#include <assert.h>
#include "fio.h"
-
-/*
- * Change this define to play with the timeout handling
- */
-#undef FIO_USE_TIMEOUT
+#include "hash.h"
struct io_completion_data {
int nr; /* input */
* 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)
+static int random_map_free(struct fio_file *f, const unsigned long long block)
{
- unsigned int idx = RAND_MAP_IDX(td, f, block);
- unsigned int bit = RAND_MAP_BIT(td, f, block);
+ unsigned int idx = RAND_MAP_IDX(f, block);
+ unsigned int bit = RAND_MAP_BIT(f, block);
- return (f->file_map[idx] & (1UL << bit)) == 0;
+ dprint(FD_RANDOM, "free: b=%llu, idx=%u, bit=%u\n", block, idx, bit);
+
+ return (f->file_map[idx] & (1 << bit)) == 0;
}
/*
unsigned int min_bs = td->o.rw_min_bs;
struct fio_file *f = io_u->file;
unsigned long long block;
- unsigned int blocks;
- unsigned int nr_blocks;
+ unsigned int blocks, nr_blocks;
- block = io_u->offset / (unsigned long long) min_bs;
- blocks = 0;
+ block = (io_u->offset - f->file_offset) / (unsigned long long) min_bs;
nr_blocks = (io_u->buflen + min_bs - 1) / min_bs;
+ blocks = 0;
- while (blocks < nr_blocks) {
+ while (nr_blocks) {
+ unsigned int this_blocks, mask;
unsigned int idx, bit;
/*
* If we have a mixed random workload, we may
* encounter blocks we already did IO to.
*/
- if (!td->o.ddir_nr && !random_map_free(td, f, block))
+ if ((td->o.ddir_nr == 1) && !random_map_free(f, block)) {
+ if (!blocks)
+ blocks = 1;
break;
+ }
- idx = RAND_MAP_IDX(td, f, block);
- bit = RAND_MAP_BIT(td, f, block);
+ idx = RAND_MAP_IDX(f, block);
+ bit = RAND_MAP_BIT(f, block);
fio_assert(td, idx < f->num_maps);
- f->file_map[idx] |= (1UL << bit);
- block++;
- blocks++;
+ this_blocks = nr_blocks;
+ if (this_blocks + bit > BLOCKS_PER_MAP)
+ this_blocks = BLOCKS_PER_MAP - bit;
+
+ if (this_blocks == BLOCKS_PER_MAP)
+ mask = -1U;
+ else
+ mask = ((1U << this_blocks) - 1) << bit;
+
+ f->file_map[idx] |= mask;
+ nr_blocks -= this_blocks;
+ blocks += this_blocks;
+ block += this_blocks;
}
if ((blocks * min_bs) < io_u->buflen)
io_u->buflen = blocks * min_bs;
}
+static unsigned long long last_block(struct thread_data *td, struct fio_file *f,
+ enum fio_ddir ddir)
+{
+ unsigned long long max_blocks;
+ unsigned long long max_size;
+
+ /*
+ * Hmm, should we make sure that ->io_size <= ->real_file_size?
+ */
+ max_size = f->io_size;
+ if (max_size > f->real_file_size)
+ max_size = f->real_file_size;
+
+ max_blocks = max_size / (unsigned long long) td->o.ba[ddir];
+ if (!max_blocks)
+ return 0;
+
+ return max_blocks;
+}
+
/*
* 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)
+ enum fio_ddir ddir, unsigned long long *b)
{
+ unsigned long long min_bs = td->o.rw_min_bs;
int i;
i = f->last_free_lookup;
*b = (i * BLOCKS_PER_MAP);
- while ((*b) * td->o.rw_min_bs < f->real_file_size) {
- if (f->file_map[i] != -1UL) {
- *b += fio_ffz(f->file_map[i]);
+ while ((*b) * min_bs < f->real_file_size &&
+ (*b) * min_bs < f->io_size) {
+ if (f->file_map[i] != (unsigned int) -1) {
+ *b += ffz(f->file_map[i]);
+ if (*b > last_block(td, f, ddir))
+ break;
f->last_free_lookup = i;
return 0;
}
i++;
}
+ dprint(FD_IO, "failed finding a free block\n");
return 1;
}
static int get_next_rand_offset(struct thread_data *td, struct fio_file *f,
- int ddir, unsigned long long *b)
+ enum fio_ddir ddir, unsigned long long *b)
{
- unsigned long long max_blocks = f->io_size / td->o.min_bs[ddir];
- unsigned long long r, rb;
+ unsigned long long r;
int loops = 5;
do {
r = os_random_long(&td->random_state);
- if (!max_blocks)
- *b = 0;
- else
- *b = ((max_blocks - 1) * r / (unsigned long long) (RAND_MAX+1.0));
- if (td->o.norandommap)
- break;
- rb = *b + (f->file_offset / td->o.min_bs[ddir]);
- loops--;
- } while (!random_map_free(td, f, rb) && loops);
+ dprint(FD_RANDOM, "off rand %llu\n", r);
+ *b = (last_block(td, f, ddir) - 1)
+ * (r / ((unsigned long long) OS_RAND_MAX + 1.0));
+
+ /*
+ * if we are not maintaining a random map, we are done.
