From: Avi Kivity <avi@redhat.com>
To: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>, KVM <kvm@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: KVM: Softlockups in guests while running kernbench
Date: Thu, 10 May 2012 12:22:00 +0300 [thread overview]
Message-ID: <4FAB88B8.5060203@redhat.com> (raw)
In-Reply-To: <87wr4kjvtk.fsf@abhimanyu.in.ibm.com>
On 05/10/2012 11:15 AM, Nikunj A Dadhania wrote:
> I am running a 3.4.0-rc4 based kernel(commit: af3a3ab2), guest config
> attached.
>
> During my tests, I saw few softlockups inside the guests while running
> kernbench inside the guest. I can reproduce this repeatedly.
>
> Test Setup:
>
> - Create 4 VMs (8vcpu, 1GB RAM)
> - Run kernbench inside each guests (kernbench -f -M -H -o 16) in parallel
>
>
How overcommitted are you? What does the host hardware look like? Is
there any load on the host?
The traces themselves always point a couple of instructions after
interrupts are enabled. Can you post a few more?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-05-10 9:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-10 8:15 KVM: Softlockups in guests while running kernbench Nikunj A Dadhania
2012-05-10 8:51 ` Nikunj A Dadhania
2012-05-10 9:22 ` Avi Kivity [this message]
2012-05-10 10:09 ` Nikunj A Dadhania
2012-05-10 14:46 ` Nikunj A Dadhania
2012-05-11 6:38 ` Nikunj A Dadhania
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