11:01 p.m.
Not sure what a good method to bench this would be, but:
An NFS mount point on virt host:
[root@ovirt001 iso-store]# dd if=/dev/zero of=test1 bs=4k count=100000
100000+0 records in
100000+0 records out
409600000 bytes (410 MB) copied, 3.95399 s, 104 MB/s
Raw brick performance on gluster server (yes, I know I shouldn't write
directly to the brick):
[root@gluster1 iso-store]# dd if=/dev/zero of=test bs=4k count=100000
100000+0 records in
100000+0 records out
409600000 bytes (410 MB) copied, 3.06743 s, 134 MB/s
Gluster mount point on gluster server:
[root@gluster1 iso-store]# dd if=/dev/zero of=test bs=4k count=100000
100000+0 records in
100000+0 records out
409600000 bytes (410 MB) copied, 19.5766 s, 20.9 MB/s
The storage servers are a bit older, but are both dual socket quad core
opterons with 4x 7200rpm drives.
I'm in the process of setting up a share from my desktop and I'll see if I
can bench between the two systems. Not sure if my ssd will impact the
tests, I've heard there isn't an advantage using ssd storage for glusterfs.
Does anyone have a hardware reference design for glusterfs as a backend for
virt? Or is there a benchmark utility?
*Steve Dainard *
IT Infrastructure Manager
Miovision <http://miovision.com/> | *Rethink Traffic*
519-513-2407 ex.250
877-646-8476 (toll-free)
*Blog <http://miovision.com/blog> | **LinkedIn
<https://www.linkedin.com/company/miovision-technologies> | Twitter
<https://twitter.com/miovision> | Facebook
<https://www.facebook.com/miovision>*
------------------------------
Miovision Technologies Inc. | 148 Manitou Drive, Suite 101, Kitchener, ON,
Canada | N2C 1L3
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On Thu, Jan 23, 2014 at 7:18 PM, Andrew Cathrow <acathrow(a)redhat.com> wrote:
Are we sure that the issue is the guest I/O - what's the raw
performance
on the host accessing the gluster storage?
------------------------------
*From: *"Steve Dainard" <sdainard(a)miovision.com>
*To: *"Itamar Heim" <iheim(a)redhat.com>
*Cc: *"Ronen Hod" <rhod(a)redhat.com>, "users"
<users(a)ovirt.org>, "Sanjay
Rao" <srao(a)redhat.com>
*Sent: *Thursday, January 23, 2014 4:56:58 PM
*Subject: *Re: [Users] Extremely poor disk access speeds in Windows guest
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
Miovision <http://miovision.com/> | *Rethink Traffic*
519-513-2407 ex.250
877-646-8476 (toll-free)
*Blog <http://miovision.com/blog> | **LinkedIn
<https://www.linkedin.com/company/miovision-technologies> | Twitter
<https://twitter.com/miovision> | Facebook
<https://www.facebook.com/miovision>*
------------------------------
Miovision Technologies Inc. | 148 Manitou Drive, Suite 101, Kitchener,
ON, Canada | N2C 1L3
This e-mail may contain information that is privileged or confidential. If
you are not the intended recipient, please delete the e-mail and any
attachments and notify us immediately.
On Thu, Jan 23, 2014 at 4:24 PM, Itamar Heim <iheim(a)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 *
>>
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users(a)ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
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