+ */
+ if (!file_randommap(td, f))
+ return 0;
+
+ /*
+ * calculate map offset and check if it's free
+ */
+ if (random_map_free(f, *b))
+ return 0;
+
+ dprint(FD_RANDOM, "get_next_rand_offset: offset %llu busy\n",
+ *b);
+ } while (--loops);
/*
- * if we failed to retrieve a truly random offset within
- * the loops assigned, see if there are free ones left at all
+ * we get here, if we didn't suceed in looking up a block. generate
+ * a random start offset into the filemap, and find the first free
+ * block from there.
*/
- if (!loops && get_next_free_block(td, f, b))
- return 1;
+ loops = 10;
+ do {
+ f->last_free_lookup = (f->num_maps - 1) *
+ (r / (OS_RAND_MAX + 1.0));
+ if (!get_next_free_block(td, f, ddir, b))
+ return 0;
- return 0;
+ r = os_random_long(&td->random_state);
+ } while (--loops);
+
+ /*
+ * that didn't work either, try exhaustive search from the start
+ */
+ f->last_free_lookup = 0;
+ return get_next_free_block(td, f, ddir, b);
}
/*
static int get_next_offset(struct thread_data *td, struct io_u *io_u)
{
struct fio_file *f = io_u->file;
- const int ddir = io_u->ddir;
unsigned long long b;
+ enum fio_ddir ddir = io_u->ddir;
if (td_random(td) && (td->o.ddir_nr && !--td->ddir_nr)) {
td->ddir_nr = td->o.ddir_nr;
- if (get_next_rand_offset(td, f, ddir, &b))
+ if (get_next_rand_offset(td, f, ddir, &b)) {
+ dprint(FD_IO, "%s: getting rand offset failed\n",
+ f->file_name);
return 1;
+ }
} else {
- if (f->last_pos >= f->real_file_size)
- return 1;
+ if (f->last_pos >= f->real_file_size) {
+ if (!td_random(td) ||
+ get_next_rand_offset(td, f, ddir, &b)) {
+ dprint(FD_IO, "%s: pos %llu > size %llu\n",
+ f->file_name, f->last_pos,
+ f->real_file_size);
+ return 1;
+ }
+ } else
+ b = (f->last_pos - f->file_offset) / td->o.min_bs[ddir];
+ }
- b = f->last_pos / td->o.min_bs[ddir];
+ io_u->offset = b * td->o.ba[ddir];
+ if (io_u->offset >= f->io_size) {
+ dprint(FD_IO, "get_next_offset: offset %llu >= io_size %llu\n",
+ io_u->offset, f->io_size);
+ return 1;
}
- io_u->offset = (b * td->o.min_bs[ddir]) + f->file_offset;
- if (io_u->offset >= f->real_file_size)
+ io_u->offset += f->file_offset;
+ if (io_u->offset >= f->real_file_size) {
+ dprint(FD_IO, "get_next_offset: offset %llu >= size %llu\n",
+ io_u->offset, f->real_file_size);
return 1;
+ }
return 0;
}
+static inline int is_power_of_2(unsigned int val)
+{
+ return (val != 0 && ((val & (val - 1)) == 0));
+}
+
static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u)
{
const int ddir = io_u->ddir;
- unsigned int buflen;
+ unsigned int uninitialized_var(buflen);
+ unsigned int minbs, maxbs;
long r;
- if (td->o.min_bs[ddir] == td->o.max_bs[ddir])
- buflen = td->o.min_bs[ddir];
+ minbs = td->o.min_bs[ddir];
+ maxbs = td->o.max_bs[ddir];
+
+ if (minbs == maxbs)
+ buflen = minbs;
else {
r = os_random_long(&td->bsrange_state);
- buflen = (unsigned int) (1 + (double) (td->o.max_bs[ddir] - 1) * r / (RAND_MAX + 1.0));
- if (!td->o.bs_unaligned)
- buflen = (buflen + td->o.min_bs[ddir] - 1) & ~(td->o.min_bs[ddir] - 1);
+ if (!td->o.bssplit_nr[ddir]) {
+ buflen = 1 + (unsigned int) ((double) maxbs *
+ (r / (OS_RAND_MAX + 1.0)));
+ if (buflen < minbs)
+ buflen = minbs;
+ } else {
+ long perc = 0;
+ unsigned int i;
+
+ for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
+ struct bssplit *bsp = &td->o.bssplit[ddir][i];
+
+ buflen = bsp->bs;
+ perc += bsp->perc;
