#include <assert.h>
#include "fio.h"
-#include "os.h"
/*
* Change this define to play with the timeout handling
unsigned int blocks;
unsigned int nr_blocks;
- block = io_u->offset / (unsigned long long) min_bs;
+ block = (io_u->offset - f->file_offset) / (unsigned long long) min_bs;
blocks = 0;
nr_blocks = (io_u->buflen + min_bs - 1) / min_bs;
while (blocks < nr_blocks) {
unsigned int idx, bit;
- if (!random_map_free(td, f, block))
+ /*
+ * If we have a mixed random workload, we may
+ * encounter blocks we already did IO to.
+ */
+ if (!td->o.ddir_nr == 1 && !random_map_free(td, f, block))
break;
idx = RAND_MAP_IDX(td, f, block);
io_u->buflen = blocks * min_bs;
}
+static inline unsigned long long last_block(struct thread_data *td,
+ struct fio_file *f,
+ enum fio_ddir ddir)
+{
+ unsigned long long max_blocks;
+
+ max_blocks = f->io_size / td->o.min_bs[ddir];
+ if (!max_blocks)
+ return 0;
+
+ return max_blocks - 1;
+}
+
/*
* 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)
{
int i;
*b = (i * BLOCKS_PER_MAP);
while ((*b) * td->o.rw_min_bs < f->real_file_size) {
if (f->file_map[i] != -1UL) {
- *b += ffz(f->file_map[i]);
+ *b += fio_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,
+ enum fio_ddir ddir, unsigned long long *b)
+{
+ unsigned long long r, rb;
+ int loops = 5;
+
+ do {
+ r = os_random_long(&td->random_state);
+ *b = last_block(td, f, ddir);
+
+ /*
+ * if we are not maintaining a random map, we are done.
+ */
+ if (td->o.norandommap)
+ return 0;
+
+ /*
+ * calculate map offset and chec if it's free
+ */
+ rb = *b;
+ if (random_map_free(td, f, rb))
+ return 0;
+
+ } while (--loops);
+
+ /*
+ * 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.
+ */
+ loops = 10;
+ do {
+ f->last_free_lookup = (f->num_maps - 1) * (r / (RAND_MAX+1.0));
+ if (!get_next_free_block(td, f, ddir, b))
+ 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);
+}
+
/*
* 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
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, rb;
- long r;
+ unsigned long long b;
+ enum fio_ddir ddir = io_u->ddir;
- if (td_random(td)) {
- unsigned long long max_blocks = f->file_size / td->o.min_bs[ddir];
- 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);
+ if (td_random(td) && (td->o.ddir_nr && !--td->ddir_nr)) {
+ td->ddir_nr = td->o.ddir_nr;
- /*
- * if we failed to retrieve a truly random offset within
- * the loops assigned, see if there are free ones left at all
- */
- if (!loops && get_next_free_block(td, f, &b))
+ if (get_next_rand_offset(td, f, ddir, &b))
return 1;
- } else
- b = f->last_pos / td->o.min_bs[ddir];
+ } else {
+ if (f->last_pos >= f->real_file_size) {
+ if (!td_random(td) ||
+ get_next_rand_offset(td, f, ddir, &b))
+ return 1;
+ } else
+ b = (f->last_pos - f->file_offset) / td->o.min_bs[ddir];
+ }
io_u->offset = (b * td->o.min_bs[ddir]) + f->file_offset;
- if (io_u->offset >= f->real_file_size)
+ 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 unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u)
{
- struct fio_file *f = io_u->file;
const int ddir = io_u->ddir;
