From: Avi Kivity <avi@redhat.com>
To: Nick <oinksocket@letterboxes.org>
Cc: thomas@fjellstrom.ca, "kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: kvm linux guest hanging for minutes at a time
Date: Thu, 11 Aug 2011 09:38:57 +0300 [thread overview]
Message-ID: <4E437901.9070207@redhat.com> (raw)
In-Reply-To: <4E41534F.1010502@letterboxes.org>
On 08/09/2011 06:33 PM, Nick wrote:
> Hi,
>
> Just joined this list, looking for leads to solve a similar-sounding problem
> (guest processes hanging for seconds or minutes when host IO load is high).
> I'll say more in a separate email, but I caught the end of this thread and
> wanted to ask about kvm-clock.
>
> Naively I'd have thought that using the wrong clock would not actually *cause*
> hangs like this. Or is that what you're implying?
>
>
Using the wrong clock easily causes hangs. The system schedules a
wakeup in 3 ms, wrong clock causes it to wakeup in 3 years, you get a
hang for (3 years - 3 ms).
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2011-08-11 6:39 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-07 14:06 kvm linux guest hanging for minutes at a time Thomas Fjellstrom
2011-08-09 9:16 ` Avi Kivity
2011-08-09 12:03 ` Thomas Fjellstrom
2011-08-09 12:36 ` Avi Kivity
2011-08-09 14:31 ` Thomas Fjellstrom
2011-08-09 14:37 ` Avi Kivity
2011-08-09 14:46 ` Thomas Fjellstrom
2011-08-09 14:49 ` Avi Kivity
2011-08-09 14:54 ` Thomas Fjellstrom
2011-08-09 15:01 ` Thomas Fjellstrom
2011-08-10 15:03 ` Philipp Hahn
2011-08-09 15:33 ` Nick
2011-08-11 6:38 ` Avi Kivity [this message]
2011-08-11 16:37 ` Thomas Fjellstrom
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