static void mark_random_map(struct thread_data *td, struct io_u *io_u)
{
- unsigned long block = io_u->offset / td->min_bs;
+ 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)) {
long r;
if (!td->sequential) {
- unsigned long max_blocks = td->io_size / td->min_bs;
+ unsigned long long max_blocks = td->io_size / td->min_bs;
int loops = 50;
do {
lrand48_r(&td->random_state, &r);
- b = ((max_blocks - 1) * r / (RAND_MAX+1.0));
+ 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);
memcpy(hdr->md5_digest, md5_ctx.hash, sizeof(md5_ctx.hash));
}
-unsigned int hweight32(unsigned int w)
-{
- unsigned int res = w - ((w >> 1) & 0x55555555);
-
- res = (res & 0x33333333) + ((res >> 2) & 0x33333333);
- res = (res + (res >> 4)) & 0x0F0F0F0F;
- res = res + (res >> 8);
-
- return (res + (res >> 16)) & 0x000000FF;
-}
-
-unsigned long hweight64(unsigned long long w)
+static int get_rw_ddir(struct thread_data *td)
{
-#if __WORDSIZE == 32
- return hweight32((unsigned int)(w >> 32)) + hweight32((unsigned int)w);
-#elif __WORDSIZE == 64
- unsigned long long v = w - ((w >> 1) & 0x5555555555555555ul);
+ if (td_rw(td)) {
+ struct timeval now;
+ unsigned long elapsed;
- v = (v & 0x3333333333333333ul) + ((v >> 2) & 0x3333333333333333ul);
- v = (v + (v >> 4)) & 0x0F0F0F0F0F0F0F0Ful;
- v = v + (v >> 8);
- v = v + (v >> 16);
+ gettimeofday(&now, NULL);
+ elapsed = mtime_since_now(&td->rwmix_switch);
- return (v + (v >> 32)) & 0x00000000000000FFul;
-#else
-#error __WORDSIZE not defined
-#endif
-}
+ /*
+ * Check if it's time to seed a new data direction.
+ */
+ if (elapsed >= td->rwmixcycle) {
+ unsigned long v;
+ long r;
-static int get_rw_ddir(struct thread_data *td)
-{
- /*
- * perhaps cheasy, but use the hamming weight of the position
- * as a randomizer for data direction.
- */
- if (td_rw(td))
- return hweight64(td->last_pos) & 1;
- else if (td_read(td))
+ lrand48_r(&td->random_state, &r);
+ v = 100UL * r / (unsigned long) (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;
td->cur_depth--;
}
-static int fill_io_u(struct thread_data *td, struct io_u *io_u)
+static void write_iolog_put(struct thread_data *td, struct io_u *io_u)
{
- /*
- * If using an iolog, grab next piece if any available.
- */
- if (td->iolog) {
- struct io_piece *ipo;
+ fprintf(td->iolog_f, "%d,%llu,%u\n", io_u->ddir, io_u->offset, io_u->buflen);
+}
- if (list_empty(&td->io_log_list))
- return 1;
+static int read_iolog_get(struct thread_data *td, struct io_u *io_u)
+{
+ struct io_piece *ipo;
+ if (!list_empty(&td->io_log_list)) {
ipo = list_entry(td->io_log_list.next, struct io_piece, list);
list_del(&ipo->list);
io_u->offset = ipo->offset;
return 0;
}
+ return 1;
+}
+
+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->read_iolog)
+ return read_iolog_get(td, io_u);
+
/*
* No log, let the seq/rand engine retrieve the next position.
*/
if (io_u->buflen) {
io_u->ddir = get_rw_ddir(td);
+
+ /*
+ * If using a write iolog, store this entry.