+ if (r <= ((OS_RAND_MAX / 100L) * perc))
+ break;
+ }
+ }
+ if (!td->o.bs_unaligned && is_power_of_2(minbs))
+ buflen = (buflen + minbs - 1) & ~(minbs - 1);
+ }
+
+ if (io_u->offset + buflen > io_u->file->real_file_size) {
+ dprint(FD_IO, "lower buflen %u -> %u (ddir=%d)\n", buflen,
+ minbs, ddir);
+ buflen = minbs;
}
return buflen;
static void set_rwmix_bytes(struct thread_data *td)
{
- unsigned long long rbytes;
unsigned int diff;
/*
* buffered writes may issue a lot quicker than they complete,
* whereas reads do not.
*/
- rbytes = td->io_bytes[td->rwmix_ddir] - td->rwmix_bytes;
diff = td->o.rwmix[td->rwmix_ddir ^ 1];
-
- td->rwmix_bytes = td->io_bytes[td->rwmix_ddir] + (rbytes * ((100 - diff)) / diff);
+ td->rwmix_issues = (td->io_issues[td->rwmix_ddir] * diff) / 100;
}
static inline enum fio_ddir get_rand_ddir(struct thread_data *td)
long r;
r = os_random_long(&td->rwmix_state);
- v = 1 + (int) (100.0 * (r / (RAND_MAX + 1.0)));
- if (v < td->o.rwmix[DDIR_READ])
+ v = 1 + (int) (100.0 * (r / (OS_RAND_MAX + 1.0)));
+ if (v <= td->o.rwmix[DDIR_READ])
return DDIR_READ;
return DDIR_WRITE;
static enum fio_ddir get_rw_ddir(struct thread_data *td)
{
if (td_rw(td)) {
- struct timeval now;
- unsigned long elapsed;
- unsigned int cycle;
-
- fio_gettime(&now, NULL);
- elapsed = mtime_since_now(&td->rwmix_switch);
-
- /*
- * if this is the first cycle, make it shorter
- */
- cycle = td->o.rwmixcycle;
- if (!td->rwmix_bytes)
- cycle /= 10;
-
/*
* Check if it's time to seed a new data direction.
*/
- if (elapsed >= cycle ||
- td->io_bytes[td->rwmix_ddir] >= td->rwmix_bytes) {
+ if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) {
unsigned long long max_bytes;
- enum fio_ddir ddir;
+ enum fio_ddir ddir;
/*
* Put a top limit on how many bytes we do for
*/
ddir = get_rand_ddir(td);
max_bytes = td->this_io_bytes[ddir];
- if (max_bytes >= (td->o.size * td->o.rwmix[ddir] / 100)) {
+ if (max_bytes >=
+ (td->o.size * td->o.rwmix[ddir] / 100)) {
if (!td->rw_end_set[ddir]) {
td->rw_end_set[ddir] = 1;
- memcpy(&td->rw_end[ddir], &now, sizeof(now));
+ fio_gettime(&td->rw_end[ddir], NULL);
}
+
ddir ^= 1;
}
set_rwmix_bytes(td);
td->rwmix_ddir = ddir;
- memcpy(&td->rwmix_switch, &now, sizeof(now));
}
return td->rwmix_ddir;
} else if (td_read(td))
return DDIR_WRITE;
}
+static void put_file_log(struct thread_data *td, struct fio_file *f)
+{
+ int ret = put_file(td, f);
+
+ if (ret)
+ td_verror(td, ret, "file close");
+}
+
void put_io_u(struct thread_data *td, struct io_u *io_u)
{
assert((io_u->flags & IO_U_F_FREE) == 0);
io_u->flags |= IO_U_F_FREE;
if (io_u->file)
- put_file(td, io_u->file);
+ put_file_log(td, io_u->file);
io_u->file = NULL;
- list_del(&io_u->list);
- list_add(&io_u->list, &td->io_u_freelist);
+ flist_del(&io_u->list);
+ flist_add(&io_u->list, &td->io_u_freelist);
td->cur_depth--;
}
{
struct io_u *__io_u = *io_u;
+ dprint(FD_IO, "requeue %p\n", __io_u);
+
__io_u->flags |= IO_U_F_FREE;
+ if ((__io_u->flags & IO_U_F_FLIGHT) && (__io_u->ddir != DDIR_SYNC))
+ td->io_issues[__io_u->ddir]--;
+
__io_u->flags &= ~IO_U_F_FLIGHT;
- list_del(&__io_u->list);
- list_add_tail(&__io_u->list, &td->io_u_requeues);
+ flist_del(&__io_u->list);
+ flist_add_tail(&__io_u->list, &td->io_u_requeues);
td->cur_depth--;
*io_u = NULL;
}
static int fill_io_u(struct thread_data *td, struct io_u *io_u)
{
- /*
- * If using an iolog, grab next piece if any available.
