7:46 p.m.
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.
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 *
11:24 p.m.
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
11:56 p.m.
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
>
>
2:18 a.m.
------=_Part_2033_7533037.1390522771631
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Are we sure that the issue is the guest I/O - what's the raw performance on the host
accessing the gluster storage?
----- Original Message -----
</div><div
class=3D"gmail_extra"><br clear=3D"all"><div><div
dir=3D"ltr"><s=
pan
style=3D"font-family:arial,sans-serif;font-size:16px"><strong>Steve&nbs=
p;Dainard </strong></span><span
style=3D"font-size:12px"></span><br <span
style=3D"font-family:arial,sans-serif;font-size:12px">IT Infrastructu=
re Manager<br <a
href=3D"http://miovision.com/"
target=3D"_blank">Miovision</a> | <em>Ret=
hink Traffic</em><br 519-513-2407 ex.250<br 877-646-8476 (toll-free)<br
<br <strong
style=3D"font-family:arial,sans-serif;font-size:13px;color:#999999"=
<hr
style=3D"font-family:arial,sans-serif;font-size:13px;color:#333333;clea=
r:both" <div
style=3D"color:#999999;font-family:arial,sans-serif;font-size:13px;pad=
ding-top:5px" =09<span
style=3D"font-family:arial,sans-serif;font-size:12px">Miovision Te=
chnologies Inc. | 148 Manitou Drive, Suite 101, Kitchener, ON, Canada |&nbs=
p;N2C 1L3</span><br =09<span
style=3D"font-family:arial,sans-serif;font-size:12px">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 no=
tify us immediately.</span></div
</div></div <br><br><div
class=3D"gmail_quote">On Thu, Jan 23, 2014 at 4:24 PM, Itamar =
Heim <span dir=3D"ltr"><<a
href=3D"mailto:iheim@redhat.com" target=3D"_b=
lank">iheim(a)redhat.com</a>&gt;</span>
wrote:<br><blockquote class=3D"gmail_=
quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1=
ex" <div class=3D"im">On
01/23/2014 07:46 PM, Steve Dainard wrote:<br
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0
.8ex;border-left:1p=
x #ccc solid;padding-left:1ex" Backing
Storage: Gluster Replica<br Storage Domain: NFS<br Ovirt Hosts: CentOS 6.5<br Ovirt
version: 3.3.2<br Network: GigE<br # of VM's: 3 - two Linux guests are idle, one Windows guest
is<br installing updates.<br <br I've installed a Windows 2008 R2
guest with virtio disk, and all the<br drivers
from the latest virtio iso. I've also installed the spice agent<br drivers.<br
<br Guest disk access is horribly slow,
Resource monitor during Windows<br updates
shows Disk peaking at 1MB/sec (scale never increases) and Disk<br Queue Length Peaking at 5 and looks to be sitting at that level
99% of<br the time. 113 updates in Windows has
been running solidly for about 2.5<br hours and
is at 89/113 updates complete.<br
</blockquote <br></div virtio-block or virtio-scsi?<br which
windows guest driver version for that?<br
<br <blockquote
class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div class=3D"im" <br I can't say my Linux guests are
blisteringly fast, but updating a guest<br from RHEL
6.3 fresh install to 6.5 took about 25 minutes.<br
<br If anyone has any ideas, please let
me know - I haven't found any tuning<br=
docs for Windows guests that could explain this
issue.<br <br
Thanks,<br <br
<br></div *Steve Dainard *<br <br <br
<br
______________________________<u></u>_________________<br Users mailing list<br <a
href=3D"mailto:Users@ovirt.org"
target=3D"_blank">Users(a)ovirt.org</a><br=
<a
href=3D"http://lists.ovirt.org/mailman/listinfo/users"
target=3D"_blank"=
>http://lists.ovirt.org/<u></u>mailman/listinfo/users</a><br <br </blockquote <br
</blockquote></div><br></div
<br>_______________________________________________<br>Users mailing
list<b=
r>Users@ovirt.org<br>http://lists.ovirt.org/mailman/listinfo/users<br></blo=
ckquote><br></div></body></html
