From: Eric B Munson <emunson@mgebm.net>
To: Glauber Costa <glommer@redhat.com>
Cc: 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>,
Avi Kivity <avi@redhat.com>,
Anthony Liguori <aliguori@us.ibm.com>,
Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [PATCH v3 5/9] KVM-HV: use schedstats to calculate steal time
Date: Wed, 29 Jun 2011 17:56:42 -0400 [thread overview]
Message-ID: <20110629215642.GD3557@mgebm.net> (raw)
In-Reply-To: <1309361388-30163-6-git-send-email-glommer@redhat.com>
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On Wed, 29 Jun 2011, Glauber Costa wrote:
> SCHEDSTATS provide a precise source of information about time tasks
> spent on a runqueue, but not running (among other things). It is
> specially useful for the steal time implementation, because it doesn't
> record halt time at all.
>
> To avoid a hard dependency on schedstats, since it is possible one won't
> want to record statistics about all processes running, the previous method
> of time measurement on put/load vcpu is kept for !SCHEDSTATS.
>
> Signed-off-by: Glauber Costa <glommer@redhat.com>
> CC: Rik van Riel <riel@redhat.com>
> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
> CC: Peter Zijlstra <peterz@infradead.org>
> CC: Avi Kivity <avi@redhat.com>
> CC: Anthony Liguori <aliguori@us.ibm.com>
> CC: Eric B Munson <emunson@mgebm.net>
> CC: Marcelo Tosatti <mtosatti@redhat.com>
Tested-by: Eric B Munson <emunson@mgebm.net>
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next prev parent reply other threads:[~2011-06-29 21:56 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
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 [this message]
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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