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From: Jonas Oreland <jonas@mysql.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>, john stultz <johnstul@us.ibm.com>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RT] read_tsc: ACK! TSC went backward! Unsynced TSCs?
Date: Mon, 28 Nov 2005 13:30:24 +0100	[thread overview]
Message-ID: <438AF860.7050905@mysql.com> (raw)
In-Reply-To: <1133179554.11491.3.camel@localhost.localdomain>

Steven Rostedt wrote:
> Hi Ingo,
> 
> With -rt20 on the AMD64 x2, I'm getting a crap load of these:
> 
> read_tsc: ACK! TSC went backward! Unsynced TSCs?
> 
> So bad that the system wont even boot (at least I won't wait long enough
> to let it finish).
> 
> config at: http://www.kihontech.com/tests/rt/config

Check this: http://bugzilla.kernel.org/show_bug.cgi?id=5105

Booting with idle=poll, fixes that.

Hope it help

/Jonas

  reply	other threads:[~2005-11-28 12:27 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-28 12:05 [RT] read_tsc: ACK! TSC went backward! Unsynced TSCs? Steven Rostedt
2005-11-28 12:30 ` Jonas Oreland [this message]
2005-11-28 12:59   ` Steven Rostedt
2005-11-28 14:21     ` Ingo Molnar
2005-11-28 15:38   ` Lee Revell
2005-11-28 17:30 ` thockin
2005-11-28 17:39   ` Lee Revell
2005-11-28 18:30     ` Dave Jones
2005-11-28 18:35     ` thockin
2005-11-29 14:06       ` Andi Kleen
2005-11-29 16:52         ` thockin
2005-11-29 16:48           ` Andi Kleen

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