Avoid memory allocation/sync time when calculate throughput

The start time is changed to after allocate memory and sync between
tasks.

Signed-off-by: Huang Ying <ying.huang@intel.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/usemem.c b/usemem.c
index 867624f..f36b5c9 100644
--- a/usemem.c
+++ b/usemem.c
@@ -66,7 +66,8 @@ unsigned long *prealloc;
 unsigned long *buffer;
 int sleep_secs = 0;
 time_t runtime_secs = 0;
-struct timeval start_time;
+__thread struct timeval start_time;
+__thread int started = 0;
 int reps = 1;
 int do_mlock = 0;
 int do_getchar = 0;
@@ -586,6 +587,12 @@ unsigned long do_unit(unsigned long bytes, struct drand48_data *rand_data,
 	if (opt_sync_rw)
 		ready();
 
+	if (!started) {
+		/* Avoid timing memory allocation and syncing */
+		gettimeofday(&start_time, NULL);
+		started = 1;
+	}
+
 	if (opt_write_signal_read)
 		buffer = p;