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;
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++) {
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_mb[0]*1024*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_mb[1]*1024*1024) / rs->max_run[1];
}
/*
projects / fio.git / blobdiff