[Users] Extremely poor disk access speeds in Windows guest

[Steve Dainard]

I have two options, virtio and virtio-scsi.

I was using virtio, and have also attempted virtio-scsi on another Windows
guest with the same results.

Using the newest drivers, virtio-win-0.1-74.iso.

*Steve Dainard *
IT Infrastructure Manager
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On Thu, Jan 23, 2014 at 4:24 PM, Itamar Heim <iheim at redhat.com> wrote:

> On 01/23/2014 07:46 PM, Steve Dainard wrote:
>
>> Backing Storage: Gluster Replica
>> Storage Domain: NFS
>> Ovirt Hosts: CentOS 6.5
>> Ovirt version: 3.3.2
>> Network: GigE
>> # of VM's: 3 - two Linux guests are idle, one Windows guest is
>> installing updates.
>>
>> I've installed a Windows 2008 R2 guest with virtio disk, and all the
>> drivers from the latest virtio iso. I've also installed the spice agent
>> drivers.
>>
>> Guest disk access is horribly slow, Resource monitor during Windows
>> updates shows Disk peaking at 1MB/sec (scale never increases) and Disk
>> Queue Length Peaking at 5 and looks to be sitting at that level 99% of
>> the time. 113 updates in Windows has been running solidly for about 2.5
>> hours and is at 89/113 updates complete.
>>
>
> virtio-block or virtio-scsi?
> which windows guest driver version for that?
>
>
>> I can't say my Linux guests are blisteringly fast, but updating a guest
>> from RHEL 6.3 fresh install to 6.5 took about 25 minutes.
>>
>> If anyone has any ideas, please let me know - I haven't found any tuning
>> docs for Windows guests that could explain this issue.
>>
>> Thanks,
>>
>>
>> *Steve Dainard *
>>
>>
>>
>> _______________________________________________
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>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
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