Am 21.10.2014 20:39, schrieb Paolo Bonzini:
On 10/16/2014 10:15 AM, Wu, Feng wrote:
Hi folks,
I run kernel build in the guest and use perf kvm to get some VM-Exit result
as the following:
Analyze events for all VCPUs:
VM-EXITSamples Samples% Time% Min Time
On 10/28/2014 12:52 AM, Wanpeng Li wrote:
As you know, kernel build which Feng used is a CPU bound workload,
so why 22.28% samples is halt?
Because in a CPU bound workload you don't have many exits in the first
place. But there could also be some issues with the way he used perf.
213821
Hi Paolo,
On Tue, Oct 21, 2014 at 08:39:49PM +0200, Paolo Bonzini wrote:
On 10/16/2014 10:15 AM, Wu, Feng wrote:
Hi folks,
I run kernel build in the guest and use perf kvm to get some VM-Exit result
as the following:
Analyze events for all VCPUs:
VM-EXITSamples
Thanks for your answer, Paolo.
There is a general question for perf kvm. Do you know how the vmexit
handling time is measured? Such as what is the start point, and the
end point? If I got this information, I think I can better understand the
value of the handling time. Thanks a lot!
It is
-Original Message-
From: Paolo Bonzini [mailto:pbonz...@redhat.com]
Sent: Thursday, October 23, 2014 8:23 PM
To: Wu, Feng; kvm@vger.kernel.org
Cc: Xiao Guangrong
Subject: Re: A question about HTL VM-Exit handling time
Thanks for your answer, Paolo.
There is a general
-Original Message-
From: Paolo Bonzini [mailto:paolo.bonz...@gmail.com] On Behalf Of Paolo
Bonzini
Sent: Wednesday, October 22, 2014 2:40 AM
To: Wu, Feng; kvm@vger.kernel.org
Cc: Xiao Guangrong
Subject: Re: A question about HTL VM-Exit handling time
On 10/16/2014 10:15 AM
On 10/16/2014 10:15 AM, Wu, Feng wrote:
Hi folks,
I run kernel build in the guest and use perf kvm to get some VM-Exit result
as the following:
Analyze events for all VCPUs:
VM-EXITSamples Samples% Time% Min Time Max Time
A
MSR_WRITE
Hi folks,
I run kernel build in the guest and use perf kvm to get some VM-Exit result as
the following:
Analyze events for all VCPUs:
VM-EXITSamples Samples% Time% Min Time Max Time
A
MSR_WRITE361390857.53%18.97%5us 1362us
