From d7abad3d0a2aab71707264ae088ecc19c88585dc Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 10 Dec 2012 10:15:59 +0100 Subject: [PATCH 1/1] cpu clock: round up when dividing by samples Signed-off-by: Jens Axboe --- gettime.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/gettime.c b/gettime.c index df42c29c..1ba18e99 100644 --- a/gettime.c +++ b/gettime.c @@ -247,7 +247,8 @@ static void calibrate_cpu_clock(void) for (i = 0; i < NR_TIME_ITERS; i++) dprint(FD_TIME, "cycles[%d]=%lu\n", i, cycles[i] / 10); - avg /= (samples * 10); + avg /= samples; + avg = (avg + 9) / 10; dprint(FD_TIME, "avg: %lu\n", avg); dprint(FD_TIME, "mean=%f, S=%f\n", mean, S); -- 2.25.1