[PATCH] Support for mmap of hugetlb files as memory backing
[fio.git] / fio.c
diff --git a/fio.c b/fio.c
index 81e9e90d6ae154477354dbe17ce11637cb65d2c5..8a4a44dc902f0f0dde0695deceaefb1dbab9ae4a 100644 (file)
--- a/fio.c
+++ b/fio.c
@@ -45,7 +45,6 @@ int groupid = 0;
 int thread_number = 0;
 int shm_id = 0;
 int temp_stall_ts;
-char *fio_inst_prefix = _INST_PREFIX;
 
 static volatile int startup_sem;
 
@@ -106,7 +105,7 @@ static int check_min_rate(struct thread_data *td, struct timeval *now)
 
                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);
+                       fprintf(f_out, "%s: min rate %u not met, got %luKiB/sec\n", td->name, td->ratemin, rate);
                        return 1;
                }
        }
@@ -243,9 +242,8 @@ static int fio_io_sync(struct thread_data *td, struct fio_file *f)
  * 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)
+static void do_verify(struct thread_data *td)
 {
-       struct timeval t;
        struct io_u *io_u, *v_io_u = NULL;
        struct io_completion_data icd;
        struct fio_file *f;
@@ -266,14 +264,15 @@ void do_verify(struct thread_data *td)
                if (td->terminate)
                        break;
 
-               gettimeofday(&t, NULL);
-               if (runtime_exceeded(td, &t))
-                       break;
-
                io_u = __get_io_u(td);
                if (!io_u)
                        break;
 
+               if (runtime_exceeded(td, &io_u->start_time)) {
+                       put_io_u(td, io_u);
+                       break;
+               }
+
                if (get_next_verify(td, io_u)) {
                        put_io_u(td, io_u);
                        break;
@@ -314,6 +313,7 @@ void do_verify(struct thread_data *td)
                v_io_u = td->io_ops->event(td, 0);
                icd.nr = 1;
                icd.error = 0;
+               fio_gettime(&icd.time, NULL);
                io_completed(td, v_io_u, &icd);
 
                if (icd.error) {
@@ -350,7 +350,7 @@ static void do_cpuio(struct thread_data *td)
        int i = 0;
 
        while (!td->terminate) {
-               gettimeofday(&e, NULL);
+               fio_gettime(&e, NULL);
 
                if (runtime_exceeded(td, &e))
                        break;
@@ -371,7 +371,7 @@ static void do_cpuio(struct thread_data *td)
 static void do_io(struct thread_data *td)
 {
        struct io_completion_data icd;
-       struct timeval s, e;
+       struct timeval s;
        unsigned long usec;
        struct fio_file *f;
        int i, ret = 0;
@@ -433,26 +433,25 @@ static void do_io(struct thread_data *td)
                 * of completions except the very first one which may look
                 * a little bursty
                 */
-               gettimeofday(&e, NULL);
-               usec = utime_since(&s, &e);
+               usec = utime_since(&s, &icd.time);
 
-               rate_throttle(td, usec, icd.bytes_done[td->ddir]);
+               rate_throttle(td, usec, icd.bytes_done[td->ddir], td->ddir);
 
-               if (check_min_rate(td, &e)) {
-                       if (rate_quit)
+               if (check_min_rate(td, &icd.time)) {
+                       if (exitall_on_terminate)
                                terminate_threads(td->groupid);
                        td_verror(td, ENOMEM);
                        break;
                }
 
-               if (runtime_exceeded(td, &e))
+               if (runtime_exceeded(td, &icd.time))
                        break;
 
                if (td->thinktime)
                        usec_sleep(td, td->thinktime);
        }
 
-       if (!ret) {
+       if (!td->error) {
                if (td->cur_depth)
                        cleanup_pending_aio(td);
 
@@ -479,9 +478,23 @@ static void cleanup_io_u(struct thread_data *td)
        free_io_mem(td);
 }
 
+/*
+ * "randomly" fill the buffer contents
+ */
+static void fill_rand_buf(struct io_u *io_u, int max_bs)
+{
+       int *ptr = io_u->buf;
+
+       while ((void *) ptr - io_u->buf < max_bs) {
+               *ptr = rand() * 0x9e370001;
+               ptr++;
+       }
+}
+
 static int init_io_u(struct thread_data *td)
 {
        struct io_u *io_u;
+       unsigned int max_bs;
        int i, max_units;
        char *p;
 
@@ -493,7 +506,13 @@ static int init_io_u(struct thread_data *td)
        else
                max_units = td->iodepth;
 
-       td->orig_buffer_size = td->max_bs * max_units + MASK;
+       max_bs = max(td->max_bs[DDIR_READ], td->max_bs[DDIR_WRITE]);
+       td->orig_buffer_size = max_bs * max_units;
+
+       if (td->mem_type == MEM_SHMHUGE || td->mem_type == MEM_MMAPHUGE)
+               td->orig_buffer_size = (td->orig_buffer_size + FIO_HUGE_PAGE - 1) & ~(FIO_HUGE_PAGE - 1);
+       else
+               td->orig_buffer_size += MASK;
 
        if (allocate_io_mem(td))
                return 1;
@@ -504,7 +523,10 @@ static int init_io_u(struct thread_data *td)
                memset(io_u, 0, sizeof(*io_u));
                INIT_LIST_HEAD(&io_u->list);
 