------=_Part_2033_7533037.1390522771631--
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 | Rethink Traffic
519-513-2407 ex.250
877-646-8476 (toll-free)
Blog | LinkedIn | Twitter | Facebook
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
>
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
------=_Part_2033_7533037.1390522771631
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable
<html><head><style type=3D'text/css'>p { margin: 0;
}</style></head><body><=
div style=3D'font-family: arial,helvetica,sans-serif; font-size: 10pt; colo=
r: #000000'>Are we sure that the issue is the guest I/O - what's the raw pe=
rformance on the host accessing the gluster storage?<br><br><hr
id=3D"zwchr=
"><blockquote style=3D"border-left:2px solid
#1010FF;margin-left:5px;paddin=
g-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:=
none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From:
</b>"=
Steve Dainard" &lt;sdainard(a)miovision.com&gt;<br><b>To:
</b>"Itamar Heim" &=
lt;iheim(a)redhat.com&gt;<br><b>Cc: </b>"Ronen Hod"
&lt;rhod(a)redhat.com&gt;, =
"users" &lt;users(a)ovirt.org&gt;, "Sanjay Rao"
&lt;srao(a)redhat.com&gt;<br><b=
Sent: </b>Thursday, January 23, 2014 4:56:58
PM<br><b>Subject: </b>Re: [Us=
ers] Extremely poor disk access
speeds in Windows guest<br><br><div dir=3D"=
ltr">I have two options, virtio and
virtio-scsi.<div><br></div><div>I was u=
sing virtio, and have also attempted virtio-scsi on another Windows guest w=
ith the same results.</div><div><br></div><div>Using the
newest drivers, vi=
rtio-win-0.1-74.iso.</div<a href=3D"http://miovision.com/blog"
target=3D"_blank">Blog</a> | &=
nbsp;</strong><font color=3D"#999999"
style=3D"font-family:arial,sans-serif=
;font-size:13px"><strong><a
href=3D"https://www.linkedin.com/company/miovis=
ion-technologies"
target=3D"_blank">LinkedIn</a> | <a
href=
=3D"https://twitter.com/miovision"
target=3D"_blank">Twitter</a>  =
;| <a href=3D"https://www.facebook.com/miovision"
target=3D"_blank">F=
acebook</a></strong></font> </span
10:01 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
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 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
>>
>>
>
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
10:34 p.m.
------=_Part_10123618_874496395.1390595641747
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Adding Bob Sibley to this thread.
----- Original Message -----
From: "Steve Dainard" <sdainard(a)miovision.com>
To: "Andrew Cathrow" <acathrow(a)redhat.com>
Cc: "Ronen Hod" <rhod(a)redhat.com>, "users"
<users(a)ovirt.org>, "Sanjay Rao"
<srao(a)redhat.com>, "Itamar Heim" <iheim(a)redhat.com>
Sent: Friday, January 24, 2014 3:01:25 PM
Subject: Re: [Users] Extremely poor disk access speeds in Windows guest
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 | Rethink Traffic
519-513-2407 ex.250
877-646-8476 (toll-free)
Blog | LinkedIn | Twitter | Facebook
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 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 | Rethink Traffic
>
> > 519-513-2407 ex.250
>
> > 877-646-8476 (toll-free)
>
> > Blog | LinkedIn | Twitter | Facebook
>
> > 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
> > >
> >
>
> > _______________________________________________
>
> > Users mailing list
>
> > Users(a)ovirt.org
>
> > http://lists.ovirt.org/mailman/listinfo/users
>
--
Sanjay Rao
Principal Performance Engineer Phone: 978-392-2479
Red Hat, Inc. FAX: 978-392-1001
314 Littleton Road Email: srao(a)redhat.com
Westford, MA 01886
------=_Part_10123618_874496395.1390595641747
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable
<html><body><div style=3D"font-family: times new roman, new york,
times, se=
rif; font-size: 12pt; color: #000000"><div>Adding Bob Sibley to this
thread=
.
