From: Paolo Bonzini <pbonzini@redhat.com>
To: kvm@vger.kernel.org
Subject: Re: Live migration locks up 3.2 guests in do_timer(ticks ~ 500000)
Date: Mon, 08 Sep 2014 10:18:06 +0200 [thread overview]
Message-ID: <540D663E.2070905@redhat.com> (raw)
In-Reply-To: <20140908055416.GE23305@hydra.tuxags.com>
Il 08/09/2014 07:54, Matt Mullins ha scritto:
> It also seems to happen reliably when the guest has been running for a while;
> it's easily reproducible with guests that have been up ~1 day, and I've
> reproduced it in VMs with an uptime of ~20 hours. I haven't yet figured out a
> lower-bound, which makes the testing cycle a little longer for me.
>
> The guests that I reliably reproduce this on are Ubuntu 12.04 guests running
> the current 3.2 kernel that Canonical distributes. Recent Fedora kernels
> (3.14+, IIRC) don't seem to busy-spin this way, though I haven't tested this
> case exhaustively, and I haven't written down very good notes for the tests I
> have done with Fedora.
What host are you running?
Paolo
next prev parent reply other threads:[~2014-09-08 8:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-08 5:54 Live migration locks up 3.2 guests in do_timer(ticks ~ 500000) Matt Mullins
2014-09-08 8:18 ` Paolo Bonzini [this message]
2014-09-08 15:56 ` Matt Mullins
2014-09-08 16:18 ` Paolo Bonzini
2014-09-08 16:39 ` Matt Mullins
2014-09-10 6:53 ` Matt Mullins
2014-09-15 18:14 ` Matt Mullins
2014-09-16 8:42 ` Paolo Bonzini
2014-10-27 18:42 ` Matt Mullins
2014-10-28 9:04 ` Paolo Bonzini
2014-11-11 19:57 ` Matt Mullins
2014-11-12 8:59 ` Paolo Bonzini
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