- */
- if (td->o.read_iolog_file)
- return read_iolog_get(td, io_u);
+ if (td->io_ops->flags & FIO_NOIO)
+ goto out;
/*
* see if it's time to sync
io_u->ddir = get_rw_ddir(td);
+ /*
+ * See if it's time to switch to a new zone
+ */
+ if (td->zone_bytes >= td->o.zone_size) {
+ td->zone_bytes = 0;
+ io_u->file->last_pos += td->o.zone_skip;
+ td->io_skip_bytes += td->o.zone_skip;
+ }
+
/*
* No log, let the seq/rand engine retrieve the next buflen and
* position.
*/
- if (get_next_offset(td, io_u))
+ if (get_next_offset(td, io_u)) {
+ dprint(FD_IO, "io_u %p, failed getting offset\n", io_u);
return 1;
+ }
io_u->buflen = get_next_buflen(td, io_u);
- if (!io_u->buflen)
+ if (!io_u->buflen) {
+ dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u);
+ return 1;
+ }
+
+ if (io_u->offset + io_u->buflen > io_u->file->real_file_size) {
+ dprint(FD_IO, "io_u %p, offset too large\n", io_u);
+ dprint(FD_IO, " off=%llu/%lu > %llu\n", io_u->offset,
+ io_u->buflen, io_u->file->real_file_size);
return 1;
+ }
/*
* mark entry before potentially trimming io_u
*/
- if (td_random(td) && !td->o.norandommap)
+ if (td_random(td) && file_randommap(td, io_u->file))
mark_random_map(td, io_u);
/*
* If using a write iolog, store this entry.
*/
out:
- if (td->o.write_iolog_file)
- write_iolog_put(td, io_u);
-
+ dprint_io_u(io_u, "fill_io_u");
+ td->zone_bytes += io_u->buflen;
+ log_io_u(td, io_u);
return 0;
}
-void io_u_mark_depth(struct thread_data *td, struct io_u *io_u)
+static void __io_u_mark_map(unsigned int *map, unsigned int nr)
{
int index = 0;
- if (io_u->ddir == DDIR_SYNC)
- return;
+ switch (nr) {
+ default:
+ index = 6;
+ break;
+ case 33 ... 64:
+ index = 5;
+ break;
+ case 17 ... 32:
+ index = 4;
+ break;
+ case 9 ... 16:
+ index = 3;
+ break;
+ case 5 ... 8:
+ index = 2;
+ break;
+ case 1 ... 4:
+ index = 1;
+ case 0:
+ break;
+ }
+
+ map[index]++;
+}
+
+void io_u_mark_submit(struct thread_data *td, unsigned int nr)
+{
+ __io_u_mark_map(td->ts.io_u_submit, nr);
+ td->ts.total_submit++;
+}
+
+void io_u_mark_complete(struct thread_data *td, unsigned int nr)
+{
+ __io_u_mark_map(td->ts.io_u_complete, nr);
+ td->ts.total_complete++;
+}
+
+void io_u_mark_depth(struct thread_data *td, unsigned int nr)
+{
+ int index = 0;
switch (td->cur_depth) {
default:
- index++;
+ index = 6;
+ break;
case 32 ... 63:
- index++;
+ index = 5;
+ break;
case 16 ... 31:
- index++;
+ index = 4;
+ break;
case 8 ... 15:
- index++;
+ index = 3;
+ break;
case 4 ... 7:
- index++;
+ index = 2;
+ break;
case 2 ... 3:
- index++;
+ index = 1;
case 1:
break;
}
- td->ts.io_u_map[index]++;
- td->ts.total_io_u[io_u->ddir]++;
+ td->ts.io_u_map[index] += nr;
}
-static void io_u_mark_latency(struct thread_data *td, unsigned long msec)
+static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec)
+{
+ int index = 0;
+
+ assert(usec < 1000);
+
+ switch (usec) {
+ case 750 ... 999:
+ index = 9;
+ break;
