From: Avi Kivity <avi@redhat.com>
To: Javier Guerra <javier@guerrag.com>
Cc: Andrew Theurer <habanero@linux.vnet.ibm.com>,
KVM list <kvm@vger.kernel.org>
Subject: Re: Windows Server 2008 VM performance
Date: Wed, 03 Jun 2009 00:48:43 +0300 [thread overview]
Message-ID: <4A259E3B.6020408@redhat.com> (raw)
In-Reply-To: <90eb1dc70906021445o13f63beeucc05776e82c7c3c9@mail.gmail.com>
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.
Worth trying.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
next prev parent reply other threads:[~2009-06-02 21:48 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 [this message]
2009-06-02 22:15 ` Ryan Harper
2009-06-03 14:21 ` Andrew Theurer
2009-06-03 17:38 ` Marcelo Tosatti
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