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Re: [Qemu-devel] [PATCH 0/2] Open disk images with O_DIRECT
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From: |
Samuel Thibault |
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Subject: |
Re: [Qemu-devel] [PATCH 0/2] Open disk images with O_DIRECT |
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Date: |
Wed, 28 Nov 2007 15:17:01 +0000 |
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User-agent: |
Mutt/1.5.12-2006-07-14 |
Daniel P. Berrange, le Wed 28 Nov 2007 15:08:20 +0000, a écrit :
> > sometimes it is not because the guest is not so i/o friendly
> > and hence using the host page/buffer cache is useful.
>
> I don't buy that - all OS already do I/O caching because its useful even
> on baremetal.
Well, I can see the difference when installing windows for instance.
Samuel