+ case 500 ... 749:
+ index = 8;
+ break;
+ case 250 ... 499:
+ index = 7;
+ break;
+ case 100 ... 249:
+ index = 6;
+ break;
+ case 50 ... 99:
+ index = 5;
+ break;
+ case 20 ... 49:
+ index = 4;
+ break;
+ case 10 ... 19:
+ index = 3;
+ break;
+ case 4 ... 9:
+ index = 2;
+ break;
+ case 2 ... 3:
+ index = 1;
+ case 0 ... 1:
+ break;
+ }
+
+ assert(index < FIO_IO_U_LAT_U_NR);
+ td->ts.io_u_lat_u[index]++;
+}
+
+static void io_u_mark_lat_msec(struct thread_data *td, unsigned long msec)
{
int index = 0;
switch (msec) {
default:
- index++;
+ index = 11;
+ break;
case 1000 ... 1999:
- index++;
+ index = 10;
+ break;
case 750 ... 999:
- index++;
+ index = 9;
+ break;
case 500 ... 749:
- index++;
+ index = 8;
+ break;
case 250 ... 499:
- index++;
+ index = 7;
+ break;
case 100 ... 249:
- index++;
+ index = 6;
+ break;
case 50 ... 99:
- index++;
+ index = 5;
+ break;
case 20 ... 49:
- index++;
+ index = 4;
+ break;
case 10 ... 19:
- index++;
+ index = 3;
+ break;
case 4 ... 9:
- index++;
+ index = 2;
+ break;
case 2 ... 3:
- index++;
+ index = 1;
case 0 ... 1:
break;
}
- td->ts.io_u_lat[index]++;
+ assert(index < FIO_IO_U_LAT_M_NR);
+ td->ts.io_u_lat_m[index]++;
+}
+
+static void io_u_mark_latency(struct thread_data *td, unsigned long usec)
+{
+ if (usec < 1000)
+ io_u_mark_lat_usec(td, usec);
+ else
+ io_u_mark_lat_msec(td, usec / 1000);
}
/*
do {
long r = os_random_long(&td->next_file_state);
+ int opened = 0;
- fno = (unsigned int) ((double) td->o.nr_files * (r / (RAND_MAX + 1.0)));
- f = &td->files[fno];
+ fno = (unsigned int) ((double) td->o.nr_files
+ * (r / (OS_RAND_MAX + 1.0)));
+ f = td->files[fno];
if (f->flags & FIO_FILE_DONE)
continue;
- if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
+ if (!(f->flags & FIO_FILE_OPEN)) {
+ int err;
+
+ err = td_io_open_file(td, f);
+ if (err)
+ continue;
+ opened = 1;
+ }
+
+ if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) {
+ dprint(FD_FILE, "get_next_file_rand: %p\n", f);
return f;
+ }
+ if (opened)
+ td_io_close_file(td, f);
} while (1);
}
struct fio_file *f;
do {
- f = &td->files[td->next_file];
+ int opened = 0;
+
+ f = td->files[td->next_file];
td->next_file++;
if (td->next_file >= td->o.nr_files)
td->next_file = 0;
+ dprint(FD_FILE, "trying file %s %x\n", f->file_name, f->flags);
if (f->flags & FIO_FILE_DONE) {
f = NULL;
continue;
}
+ if (!(f->flags & FIO_FILE_OPEN)) {
+ int err;
+
+ err = td_io_open_file(td, f);
+ if (err) {
+ dprint(FD_FILE, "error %d on open of %s\n",
+ err, f->file_name);
+ continue;
+ }
+ opened = 1;
+ }
+
+ dprint(FD_FILE, "goodf=%x, badf=%x, ff=%x\n", goodf, badf, f->flags);
if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
break;
+ if (opened)
+ td_io_close_file(td, f);
+
f = NULL;
} while (td->next_file != old_next_file);
+ dprint(FD_FILE, "get_next_file_rr: %p\n", f);
return f;
}
assert(td->o.nr_files <= td->files_index);
