Merge branch 'master' of ssh://brick.kernel.dk/data/git/fio

[fio.git] / fio.c

diff --git a/fio.c b/fio.c
index b4415fa7d942c2413018fb1f174345c9cb74c339..f0665e072ccbd5f6ac3f4dcd52a5edfe015cbf31 100644 (file)
--- a/fio.c
+++ b/fio.c
@@ -733,7 +733,7 @@ static int init_io_u(struct thread_data *td)
 {
        struct io_u *io_u;
        unsigned int max_bs;
-       int i, max_units;
+       int cl_align, i, max_units;
        char *p;
 
        max_units = td->o.iodepth;
@@ -761,10 +761,20 @@ static int init_io_u(struct thread_data *td)
        else
                p = td->orig_buffer;
 
+       cl_align = os_cache_line_size();
+
        for (i = 0; i < max_units; i++) {
+               void *ptr;
+
                if (td->terminate)
                        return 1;
-               io_u = malloc(sizeof(*io_u));
+
+               if (posix_memalign(&ptr, cl_align, sizeof(*io_u))) {
+                       log_err("fio: posix_memalign=%s\n", strerror(errno));
+                       break;
+               }
+
+               io_u = ptr;
                memset(io_u, 0, sizeof(*io_u));
                INIT_FLIST_HEAD(&io_u->list);
 
@@ -876,6 +886,11 @@ static void reset_io_counters(struct thread_data *td)
         */
        if (td->o.time_based || td->o.loops)
                td->nr_done_files = 0;
+
+       /*
+        * Set the same seed to get repeatable runs
+        */
+       td_fill_rand_seeds(td);
 }
 
 void reset_all_stats(struct thread_data *td)
@@ -897,25 +912,16 @@ void reset_all_stats(struct thread_data *td)
        memcpy(&td->start, &tv, sizeof(tv));
 }
 
-static int clear_io_state(struct thread_data *td)
+static void clear_io_state(struct thread_data *td)
 {
        struct fio_file *f;
        unsigned int i;
-       int ret;
 
        reset_io_counters(td);
 
        close_files(td);
-
-       ret = 0;
-       for_each_file(td, f, i) {
+       for_each_file(td, f, i)
                f->flags &= ~FIO_FILE_DONE;
-               ret = td_io_open_file(td, f);
-               if (ret)
-                       break;
-       }
-
-       return ret;
 }
 
 /*
@@ -1003,9 +1009,6 @@ static void *thread_main(void *data)
        if (td_io_init(td))
                goto err;
 
-       if (open_files(td))
-               goto err;
-
        if (init_random_map(td))
                goto err;
 
@@ -1028,8 +1031,8 @@ static void *thread_main(void *data)
                        memcpy(&td->lastrate, &td->ts.stat_sample_time,
                                                        sizeof(td->lastrate));
 
-               if (clear_state && clear_io_state(td))
-                       break;
+               if (clear_state)
+                       clear_io_state(td);
 
                prune_io_piece_log(td);
 
@@ -1064,8 +1067,7 @@ static void *thread_main(void *data)
                    (td->io_ops->flags & FIO_UNIDIR))
                        continue;
 
-               if (clear_io_state(td))
-                       break;
+               clear_io_state(td);
 
                fio_gettime(&td->start, NULL);
 
@@ -1094,7 +1096,7 @@ static void *thread_main(void *data)
        if (td->ts.slat_log) {
                if (td->o.lat_log_file) {
                        finish_log_named(td, td->ts.slat_log,
-                                               td->o.lat_log_file, "clat");
+                                               td->o.lat_log_file, "slat");
                } else
                        finish_log(td, td->ts.slat_log, "slat");
        }