From: Jens Axboe <axboe@fb.com>
Date: Tue, 16 Dec 2014 02:54:57 +0000 (-0700)
Subject: backend: use monotonic clock for ETA, if we have it
X-Git-Tag: fio-2.2.0~13
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=f893b76d5745;p=fio.git

backend: use monotonic clock for ETA, if we have it

Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/backend.c b/backend.c
index f1def38b..3df0133f 100644
--- a/backend.c
+++ b/backend.c
@@ -2104,11 +2104,19 @@ static void *helper_thread_main(void *data)
 		uint64_t sec = DISK_UTIL_MSEC / 1000;
 		uint64_t nsec = (DISK_UTIL_MSEC % 1000) * 1000000;
 		struct timespec ts;
+
+#if defined(CONFIG_CLOCK_MONOTONIC)
+		clock_gettime(CLOCK_MONOTONIC, &ts);
+		ts.tv_sec += sec;
+		ts.tv_nsec += nsec;
+#else
 		struct timeval tv;
 
 		gettimeofday(&tv, NULL);
 		ts.tv_sec = tv.tv_sec + sec;
 		ts.tv_nsec = (tv.tv_usec * 1000) + nsec;
+#endif
+
 		if (ts.tv_nsec >= 1000000000ULL) {
 			ts.tv_nsec -= 1000000000ULL;
 			ts.tv_sec++;