- if (!td->nr_open_files || td->nr_done_files >= td->o.nr_files)
+ if (td->nr_done_files >= td->o.nr_files) {
+ dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d,"
+ " nr_files=%d\n", td->nr_open_files,
+ td->nr_done_files,
+ td->o.nr_files);
return NULL;
+ }
f = td->file_service_file;
- if (f && (f->flags & FIO_FILE_OPEN) && td->file_service_left--)
- return f;
+ if (f && (f->flags & FIO_FILE_OPEN) && !(f->flags & FIO_FILE_CLOSING)) {
+ if (td->o.file_service_type == FIO_FSERVICE_SEQ)
+ goto out;
+ if (td->file_service_left--)
+ goto out;
+ }
- if (td->o.file_service_type == FIO_FSERVICE_RR)
+ if (td->o.file_service_type == FIO_FSERVICE_RR ||
+ td->o.file_service_type == FIO_FSERVICE_SEQ)
f = get_next_file_rr(td, FIO_FILE_OPEN, FIO_FILE_CLOSING);
else
f = get_next_file_rand(td, FIO_FILE_OPEN, FIO_FILE_CLOSING);
td->file_service_file = f;
td->file_service_left = td->file_service_nr - 1;
+out:
+ dprint(FD_FILE, "get_next_file: %p [%s]\n", f, f->file_name);
return f;
}
-static struct fio_file *find_next_new_file(struct thread_data *td)
+static int set_io_u_file(struct thread_data *td, struct io_u *io_u)
{
struct fio_file *f;
- if (!td->nr_open_files || td->nr_done_files >= td->o.nr_files)
- return NULL;
+ do {
+ f = get_next_file(td);
+ if (!f)
+ return 1;
- if (td->o.file_service_type == FIO_FSERVICE_RR)
- f = get_next_file_rr(td, 0, FIO_FILE_OPEN);
- else
- f = get_next_file_rand(td, 0, FIO_FILE_OPEN);
+ io_u->file = f;
+ get_file(f);
- return f;
+ if (!fill_io_u(td, io_u))
+ break;
+
+ put_file_log(td, f);
+ td_io_close_file(td, f);
+ io_u->file = NULL;
+ f->flags |= FIO_FILE_DONE;
+ td->nr_done_files++;
+ dprint(FD_FILE, "%s: is done (%d of %d)\n", f->file_name, td->nr_done_files, td->o.nr_files);
+ } while (1);
+
+ return 0;
}
+
struct io_u *__get_io_u(struct thread_data *td)
{
struct io_u *io_u = NULL;
- if (!list_empty(&td->io_u_requeues))
- io_u = list_entry(td->io_u_requeues.next, struct io_u, list);
+ if (!flist_empty(&td->io_u_requeues))
+ io_u = flist_entry(td->io_u_requeues.next, struct io_u, list);
else if (!queue_full(td)) {
- io_u = list_entry(td->io_u_freelist.next, struct io_u, list);
+ io_u = flist_entry(td->io_u_freelist.next, struct io_u, list);
io_u->buflen = 0;
io_u->resid = 0;
io_u->flags &= ~IO_U_F_FREE;
io_u->error = 0;
- list_del(&io_u->list);
- list_add(&io_u->list, &td->io_u_busylist);
+ flist_del(&io_u->list);
+ flist_add(&io_u->list, &td->io_u_busylist);
td->cur_depth++;
}
{
struct fio_file *f;
struct io_u *io_u;
- int ret;
io_u = __get_io_u(td);
- if (!io_u)
+ if (!io_u) {
+ dprint(FD_IO, "__get_io_u failed\n");
return NULL;
+ }
/*
* from a requeue, io_u already setup
if (io_u->file)
goto out;
- do {
- f = get_next_file(td);
- if (!f) {
- put_io_u(td, io_u);
- return NULL;
- }
-
-set_file:
- io_u->file = f;
- get_file(f);
-
- if (!fill_io_u(td, io_u))
- break;
-
- /*
- * td_io_close() does a put_file() as well, so no need to
- * do that here.