<br></div><div><br></div><div><br></div><hr
id=3D"zwchr"><blockquote styl=
e=3D"border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#=
000;font-weight:normal;font-style:normal;text-decoration:none;font-family:H=
elvetica,Arial,sans-serif;font-size:12pt;" data-mce-style=3D"border-left: 2=
px solid #1010FF; margin-left: 5px; padding-left: 5px; color: #000; font-we=
ight: normal; font-style: normal; text-decoration: none; font-family: Helve=
tica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Steve
Dainard" <s=
dainard(a)miovision.com&gt;<br><b>To: </b>"Andrew Cathrow"
<acathrow@redha=
t.com><br><b>Cc: </b>"Ronen Hod"
&lt;rhod(a)redhat.com&gt;, "users" <us=
ers(a)ovirt.org&gt;, "Sanjay Rao" &lt;srao(a)redhat.com&gt;,
"Itamar Heim" <=
iheim(a)redhat.com&gt;<br><b>Sent: </b>Friday, January 24, 2014
3:01:25 PM<br=
<b>Subject: </b>Re: [Users] Extremely poor disk access
speeds in Windows g=
uest<br><div><br></div><div
dir=3D"ltr">Not sure what a good method to benc=
h this would be, but:<div><br></div><div>An NFS mount point on
virt host:</=
div><div><div>[root@ovirt001 iso-store]# dd if=3D/dev/zero of=3Dtest1
bs=3D=
4k count=3D100000</div><div>100000+0 records in</div><div>100000+0
records =
out</div><div>409600000 bytes (410 MB) copied, 3.95399 s, 104
MB/s</div></d=
iv><div><br></div><div>Raw brick performance on gluster server
(yes, I know=
I shouldn't write directly to the
brick):</div><div><div>[root@gluster1 is=
o-store]# dd if=3D/dev/zero of=3Dtest bs=3D4k count=3D100000</div><div>1000=
00+0 records in</div><div>100000+0 records out</div><div>409600000
bytes (4=
10 MB) copied, 3.06743 s, 134
MB/s</div></div><div><br></div><div>Gluster m=
ount point on gluster server:</div><div><div>[root@gluster1 iso-store]#
dd =
if=3D/dev/zero of=3Dtest bs=3D4k count=3D100000</div><div>100000+0 records =
in</div><div>100000+0 records out</div><div>409600000 bytes (410
MB) copied=
, 19.5766 s, 20.9
MB/s</div></div><div><br></div><div>The storage
servers a=
re a bit older, but are both dual socket quad core opterons with 4x 7200rpm=
drives. </div><div><br></div><div>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 advanta=
ge using ssd storage for
glusterfs.</div><div><br></div><div>Does anyone ha=
ve a hardware reference design for glusterfs as a backend for virt? Or is t=
here a benchmark utility?</div></div><div
class=3D"gmail_extra"><br clear=
=3D"all"><div><div dir=3D"ltr"><span
style=3D"font-family:arial,sans-serif;=
font-size:16px" data-mce-style=3D"font-family: arial,sans-serif; font-size:=
16px;"><strong>Steve Dainard </strong></span><span
style=3D"font=
-size:12px" data-mce-style=3D"font-size: 12px;"></span><br>
<span style=3D"=
font-family:arial,sans-serif;font-size:12px" data-mce-style=3D"font-family:=
arial,sans-serif; font-size: 12px;">IT Infrastructure Manager<br> <a
href=
=3D"http://miovision.com/" target=3D"_blank"
data-mce-href=3D"http://miovis=
ion.com/">Miovision</a> | <em>Rethink Traffic</em><br>
519-513-2407 ex.250<=
br> 877-646-8476 (toll-free)<br> <br> <strong
style=3D"font-family:arial,sa=
ns-serif;font-size:13px;color:#999999" data-mce-style=3D"font-family: arial=
,sans-serif; font-size: 13px; color: #999999;"><a
href=3D"http://miovision.=
com/blog" target=3D"_blank"
data-mce-href=3D"http://miovision.com/blog">Blo=
g</a> | </strong><span style=3D"font-family:
arial,sans-serif; =
font-size: 13px; color: #999999;" data-mce-style=3D"font-family: arial,sans=
-serif; font-size: 13px; color: #999999;"
color=3D"#999999"><strong><a href=
=3D"https://www.linkedin.com/company/miovision-technologies"
target=3D"_bla=
nk" data-mce-href=3D"https://www.linkedin.com/company/miovision-technolo...
