From: Tomasz Chmielewski <mangoo@wpkg.org>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: kvm@vger.kernel.org
Subject: Re: Houston, we have May 15, 1953 (says guest when host uses cpufreq, and dies)
Date: Wed, 18 Feb 2009 17:11:19 +0100 [thread overview]
Message-ID: <499C3327.3090207@wpkg.org> (raw)
In-Reply-To: <499C3131.3030601@codemonkey.ws>
Anthony Liguori schrieb:
> Tomasz Chmielewski wrote:
>> Is using cpufreq (i.e. with ondemand governor) on KVM host safe for
>> guests?
>>
>> I enabled cpufreq on the host, it scaled down the host CPU (Dual-Core
>> AMD Opteron(tm) Processor 2212) to 1 GHz from 2 GHz.
>
> Not with your processor. Intel processors should be fine and any AMD
> processor that's Barcelona/Phenom or newer.
Looks I'm a bad, bad, anti-environment CO2 contributor then.
From a technical perspective, what are the problems with my CPU that it
scales down on the host just fine, but makes the guests "return to the
past"?
--
Tomasz Chmielewski
http://wpkg.org
next prev parent reply other threads:[~2009-02-18 16:11 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-18 14:51 Houston, we have May 15, 1953 (says guest when host uses cpufreq, and dies) Tomasz Chmielewski
2009-02-18 16:02 ` Anthony Liguori
2009-02-18 16:11 ` Tomasz Chmielewski [this message]
2009-02-18 16:59 ` Avi Kivity
2009-02-18 17:02 ` Tomasz Chmielewski
2009-02-18 20:37 ` Anthony Liguori
2009-02-19 9:15 ` Gerd Hoffmann
2009-02-19 9:20 ` Tomasz Chmielewski
2009-02-19 10:27 ` Gerd Hoffmann
2009-02-18 18:46 ` Marcelo Tosatti
2009-02-18 18:53 ` Tomasz Chmielewski
2009-02-18 18:57 ` Marcelo Tosatti
2009-02-18 19:07 ` Tomasz Chmielewski
2009-02-18 19:10 ` Marcelo Tosatti
2009-02-18 19:18 ` Tomasz Chmielewski
2009-02-18 19:32 ` Marcelo Tosatti
2009-02-18 20:02 ` Tomasz Chmielewski
2009-02-18 20:03 ` Marcelo Tosatti
2009-02-19 14:43 ` Tomasz Chmielewski
2009-03-07 14:59 ` Tomasz Chmielewski
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