From: Avi Kivity <avi@redhat.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Andrew Theurer <habanero@linux.vnet.ibm.com>,
kvm-devel <kvm@vger.kernel.org>
Subject: Re: KVM performance vs. Xen
Date: Thu, 30 Apr 2009 16:59:28 +0300 [thread overview]
Message-ID: <49F9AEC0.2060909@redhat.com> (raw)
In-Reply-To: <49F9AB64.20506@codemonkey.ws>
Anthony Liguori wrote:
> Avi Kivity wrote:
>>>
>>> 1) I'm seeing about 2.3% in scheduler functions [that I recognize].
>>> Does that seems a bit excessive?
>>
>> Yes, it is. If there is a lot of I/O, this might be due to the
>> thread pool used for I/O.
>
> This is why I wrote the linux-aio patch. It only reduced CPU
> consumption by about 2% although I'm not sure if that's absolute or
> relative. Andrew?
Was that before or after the entire path was made copyless?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-04-30 13:59 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-29 14:41 KVM performance vs. Xen Andrew Theurer
2009-04-29 15:20 ` Nakajima, Jun
2009-04-29 15:33 ` Andrew Theurer
2009-04-30 8:56 ` Avi Kivity
2009-04-30 12:49 ` Andrew Theurer
2009-04-30 13:02 ` Avi Kivity
2009-04-30 13:44 ` Andrew Theurer
2009-04-30 13:47 ` Anthony Liguori
2009-04-30 13:52 ` Avi Kivity
2009-04-30 13:45 ` Anthony Liguori
2009-04-30 13:53 ` Avi Kivity
2009-04-30 15:08 ` Anthony Liguori
2009-04-30 13:59 ` Avi Kivity [this message]
2009-04-30 14:04 ` Andrew Theurer
2009-04-30 15:11 ` Anthony Liguori
2009-04-30 15:19 ` Avi Kivity
2009-04-30 15:59 ` Anthony Liguori
2009-05-01 0:40 ` Andrew Theurer
2009-05-03 16:20 ` Avi Kivity
2009-04-30 15:09 ` Anthony Liguori
2009-04-30 16:41 ` Marcelo Tosatti
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