- */
- io_u->file = NULL;
- td_io_close_file(td, f);
- f->flags |= FIO_FILE_DONE;
- td->nr_done_files++;
-
- /*
- * probably not the right place to do this, but see
- * if we need to open a new file
- */
- if (td->nr_open_files < td->o.open_files &&
- td->o.open_files != td->o.nr_files) {
- f = find_next_new_file(td);
-
- if (!f || (ret = td_io_open_file(td, f))) {
- put_io_u(td, io_u);
- return NULL;
- }
- goto set_file;
- }
- } while (1);
-
- if (td->zone_bytes >= td->o.zone_size) {
- td->zone_bytes = 0;
- f->last_pos += td->o.zone_skip;
+ /*
+ * If using an iolog, grab next piece if any available.
+ */
+ if (td->o.read_iolog_file) {
+ if (read_iolog_get(td, io_u))
+ goto err_put;
+ } else if (set_io_u_file(td, io_u)) {
+ dprint(FD_IO, "io_u %p, setting file failed\n", io_u);
+ goto err_put;
}
+ f = io_u->file;
+ assert(f->flags & FIO_FILE_OPEN);
+
if (io_u->ddir != DDIR_SYNC) {
- if (!io_u->buflen) {
- put_io_u(td, io_u);
- return NULL;
+ if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) {
+ dprint(FD_IO, "get_io_u: zero buflen on %p\n", io_u);
+ goto err_put;
}
f->last_pos = io_u->offset + io_u->buflen;
- if (td->o.verify != VERIFY_NONE)
+ if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_WRITE)
populate_verify_io_u(td, io_u);
+ else if (td->o.refill_buffers && io_u->ddir == DDIR_WRITE)
+ io_u_fill_buffer(td, io_u, io_u->xfer_buflen);
}
/*
* Set io data pointers.
*/
io_u->endpos = io_u->offset + io_u->buflen;
-out:
io_u->xfer_buf = io_u->buf;
io_u->xfer_buflen = io_u->buflen;
- if (td_io_prep(td, io_u)) {
- put_io_u(td, io_u);
- return NULL;
+out:
+ if (!td_io_prep(td, io_u)) {
+ if (!td->o.disable_slat)
+ fio_gettime(&io_u->start_time, NULL);
+ return io_u;
}
-
- fio_gettime(&io_u->start_time, NULL);
- return io_u;
+err_put:
+ dprint(FD_IO, "get_io_u failed\n");
+ put_io_u(td, io_u);
+ return NULL;
}
void io_u_log_error(struct thread_data *td, struct io_u *io_u)
log_err(": %s\n", strerror(io_u->error));
- log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir], io_u->offset, io_u->xfer_buflen);
+ log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir],
+ io_u->offset, io_u->xfer_buflen);
if (!td->error)
td_verror(td, io_u->error, "io_u error");
static void io_completed(struct thread_data *td, struct io_u *io_u,
struct io_completion_data *icd)
{
- unsigned long msec;
+ /*
+ * Older gcc's are too dumb to realize that usec is always used
+ * initialized, silence that warning.
+ */
+ unsigned long uninitialized_var(usec);
+
+ dprint_io_u(io_u, "io complete");
assert(io_u->flags & IO_U_F_FLIGHT);
io_u->flags &= ~IO_U_F_FLIGHT;
td->io_blocks[idx]++;
td->io_bytes[idx] += bytes;
- td->zone_bytes += bytes;
td->this_io_bytes[idx] += bytes;
- io_u->file->last_completed_pos = io_u->endpos;
-
- msec = mtime_since(&io_u->issue_time, &icd->time);
+ if (ramp_time_over(td)) {
+ if (!td->o.disable_clat || !td->o.disable_bw)
+ usec = utime_since(&io_u->issue_time,
+ &icd->time);
- add_clat_sample(td, idx, msec);
- add_bw_sample(td, idx, &icd->time);
- io_u_mark_latency(td, msec);
+ if (!td->o.disable_clat) {
+ add_clat_sample(td, idx, usec);
+ io_u_mark_latency(td, usec);
+ }
+ if (!td->o.disable_bw)
+ add_bw_sample(td, idx, &icd->time);
+ }
if (td_write(td) && idx == DDIR_WRITE &&
+ td->o.do_verify &&
td->o.verify != VERIFY_NONE)
log_io_piece(td, io_u);
}
}
-static void init_icd(struct io_completion_data *icd, int nr)
+static void init_icd(struct thread_data *td, struct io_completion_data *icd,
+ int nr)
{
- fio_gettime(&icd->time, NULL);
+ if (!td->o.disable_clat || !td->o.disable_bw)
+ fio_gettime(&icd->time, NULL);
icd->nr = nr;
{
struct io_completion_data icd;
- init_icd(&icd, 1);
+ init_icd(td, &icd, 1);
io_completed(td, io_u, &icd);
put_io_u(td, io_u);
/*
* Called to complete min_events number of io for the async engines.
