From: Avi Kivity <avi@redhat.com>
To: walt <w41ter@gmail.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: qemu-kvm faster than qemu?
Date: Sun, 29 Aug 2010 18:02:47 +0300 [thread overview]
Message-ID: <4C7A7697.3060407@redhat.com> (raw)
In-Reply-To: <i56o0g$b27$1@dough.gmane.org>
On 08/27/2010 12:57 AM, walt wrote:
>
>> Also try qemu-kvm with -no-kvm-irqchip. I can't believe an in-kernel
>> lapic would make this much of a difference with windows 7 but it's
>> worth trying.
>
> Using that flag wipes out the difference entirely: both come in at
> about 65 seconds.
>
> I also tried xp-32 running on the same two kvm64 virtual machines,
> with slightly
> different results:
>
> qemu-kvm: 35 seconds (65 seconds using -no-kvm-irqchip, a huge
> disadvantage)
> qemu: 58 seconds
>
> Anything unexpected in these results?
Looks like kernel irqchip is the cause for the difference, which isn't
too surprising.
--
error compiling committee.c: too many arguments to function
prev parent reply other threads:[~2010-08-29 17:10 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-25 19:37 [Qemu-devel] qemu-kvm faster that qemu? walt
2010-08-25 19:48 ` Anthony Liguori
2010-08-25 23:09 ` [Qemu-devel] Re: qemu-kvm faster than qemu? walt
2010-08-25 23:28 ` Anthony Liguori
2010-08-26 7:53 ` Gerd Hoffmann
2010-08-26 7:59 ` Gleb Natapov
2010-08-26 9:59 ` Gerd Hoffmann
2010-08-26 10:24 ` Alexander Graf
2010-08-26 10:25 ` Gleb Natapov
2010-08-26 11:56 ` Avi Kivity
2010-08-26 12:54 ` Anthony Liguori
2010-08-26 12:57 ` Gleb Natapov
2010-08-26 21:57 ` walt
2010-08-29 15:02 ` Avi Kivity [this message]
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