+ */
+ if (td->write_iolog)
+ write_iolog_put(td, io_u);
+
return 0;
}
}
return NULL;
}
- if (!td->iolog && !td->sequential)
+ if (!td->read_iolog && !td->sequential)
mark_random_map(td, io_u);
td->last_pos += io_u->buflen;
list_add(&ipo->list, entry);
}
+static void write_iolog_close(struct thread_data *td)
+{
+ fflush(td->iolog_f);
+ fclose(td->iolog_f);
+ free(td->iolog_buf);
+}
+
static int init_iolog(struct thread_data *td)
{
unsigned long long offset;
FILE *f;
int rw, i, reads, writes;
- if (!td->iolog)
+ if (!td->read_iolog && !td->write_iolog)
return 0;
- f = fopen(td->iolog_file, "r");
+ if (td->read_iolog)
+ f = fopen(td->iolog_file, "r");
+ else
+ f = fopen(td->iolog_file, "w");
+
if (!f) {
perror("fopen iolog");
+ printf("file %s, %d/%d\n", td->iolog_file, td->read_iolog, td->write_iolog);
return 1;
}
+ /*
+ * That's it for writing, setup a log buffer and we're done.
+ */
+ if (td->write_iolog) {
+ td->iolog_f = f;
+ td->iolog_buf = malloc(8192);
+ setvbuf(f, td->iolog_buf, _IOFBF, 8192);
+ return 0;
+ }
+
+ /*
+ * Read in the read iolog and store it, reuse the infrastructure
+ * for doing verifications.
+ */
str = malloc(4096);
reads = writes = i = 0;
while ((p = fgets(str, 4096, f)) != NULL) {
return 0;
}
+static void cleanup_allocs(struct thread_data *td)
+{
+ if (td->directory)
+ free(td->directory);
+ if (td->iolog_file)
+ free(td->iolog_file);
+ if (td->exec_prerun)
+ free(td->exec_prerun);
+ if (td->exec_postrun)
+ free(td->exec_postrun);
+ if (td->ioscheduler)
+ free(td->ioscheduler);
+ if (td->sysfs_root)
+ free(td->sysfs_root);
+}
+
static int create_file(struct thread_data *td, unsigned long long size,
int extend)
{
sprintf(foo, "%s", p);
}
+ td->sysfs_root = strdup(foo);
disk_util_add(dev, foo);
}
+static int switch_ioscheduler(struct thread_data *td)
+{
+ char tmp[256], tmp2[128];
+ FILE *f;
+ int ret;
+
+ sprintf(tmp, "%s/queue/scheduler", td->sysfs_root);
+
+ f = fopen(tmp, "r+");
+ if (!f) {
+ td_verror(td, errno);
+ return 1;
+ }
+
+ /*
+ * Set io scheduler.
+ */
+ ret = fwrite(td->ioscheduler, strlen(td->ioscheduler), 1, f);
+ if (ferror(f) || ret != 1) {
+ td_verror(td, errno);
+ fclose(f);
+ return 1;
+ }
+
+ rewind(f);
+
+ /*
+ * Read back and check that the selected scheduler is now the default.
+ */
+ ret = fread(tmp, 1, sizeof(tmp), f);
+ if (ferror(f) || ret < 0) {
+ td_verror(td, errno);
+ fclose(f);
+ return 1;
+ }
+
+ sprintf(tmp2, "[%s]", td->ioscheduler);
+ if (!strstr(tmp, tmp2)) {
+ fprintf(stderr, "fio: io scheduler %s not found\n", td->ioscheduler);
+ td_verror(td, EINVAL);
+ fclose(f);
+ return 1;
+ }
+
+ fclose(f);
+ return 0;
+}
+
static void disk_util_timer_arm(void)
{
itimer.it_value.tv_sec = 0;
static void *thread_main(void *data)
{
struct thread_data *td = data;
- int ret = 1;
if (!td->use_thread)
setsid();
}
}
+ if (nice(td->nice) < 0) {
+ td_verror(td, errno);
+ goto err;
+ }
+
if (init_random_state(td))
goto err;
+ if (td->ioscheduler && switch_ioscheduler(td))
+ goto err;
+
td_set_runstate(td, TD_INITIALIZED);
sem_post(&startup_sem);
sem_wait(&td->mutex);
gettimeofday(&td->epoch, NULL);
+ if (td->exec_prerun)
+ system(td->exec_prerun);
+
while (td->loops--) {
getrusage(RUSAGE_SELF, &td->ru_start);
gettimeofday(&td->start, NULL);
break;
}
