From: Eric B Munson <emunson@mgebm.net>
To: Avi Kivity <avi@redhat.com>
Cc: Glauber Costa <glommer@redhat.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Rik van Riel <riel@redhat.com>,
Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>,
Peter Zijlstra <peterz@infradead.org>,
Anthony Liguori <aliguori@us.ibm.com>
Subject: Re: [PATCH v3 2/9] KVM-HDR Add constant to represent KVM MSRs enabled bit
Date: Thu, 30 Jun 2011 08:59:38 -0400 [thread overview]
Message-ID: <20110630125938.GA4823@mgebm.net> (raw)
In-Reply-To: <4E0C3458.6090801@redhat.com>
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On Thu, 30 Jun 2011, Avi Kivity wrote:
> On 06/30/2011 12:56 AM, Eric B Munson wrote:
> >My mail provider seems to have dropped patch 1 of the series so I can't reply
> >directly to it, please add my Tested-by there as well.
>
> How did you test it then?
>
I built host and guest kernels with the patches and pinned a while(1) and the
CPU thread from qemu to CPU 2 on the host. I then started the same while(1)
process in guest and verified that I see ~50% steal time reported.
I then built 2.6.39 (just the code I had present) on the guest and time it
while it was competing with the while(1) on the host for CPU time. Next I
built the guest kernel with STEAL_TIME=N and reran the kernel compile to make
sure that there weren't any huge variations in performace.
Eric
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next prev parent reply other threads:[~2011-06-30 12:59 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-29 15:29 [PATCH v3 0/9] Steal time for KVM Glauber Costa
2011-06-29 15:29 ` [PATCH v3 1/9] introduce kvm_read_guest_cached Glauber Costa
2011-06-29 15:29 ` [PATCH v3 2/9] KVM-HDR Add constant to represent KVM MSRs enabled bit Glauber Costa
2011-06-29 21:56 ` Eric B Munson
2011-06-30 8:31 ` Avi Kivity
2011-06-30 12:59 ` Eric B Munson [this message]
2011-06-30 13:21 ` Glauber Costa
2011-06-30 14:13 ` Eric B Munson
2011-06-29 15:29 ` [PATCH v3 3/9] KVM-HDR: KVM Steal time implementation Glauber Costa
2011-06-29 21:56 ` Eric B Munson
2011-06-30 21:54 ` Peter Zijlstra
2011-06-29 15:29 ` [PATCH v3 4/9] KVM-HV: " Glauber Costa
2011-06-29 21:56 ` Eric B Munson
2011-06-29 15:29 ` [PATCH v3 5/9] KVM-HV: use schedstats to calculate steal time Glauber Costa
2011-06-29 21:56 ` Eric B Munson
2011-06-29 15:29 ` [PATCH v3 6/9] KVM-GST: Add a pv_ops stub for " Glauber Costa
2011-06-29 21:56 ` Eric B Munson
2011-06-29 15:29 ` [PATCH v3 7/9] KVM-GST: KVM Steal time accounting Glauber Costa
2011-06-29 21:57 ` Eric B Munson
2011-06-30 21:54 ` Peter Zijlstra
2011-07-01 2:53 ` Glauber Costa
2011-07-01 8:26 ` Peter Zijlstra
2011-06-30 21:54 ` Peter Zijlstra
2011-07-01 2:50 ` Glauber Costa
2011-06-30 21:54 ` Peter Zijlstra
2011-07-01 2:50 ` Glauber Costa
2011-07-01 8:25 ` Peter Zijlstra
2011-06-30 21:54 ` Peter Zijlstra
2011-06-29 15:29 ` [PATCH v3 8/9] KVM-GST: adjust scheduler cpu power Glauber Costa
2011-06-29 21:57 ` Eric B Munson
2011-06-30 21:54 ` Peter Zijlstra
2011-06-30 21:54 ` Peter Zijlstra
2011-06-30 21:54 ` Peter Zijlstra
2011-06-29 15:29 ` [PATCH v3 9/9] KVM-GST: KVM Steal time registration Glauber Costa
2011-06-29 21:57 ` Eric B Munson
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