eta(struct thread_data *td, unsigned long elapsed)
-{
- unsigned long long bytes_total, bytes_done;
- unsigned int eta_sec = 0;
-
- bytes_total = td->total_io_size;
-
- /*
- * if writing, bytes_total will be twice the size. If mixing,
- * assume a 50/50 split and thus bytes_total will be 50% larger.
- */
- 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;
-
- /*
- * We can only guess - assume it'll run the full timeout
- * if given, otherwise assume it'll run at the specified rate.
- */
- 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 (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 {
- /*
- * thread is already done or waiting for fsync
- */
- 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;
-
- 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;
-
- 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];
- }
- }
-
- 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);
-}
-
+/*
+ * 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)
{
- int i;
+ struct thread_data *td;
+ int i, cputhreads;
/*
* reap exited threads (TD_EXITED -> TD_REAPED)
*/
- for (i = 0; i < thread_number; i++) {
- struct thread_data *td = &threads[i];
+ cputhreads = 0;
+ for_each_td(td, i) {
+ /*
+ * ->io_ops is NULL for a thread that has closed its
+ * io engine
+ */
+ if (td->io_ops && td->io_ops->flags & FIO_CPUIO)
+ cputhreads++;
if (td->runstate != TD_EXITED)
continue;
(*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);
- }
- }
- 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;
- }
-
- return ptr;
+ if (*nr_running == cputhreads)
+ 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;
- printf("Starting %d thread%s\n", thread_number, thread_number > 1 ? "s" : "");
- fflush(stdout);
+ if (!terse_output) {
+ printf("Starting %d thread%s\n", thread_number, thread_number > 1 ? "s" : "");
+ fflush(stdout);
+ }
signal(SIGINT, sig_handler);
signal(SIGALRM, sig_handler);
nr_started = 0;
m_rate = t_rate = 0;
- for (i = 0; i < thread_number; i++) {
- td = &threads[i];
-
- run_str[td->thread_number - 1] = 'P';
+ for_each_td(td, i) {
+ print_status_init(td->thread_number - 1);
init_disk_util(td);
* we don't want X number of threads getting their
* client data interspersed on disk
*/
- if (setup_file(td)) {
+ if (setup_files(td)) {
td_set_runstate(td, TD_REAPED);
todo--;
}
}
- gettimeofday(&genesis, NULL);
+ time_init();
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;
}
if (td->start_delay) {
- spent = mtime_since_now(&genesis);
+ spent = mtime_since_genesis();
if (td->start_delay * 1000 > spent)
continue;
/*
* 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;
}
update_io_ticks();
- fio_unpin_memory(mlocked_mem);
+ fio_unpin_memory();
}
int main(int argc, char *argv[])
projects / fio.git / blobdiff