*/
-long io_u_queued_complete(struct thread_data *td, int min_events)
+long io_u_queued_complete(struct thread_data *td, int min_evts)
{
struct io_completion_data icd;
struct timespec *tvp = NULL;
int ret;
struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, };
- if (!min_events)
+ dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts);
+
+ if (!min_evts)
tvp = &ts;
- ret = td_io_getevents(td, min_events, td->cur_depth, tvp);
+ ret = td_io_getevents(td, min_evts, td->o.iodepth_batch_complete, tvp);
if (ret < 0) {
td_verror(td, -ret, "td_io_getevents");
return ret;
} else if (!ret)
return ret;
- init_icd(&icd, ret);
+ init_icd(td, &icd, ret);
ios_completed(td, &icd);
if (!icd.error)
return icd.bytes_done[0] + icd.bytes_done[1];
*/
void io_u_queued(struct thread_data *td, struct io_u *io_u)
{
- unsigned long slat_time;
-
- slat_time = mtime_since(&io_u->start_time, &io_u->issue_time);
- add_slat_sample(td, io_u->ddir, slat_time);
-}
-
-#ifdef FIO_USE_TIMEOUT
-void io_u_set_timeout(struct thread_data *td)
-{
- assert(td->cur_depth);
-
- td->timer.it_interval.tv_sec = 0;
- td->timer.it_interval.tv_usec = 0;
- td->timer.it_value.tv_sec = IO_U_TIMEOUT + IO_U_TIMEOUT_INC;
- td->timer.it_value.tv_usec = 0;
- setitimer(ITIMER_REAL, &td->timer, NULL);
- fio_gettime(&td->timeout_end, NULL);
-}
-
-static void io_u_dump(struct io_u *io_u)
-{
- unsigned long t_start = mtime_since_now(&io_u->start_time);
- unsigned long t_issue = mtime_since_now(&io_u->issue_time);
+ if (!td->o.disable_slat) {
+ unsigned long slat_time;
- log_err("io_u=%p, t_start=%lu, t_issue=%lu\n", io_u, t_start, t_issue);
- log_err(" buf=%p/%p, len=%lu/%lu, offset=%llu\n", io_u->buf, io_u->xfer_buf, io_u->buflen, io_u->xfer_buflen, io_u->offset);
- log_err(" ddir=%d, fname=%s\n", io_u->ddir, io_u->file->file_name);
-}
-#else
-void io_u_set_timeout(struct thread_data fio_unused *td)
-{
+ slat_time = utime_since(&io_u->start_time, &io_u->issue_time);
+ add_slat_sample(td, io_u->ddir, slat_time);
+ }
}
-#endif
-#ifdef FIO_USE_TIMEOUT
-static void io_u_timeout_handler(int fio_unused sig)
+/*
+ * "randomly" fill the buffer contents
+ */
+void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u,
+ unsigned int max_bs)
{
- struct thread_data *td, *__td;
- pid_t pid = getpid();
- struct list_head *entry;
- struct io_u *io_u;
- int i;
+ long *ptr = io_u->buf;
- log_err("fio: io_u timeout\n");
-
- /*
- * TLS would be nice...
- */
- td = NULL;
- for_each_td(__td, i) {
- if (__td->pid == pid) {
- td = __td;
- break;
+ if (!td->o.zero_buffers) {
+ while ((void *) ptr - io_u->buf < max_bs) {
+ *ptr = rand() * GOLDEN_RATIO_PRIME;
+ ptr++;
}
- }
-
- if (!td) {
- log_err("fio: io_u timeout, can't find job\n");
- exit(1);
- }
-
- if (!td->cur_depth) {
- log_err("fio: timeout without pending work?\n");
- return;
- }
-
- log_err("fio: io_u timeout: job=%s, pid=%d\n", td->o.name, td->pid);
-
- list_for_each(entry, &td->io_u_busylist) {
- io_u = list_entry(entry, struct io_u, list);
-
- io_u_dump(io_u);
- }
-
- td_verror(td, ETIMEDOUT, "io_u timeout");
- exit(1);
-}
-#endif
-
-void io_u_init_timeout(void)
-{
-#ifdef FIO_USE_TIMEOUT
- signal(SIGALRM, io_u_timeout_handler);
-#endif
+ } else
+ memset(ptr, 0, max_bs);
}
projects / fio.git / blobdiff