unsigned int buflen;
long r;
buflen = td->o.min_bs[ddir];
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.bssplit_nr)
+ buflen = (unsigned int) (1 + (double) (td->o.max_bs[ddir] - 1) * r / (RAND_MAX + 1.0));
+ else {
+ long perc = 0;
+ unsigned int i;
+
+ for (i = 0; i < td->o.bssplit_nr; i++) {
+ struct bssplit *bsp = &td->o.bssplit[i];
+
+ buflen = bsp->bs;
+ perc += bsp->perc;
+ if (r <= ((LONG_MAX / 100L) * perc))
+ break;
+ }
+ }
if (!td->o.bs_unaligned)
buflen = (buflen + td->o.min_bs[ddir] - 1) & ~(td->o.min_bs[ddir] - 1);
}
- while (buflen + io_u->offset > f->real_file_size) {
- if (buflen == td->o.min_bs[ddir]) {
- if (!td->o.odirect) {
- assert(io_u->offset <= f->real_file_size);
- buflen = f->real_file_size - io_u->offset;
- return buflen;
- }
- return 0;
- }
-
+ if (io_u->offset + buflen > io_u->file->real_file_size) {
+ dprint(FD_IO, "lower buflen %u -> %u (ddir=%d)\n", buflen,
+ td->o.min_bs[ddir], ddir);
buflen = td->o.min_bs[ddir];
}
return buflen;
}
+static void set_rwmix_bytes(struct thread_data *td)
+{
+ unsigned long long rbytes;
+ unsigned int diff;
+
+ /*
+ * we do time or byte based switch. this is needed because
+ * 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);
+}
+
+static inline enum fio_ddir get_rand_ddir(struct thread_data *td)
+{
+ unsigned int v;
+ 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])
+ return DDIR_READ;
+
+ return DDIR_WRITE;
+}
+
/*
* 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
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 >= td->o.rwmixcycle) {
- unsigned int v;
- long r;
-
- r = os_random_long(&td->rwmix_state);
- v = 1 + (int) (100.0 * (r / (RAND_MAX + 1.0)));
- if (v < td->o.rwmixread)
- td->rwmix_ddir = DDIR_READ;
- else
- td->rwmix_ddir = DDIR_WRITE;
+ if (elapsed >= cycle ||
+ td->io_bytes[td->rwmix_ddir] >= td->rwmix_bytes) {
+ unsigned long long max_bytes;
+ enum fio_ddir ddir;
+
+ /*
+ * Put a top limit on how many bytes we do for
+ * one data direction, to avoid overflowing the
+ * ranges too much
+ */
+ ddir = get_rand_ddir(td);
+ max_bytes = td->this_io_bytes[ddir];
+ 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));
+ }
+ ddir ^= 1;
+ }
+
+ if (ddir != td->rwmix_ddir)
+ set_rwmix_bytes(td);
+
+ td->rwmix_ddir = ddir;
memcpy(&td->rwmix_switch, &now, sizeof(now));
}
return td->rwmix_ddir;
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);
+
io_u->file = NULL;
list_del(&io_u->list);
list_add(&io_u->list, &td->io_u_freelist);
struct io_u *__io_u = *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);
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)
- return read_iolog_get(td, io_u);
+ if (td->io_ops->flags & FIO_NOIO)
+ goto out;
/*
* see if it's time to sync
!(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) &&
td->io_issues[DDIR_WRITE] && should_fsync(td)) {
io_u->ddir = DDIR_SYNC;
- return 0;
+ goto out;
}
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->o.read_iolog && td_random(td) && !td->o.norandommap)
+ if (td_random(td) && !td->o.norandommap)
mark_random_map(td, io_u);
/*
* If using a write iolog, store this entry.
