From: Andi Kleen <andi@firstfloor.org>
To: markh@compro.net
Cc: Arjan van de Ven <arjan@infradead.org>,
"linux-os (Dick Johnson)" <linux-os@analogic.com>,
Jan Engelhardt <jengelh@medozas.de>,
"Kok, Auke" <auke-jan.h.kok@intel.com>,
"solsTiCe d'Hiver" <solstice.dhiver@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: no cpu MHz in /proc/cpuinfo on 2.6.25.4-rt6
Date: Thu, 12 Jun 2008 01:08:55 +0200 [thread overview]
Message-ID: <8763sfpo1k.fsf@basil.nowhere.org> (raw)
In-Reply-To: <48501159.4050908@compro.net> (Mark Hounschell's message of "Wed, 11 Jun 2008 13:54:33 -0400")
Mark Hounschell <markh@compro.net> writes:
>
> OK. If I am always using AMD Opteron/X64 class machines am I safe here
> when no cpu freq scaling stuff is on and I'm pinned to a particular processor?
It depends on what you want to be safe against, but if you mean
"RDTSC output has an ongoing stable frequency matching your wall clock with a constant
factor" then no, you won't be safe.
-Andi
next prev parent reply other threads:[~2008-06-11 23:09 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-10 19:52 solsTiCe d'Hiver
2008-06-10 20:13 ` Arjan van de Ven
2008-06-10 20:42 ` Kok, Auke
2008-06-11 12:42 ` Jan Engelhardt
2008-06-11 13:36 ` Arjan van de Ven
2008-06-11 13:52 ` Jan Engelhardt
2008-06-11 13:58 ` Arjan van de Ven
2008-06-11 14:14 ` linux-os (Dick Johnson)
2008-06-11 15:10 ` Peter Zijlstra
2008-06-11 15:36 ` Arjan van de Ven
2008-06-11 16:59 ` Mark Hounschell
2008-06-11 17:44 ` Arjan van de Ven
2008-06-11 17:54 ` Mark Hounschell
2008-06-11 20:29 ` Arjan van de Ven
2008-06-11 20:37 ` Mark Hounschell
2008-06-11 20:55 ` Arjan van de Ven
2008-06-11 20:59 ` Mark Hounschell
2008-06-11 20:58 ` Arjan van de Ven
2008-06-11 21:08 ` Mark Hounschell
2008-06-11 21:28 ` Arjan van de Ven
2008-06-11 21:39 ` Chris Friesen
2008-06-11 23:08 ` Andi Kleen [this message]
2008-06-11 16:08 ` Ray Lee
2008-06-11 16:32 ` Arjan van de Ven
2008-06-11 12:40 ` Jan Engelhardt
2008-06-11 14:15 ` solsTiCe d'Hiver
2008-06-11 14:36 ` Jan Engelhardt
2008-06-11 15:35 ` solsTiCe d'Hiver
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