From: Lee Revell <rlrevell@joe-job.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: John Rigg <lk@sound-man.co.uk>,
linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>
Subject: Re: 2.6.15-rt2 x86_64 SMP instability
Date: Sun, 08 Jan 2006 19:30:17 -0500 [thread overview]
Message-ID: <1136766618.2997.6.camel@mindpipe> (raw)
In-Reply-To: <Pine.LNX.4.58.0601081923430.26375@gandalf.stny.rr.com>
On Sun, 2006-01-08 at 19:26 -0500, Steven Rostedt wrote:
> Yep, this is a known issue, with the x86_64 SMP. The timestamp counter
> does not run in sync with each cpu, so the timing gets all screwed up.
> If you want to fix this, boot with the command line option idle=poll.
> But, unfortunately, this means that the cpu will waste energy even when
> it's not doing anything.
>
> I'm looking into ways to fix this for my main machine which is also a
> x86_64 SMP.
>
I thought this could be worked around by using the ACPI PM timer?
Lee
prev parent reply other threads:[~2006-01-09 0:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-08 23:07 2.6.15-rt2 x86_64 SMP instability John Rigg
2006-01-09 0:26 ` Steven Rostedt
2006-01-09 0:30 ` Lee Revell [this message]
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