linux-kernel - Re: [ANNOUNCE] Native Linux KVM tool v2

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Message-ID: <BANLkTi=krV7p9gT3E064aVoUCToVyZoL6w@mail.gmail.com>
Date:	Thu, 16 Jun 2011 17:48:21 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:	Avi Kivity <avi@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Prasad Joshi <prasadjoshi124@...il.com>,
	Sasha Levin <levinsasha928@...il.com>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	Asias He <asias.hejun@...il.com>
Subject: Re: [ANNOUNCE] Native Linux KVM tool v2

On Wed, Jun 15, 2011 at 6:53 PM, Pekka Enberg <penberg@...nel.org> wrote:
> - Fast QCOW2 image read-write support beating Qemu in fio benchmarks. See the
>  following URL for test result details: https://gist.github.com/1026888

It turns out we were benchmarking the wrong guest kernel version for
qemu-kvm which is why it performed so much worse. Here's a summary of
qemu-kvm beating tools/kvm:

https://raw.github.com/gist/1029359/9f9a714ecee64802c08a3455971e410d5029370b/gistfile1.txt

I'd ask for a brown paper bag if I wasn't so busy eating my hat at the moment.

                        Pekka
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