- ret = 0;
-
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);
if (exitall_on_terminate)
terminate_threads(td->groupid);
}
if (td->mmap)
munmap(td->mmap, td->file_size);
+ cleanup_allocs(td);
cleanup_io(td);
cleanup_io_u(td);
- if (ret) {
- sem_post(&startup_sem);
- sem_wait(&td->mutex);
- }
td_set_runstate(td, TD_EXITED);
return NULL;
int ddir)
{
char *ddir_str[] = { "read ", "write" };
- unsigned long min, max, bw;
+ unsigned long min, max;
+ unsigned long long bw;
double mean, dev;
if (!td->runtime[ddir])
return;
bw = td->io_bytes[ddir] / td->runtime[ddir];
- printf(" %s: io=%6lluMiB, bw=%6luKiB/s, runt=%6lumsec\n", ddir_str[ddir], td->io_bytes[ddir] >> 20, bw, td->runtime[ddir]);
+ printf(" %s: io=%6lluMiB, bw=%6lluKiB/s, runt=%6lumsec\n", ddir_str[ddir], td->io_bytes[ddir] >> 20, bw, td->runtime[ddir]);
if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
printf(" slat (msec): min=%5lu, max=%5lu, avg=%5.02f, dev=%5.02f\n", min, max, mean, dev);
td = map[i];
if (!td)
continue;
- if (td->runstate == TD_INITIALIZED ||
- td->runstate >= TD_EXITED) {
+ if (td->runstate == TD_INITIALIZED) {
map[i] = NULL;
left--;
- continue;
+ } else if (td->runstate >= TD_EXITED) {
+ map[i] = NULL;
+ left--;
+ todo--;
+ nr_running++; /* work-around... */
}
}
}
}
/*
- * start created threads (TD_INITIALIZED -> TD_RUNNING)
+ * start created threads (TD_INITIALIZED -> TD_RUNNING).
*/
printf("fio: Go for launch\n");
for (i = 0; i < thread_number; i++) {
printf("\nRun status group %d (all jobs):\n", id);
if (rs->max_run[DDIR_READ])
- printf(" READ: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_mb[0], rs->agg[0], rs->min_bw[0], rs->max_bw[0], rs->min_run[0], rs->max_run[0]);
+ printf(" READ: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_kb[0] >> 10, rs->agg[0], rs->min_bw[0], rs->max_bw[0], rs->min_run[0], rs->max_run[0]);
if (rs->max_run[DDIR_WRITE])
- printf(" WRITE: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_mb[1], rs->agg[1], rs->min_bw[1], rs->max_bw[1], rs->min_run[1], rs->max_run[1]);
+ printf(" WRITE: io=%lluMiB, aggrb=%llu, minb=%llu, maxb=%llu, mint=%llumsec, maxt=%llumsec\n", rs->io_kb[1] >> 10, rs->agg[1], rs->min_bw[1], rs->max_bw[1], rs->min_run[1], rs->max_run[1]);
}
static void show_disk_util(void)
}
for (i = 0; i < thread_number; i++) {
- unsigned long rbw, wbw;
+ unsigned long long rbw, wbw;
td = &threads[i];
rbw = wbw = 0;
if (td->runtime[0])
- rbw = td->io_bytes[0] / td->runtime[0];
+ rbw = td->io_bytes[0] / (unsigned long long) td->runtime[0];
if (td->runtime[1])
- wbw = td->io_bytes[1] / td->runtime[1];
+ wbw = td->io_bytes[1] / (unsigned long long) td->runtime[1];
if (rbw < rs->min_bw[0])
rs->min_bw[0] = rbw;
if (wbw > rs->max_bw[1])
rs->max_bw[1] = wbw;
- rs->io_mb[0] += td->io_bytes[0] >> 20;
- rs->io_mb[1] += td->io_bytes[1] >> 20;
+ rs->io_kb[0] += td->io_bytes[0] >> 10;
+ rs->io_kb[1] += td->io_bytes[1] >> 10;
}
for (i = 0; i < groupid + 1; i++) {
rs = &runstats[i];
if (rs->max_run[0])
- rs->agg[0] = (rs->io_mb[0]*1024*1000) / rs->max_run[0];
+ rs->agg[0] = (rs->io_kb[0]*1024) / rs->max_run[0];
if (rs->max_run[1])
- rs->agg[1] = (rs->io_mb[1]*1024*1000) / rs->max_run[1];
+ rs->agg[1] = (rs->io_kb[1]*1024) / rs->max_run[1];
}
/*
projects / fio.git / blobdiff