-               io_u->buf = p + td->max_bs * i;
+               io_u->buf = p + max_bs * i;
+               if (td_write(td) || td_rw(td))
+                       fill_rand_buf(io_u, max_bs);
+
                io_u->index = i;
                list_add(&io_u->list, &td->io_u_freelist);
        }
@@ -588,6 +610,7 @@ static void clear_io_state(struct thread_data *td)
  */
 static void *thread_main(void *data)
 {
+       unsigned long long runtime[2];
        struct thread_data *td = data;
 
        if (!td->use_thread)
@@ -638,15 +661,18 @@ static void *thread_main(void *data)
 
        if (!td->create_serialize && setup_files(td))
                goto err;
-
-       gettimeofday(&td->epoch, NULL);
+       if (open_files(td))
+               goto err;
 
        if (td->exec_prerun)
                system(td->exec_prerun);
 
+       fio_gettime(&td->epoch, NULL);
+       getrusage(RUSAGE_SELF, &td->ru_start);
+
+       runtime[0] = runtime[1] = 0;
        while (td->loops--) {
-               getrusage(RUSAGE_SELF, &td->ru_start);
-               gettimeofday(&td->start, NULL);
+               fio_gettime(&td->start, NULL);
                memcpy(&td->stat_sample_time, &td->start, sizeof(td->start));
 
                if (td->ratemin)
@@ -660,11 +686,9 @@ static void *thread_main(void *data)
                else
                        do_io(td);
 
-               td->runtime[td->ddir] += mtime_since_now(&td->start);
+               runtime[td->ddir] += utime_since_now(&td->start);
                if (td_rw(td) && td->io_bytes[td->ddir ^ 1])
-                       td->runtime[td->ddir ^ 1] = td->runtime[td->ddir];
-
-               update_rusage_stat(td);
+                       runtime[td->ddir ^ 1] = runtime[td->ddir];
 
                if (td->error || td->terminate)
                        break;
@@ -673,16 +697,21 @@ static void *thread_main(void *data)
                        continue;
 
                clear_io_state(td);
-               gettimeofday(&td->start, NULL);
+               fio_gettime(&td->start, NULL);
 
                do_verify(td);
 
-               td->runtime[DDIR_READ] += mtime_since_now(&td->start);
+               runtime[DDIR_READ] += utime_since_now(&td->start);
 
                if (td->error || td->terminate)
                        break;
        }
 
+       update_rusage_stat(td);
+       fio_gettime(&td->end_time, NULL);
+       td->runtime[0] = runtime[0] / 1000;
+       td->runtime[1] = runtime[1] / 1000;
+
        if (td->bw_log)
                finish_log(td, td->bw_log, "bw");
        if (td->slat_log)
@@ -733,12 +762,12 @@ static void *fork_main(int shmid, int offset)
 static void reap_threads(int *nr_running, int *t_rate, int *m_rate)
 {
        struct thread_data *td;
-       int i, cputhreads;
+       int i, cputhreads, pending;
 
        /*
         * reap exited threads (TD_EXITED -> TD_REAPED)
         */
-       cputhreads = 0;
+       pending = cputhreads = 0;
        for_each_td(td, i) {
                /*
                 * ->io_ops is NULL for a thread that has closed its
@@ -747,8 +776,12 @@ static void reap_threads(int *nr_running, int *t_rate, int *m_rate)
                if (td->io_ops && td->io_ops->flags & FIO_CPUIO)
                        cputhreads++;
 
-               if (td->runstate != TD_EXITED)
+               if (td->runstate != TD_EXITED) {
+                       if (td->runstate < TD_RUNNING)
+                               pending++;
+
                        continue;
+               }
 
                td_set_runstate(td, TD_REAPED);
 
@@ -765,7 +798,7 @@ static void reap_threads(int *nr_running, int *t_rate, int *m_rate)
                (*t_rate) -= td->rate;
        }
 
-       if (*nr_running == cputhreads)
+       if (*nr_running == cputhreads && !pending)
                terminate_threads(TERMINATE_ALL);
 }
 
@@ -813,8 +846,6 @@ static void run_threads(void)
                }
        }
 
-       time_init();
-
        while (todo) {
                struct thread_data *map[MAX_JOBS];
                struct timeval this_start;
@@ -874,7 +905,7 @@ static void run_threads(void)
                 * Wait for the started threads to transition to
                 * TD_INITIALIZED.
                 */
-               gettimeofday(&this_start, NULL);
+               fio_gettime(&this_start, NULL);
                left = this_jobs;
                while (left) {
                        if (mtime_since_now(&this_start) > JOB_START_TIMEOUT)