*/
- if (td->o.write_iolog_file)
- write_iolog_put(td, io_u);
-
+out:
+ dprint_io_u(io_u, "fill_io_u");
+ td->zone_bytes += io_u->buflen;
+ log_io_u(td, io_u);
return 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.total_io_u[io_u->ddir]++;
}
-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);
}
/*
fno = (unsigned int) ((double) td->o.nr_files * (r / (RAND_MAX + 1.0)));
f = &td->files[fno];
+ if (f->flags & FIO_FILE_DONE)
+ continue;
- if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
+ if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) {
+ dprint(FD_FILE, "get_next_file_rand: %p\n", f);
return f;
+ }
} while (1);
}
if (td->next_file >= td->o.nr_files)
td->next_file = 0;
+ if (f->flags & FIO_FILE_DONE) {
+ f = NULL;
+ continue;
+ }
+
if ((!goodf || (f->flags & goodf)) && !(f->flags & badf))
break;
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)
+ if (!td->nr_open_files || 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;
+ goto out;
if (td->o.file_service_type == FIO_FSERVICE_RR)
f = get_next_file_rr(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\n", f);
return f;
}
{
struct fio_file *f;
+ if (!td->nr_open_files || td->nr_done_files >= td->o.nr_files)
+ return NULL;
+
if (td->o.file_service_type == FIO_FSERVICE_RR)
f = get_next_file_rr(td, 0, FIO_FILE_OPEN);
else
return f;
}
+static int set_io_u_file(struct thread_data *td, struct io_u *io_u)
+{
+ struct fio_file *f;
+
+ do {
+ f = get_next_file(td);
+ if (!f)
+ return 1;
+
+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 || td_io_open_file(td, f))
+ return 1;
+
+ goto set_file;
+ }
+ } while (1);
+
+ return 0;
+}
+
+
struct io_u *__get_io_u(struct thread_data *td)
{
struct io_u *io_u = NULL;
{
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;
-
- if (!fill_io_u(td, io_u))
- break;
-
- /*
- * No more to do for this file, close it
- */
- io_u->file = NULL;
- td_io_close_file(td, f);
-
- /*
- * 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 (io_u->buflen + io_u->offset > f->real_file_size) {
- if (td->io_ops->flags & FIO_RAWIO) {
- put_io_u(td, io_u);
- return NULL;
- }
-
- io_u->buflen = f->real_file_size - io_u->offset;
+ /*
+ * 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;
/*
* 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;
+ if (!td_io_prep(td, io_u)) {
+ 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)
static void io_completed(struct thread_data *td, struct io_u *io_u,
struct io_completion_data *icd)
{
- unsigned long msec;
+ unsigned long usec;
+
+ dprint_io_u(io_u, "io complete");
assert(io_u->flags & IO_U_F_FLIGHT);
io_u->flags &= ~IO_U_F_FLIGHT;
- put_file(td, io_u->file);
-
if (io_u->ddir == DDIR_SYNC) {
td->last_was_sync = 1;
return;
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->offset + io_u->buflen;
+ io_u->file->last_completed_pos = io_u->endpos;
- msec = mtime_since(&io_u->issue_time, &icd->time);
+ usec = utime_since(&io_u->issue_time, &icd->time);
- add_clat_sample(td, idx, msec);
+ add_clat_sample(td, idx, usec);
add_bw_sample(td, idx, &icd->time);
- io_u_mark_latency(td, msec);
+ io_u_mark_latency(td, usec);
- if ((td_rw(td) || td_write(td)) && idx == DDIR_WRITE)
+ if (td_write(td) && idx == DDIR_WRITE &&
+ td->o.do_verify &&
+ td->o.verify != VERIFY_NONE)
log_io_piece(td, io_u);
icd->bytes_done[idx] += bytes;
if (io_u->end_io) {
- ret = io_u->end_io(io_u);
+ ret = io_u->end_io(td, io_u);
if (ret && !icd->error)
icd->error = ret;
}
struct io_completion_data icd;
struct timespec *tvp = NULL;
int ret;
+ struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, };
- if (!min_events) {
- struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, };
+ dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_events);
+ if (!min_events)
tvp = &ts;
- }
ret = td_io_getevents(td, min_events, td->cur_depth, tvp);
if (ret < 0) {
{
unsigned long slat_time;
- slat_time = mtime_since(&io_u->start_time, &io_u->issue_time);
+ slat_time = utime_since(&io_u->start_time, &io_u->issue_time);
add_slat_sample(td, io_u->ddir, slat_time);
}
return;
}
- log_err("fio: io_u timeout: job=%s, pid=%d\n", td->name, td->pid);
+ 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);
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