From: Paolo Bonzini <pbonzini@redhat.com>
To: Wanpeng Li <wanpeng.li@linux.intel.com>,
Xiao Guangrong <xiaoguangrong.eric@gmail.com>,
KVM list <kvm@vger.kernel.org>
Subject: Re: A question about HTL VM-Exit handling time
Date: Tue, 28 Oct 2014 11:16:17 +0100 [thread overview]
Message-ID: <544F6CF1.5080501@redhat.com> (raw)
In-Reply-To: <20141027235245.GC27081@kernel>
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 interrupts seem to be really few.
Paolo
next prev parent reply other threads:[~2014-10-28 10:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-16 8:15 A question about HTL VM-Exit handling time Wu, Feng
2014-10-21 18:39 ` Paolo Bonzini
2014-10-23 4:56 ` Wu, Feng
2014-10-23 12:23 ` Paolo Bonzini
2014-10-24 1:14 ` Wu, Feng
2014-10-27 23:52 ` Wanpeng Li
2014-10-28 10:16 ` Paolo Bonzini [this message]
2014-10-28 7:46 ` Christian Borntraeger
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