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Re: [Xen-users] Re: Xen Disk I/O performance vs native performance: Xen

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Subject: Re: [Xen-users] Re: Xen Disk I/O performance vs native performance: Xen I/O is definitely super super super slow
From: Javier Guerra Giraldez <javier@xxxxxxxxxxx>
Date: Fri, 13 Feb 2009 07:58:42 -0500
Cc: "Fajar A. Nugraha" <fajar@xxxxxxxxx>, DOGUET Emmanuel <Emmanuel.DOGUET@xxxxxxxx>
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DOGUET Emmanuel wrote:
> and this processes is running :
> root      5671  0.0  0.1  75412  6324 ?        Sl   16:33   0:00
> /usr/lib64/xen/bin/qemu-dm -M xenpv -d 1 -domain-name dom-v1 -vnc
> -vncunused root      6559  0.0  0.1  75412  6328 ?        Sl   16:33   0:00
> /usr/lib64/xen/bin/qemu-dm -M xenpv -d 2 -domain-name dom-v2 -vnc
> -vncunused

obviously your DomUs are HVM.  no wonder they're far slower than Dom0.

now, why are they HVM?... that's the question.


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