From: Brian Bloniarz <bmb@athenacr.com>
To: mingo@elte.hu, linux-kernel@vger.kernel.org
Subject: Re: gettimeofday() time warps on Nehalem
Date: Fri, 19 Jun 2009 18:34:33 -0400 [thread overview]
Message-ID: <4A3C1279.6040506@athenacr.com> (raw)
In-Reply-To: <4A3BAAE8.3030606@athenacr.com>
Brian Bloniarz wrote:
> $ ./time-warp-test
> 16 CPUs, running 16 parallel test-tasks.
> checking for time-warps via:
> - gettimeofday (TOD) syscall (usec resolution)
>
> new TOD-warp maximum: -1 usecs, 00046cb465acb046 -> 00046cb465acb045
> new TOD-warp maximum: -2 usecs, 00046cb465ad7515 -> 00046cb465ad7513
> TOD: 0.26us, fail:21534 \
Ignore this. I killed NTP before running these tests, but
it looks now like a script from my distro restarted it.
I can no longer reproduce the problem, sorry for the noise.
Thanks,
-Brian
prev parent reply other threads:[~2009-06-19 22:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-19 15:12 gettimeofday() time warps on Nehalem Brian Bloniarz
2009-06-19 22:34 ` Brian Bloniarz [this message]
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