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From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] Re: qemu-kvm faster than qemu? |
Date: | Thu, 26 Aug 2010 07:54:26 -0500 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.11) Gecko/20100713 Lightning/1.0b1 Thunderbird/3.0.6 |
On 08/26/2010 02:59 AM, Gleb Natapov wrote:
On Thu, Aug 26, 2010 at 09:53:27AM +0200, Gerd Hoffmann wrote:Hi,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.Didn't try win7, but for winxp it is a *huge* difference.On which HW? My guess is this is because of tpr patching.
Does Windows 7 hit the TPR heavily? I thought all modern versions of Windows significantly reduced their interactions with the TPR.
Regards, Anthony Liguori
-- Gleb.
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