From: Ryan Harper <ryanh@us.ibm.com>
To: Avi Kivity <avi@redhat.com>
Cc: Javier Guerra <javier@guerrag.com>,
Andrew Theurer <habanero@linux.vnet.ibm.com>,
KVM list <kvm@vger.kernel.org>
Subject: Re: Windows Server 2008 VM performance
Date: Tue, 2 Jun 2009 17:15:55 -0500 [thread overview]
Message-ID: <20090602221555.GT6411@us.ibm.com> (raw)
In-Reply-To: <4A259E3B.6020408@redhat.com>
* Avi Kivity <avi@redhat.com> [2009-06-02 16:49]:
> Javier Guerra wrote:
> >On Tue, Jun 2, 2009 at 4:38 PM, Avi Kivity <avi@redhat.com> wrote:
> >
> >>Andrew Theurer wrote:
> >>
> >>>P.S. Here is the qemu cmd line for the windows VMs:
> >>>/usr/local/bin/qemu-system-x86_64 -name newcastle-xdbt01 -hda
> >>>/dev/disk/by-id/scsi-3600a0b80000f1eb10000074f4a02b08a
> >>>
> >>Use: -drive /dev/very-long-name,cache=none instead of -hda to disable the
> >>host cache. Won't make much of a differnence for 5 MB/s though.
> >>
> >
> >would emulating SCSI instead of IDE help while we hope and wait for
> >virtio_block drivers? (and better virtio_net).
> >
>
> I don't think the scsi emulation currently supports command parallelism,
> but I could be wrong.
>
For reads only, and I don't think 2k8 installs to lsi scsi acutally
complete.
--
Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
ryanh@us.ibm.com
next prev parent reply other threads:[~2009-06-02 22:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-02 21:05 Windows Server 2008 VM performance Andrew Theurer
2009-06-02 21:38 ` Avi Kivity
2009-06-02 21:45 ` Javier Guerra
2009-06-02 21:48 ` Avi Kivity
2009-06-02 22:15 ` Ryan Harper [this message]
2009-06-03 14:21 ` Andrew Theurer
2009-06-03 17:38 ` Marcelo Tosatti
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