s">LinkedIn</a> | <a
href=3D"https://twitter.com/miovision=
" target=3D"_blank"
data-mce-href=3D"https://twitter.com/miovision">Twitter=
</a> | <a
href=3D"https://www.facebook.com/miovision" targ=
et=3D"_blank"
data-mce-href=3D"https://www.facebook.com/miovision">Facebook=
</a></strong></span> </span><hr
style=3D"font-family:arial,sans-serif;font-=
size:13px;color:#333333;clear:both" data-mce-style=3D"font-family: arial,sa=
ns-serif; font-size: 13px; color: #333333; clear: both;"><div
style=3D"colo=
r:#999999;font-family:arial,sans-serif;font-size:13px;padding-top:5px" data=
-mce-style=3D"color: #999999; font-family: arial,sans-serif; font-size: 13p=
x; padding-top: 5px;"><span
style=3D"font-family:arial,sans-serif;font-size=
:12px" data-mce-style=3D"font-family: arial,sans-serif; font-size:
12px;">M=
iovision Technologies Inc. | 148 Manitou Drive, Suite 101, Kitchener, ON, C=
anada | N2C 1L3</span><br> <span
style=3D"font-family:arial,sans-serif=
;font-size:12px" data-mce-style=3D"font-family: arial,sans-serif; font-size=
: 12px;">This e-mail may contain information that is privileged or confiden=
tial. If you are not the intended recipient, please delete the e-mail and a=
ny attachments and notify us
immediately.</span></div></div></div><br><div>=
<br></div><div class=3D"gmail_quote">On Thu, Jan 23, 2014 at
7:18 PM, Andre=
w Cathrow <span dir=3D"ltr"><<a
href=3D"mailto:acathrow@redhat.com" targ=
et=3D"_blank"
data-mce-href=3D"mailto:acathrow@redhat.com">acathrow@redhat.=
com</a>></span> wrote:<br><blockquote
class=3D"gmail_quote" style=3D"mar=
gin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" data-mce-style=
=3D"margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left:
1ex;"><d=
iv><div style=3D"font-size:10pt;font-family:arial,helvetica,sans-serif"
dat=
a-mce-style=3D"font-size: 10pt; font-family: arial,helvetica,sans-serif;">A=
re we sure that the issue is the guest I/O - what's the raw performance on =
the host accessing the gluster
storage?<br><div><br></div><hr><blockquote s=
tyle=3D"padding-left:5px;font-size:12pt;font-style:normal;margin-left:5px;f=
ont-family:Helvetica,Arial,sans-serif;text-decoration:none;font-weight:norm=
al;border-left:2px solid #1010ff" data-mce-style=3D"padding-left: 5px; font=
-size: 12pt; font-style: normal; margin-left: 5px; font-family: Helvetica,A=
rial,sans-serif; text-decoration: none; font-weight: normal; border-left: 2=
px solid #1010ff;"><b>From: </b>"Steve Dainard"
<<a href=3D"mailto:sdain=
ard(a)miovision.com" target=3D"_blank"
data-mce-href=3D"mailto:sdainard@miovi=
sion.com">sdainard(a)miovision.com</a>&gt;<br><b>To:
</b>"Itamar Heim" <<a=
href=3D"mailto:iheim@redhat.com" target=3D"_blank"
data-mce-href=3D"mailto=
:iheim@redhat.com">iheim@redhat.com</a>><br> <b>Cc:
</b>"Ronen Hod" <=
<a href=3D"mailto:rhod@redhat.com" target=3D"_blank"
data-mce-href=3D"mailt=
o:rhod@redhat.com">rhod@redhat.com</a>>, "users"
<<a href=3D"mailto:u=
sers(a)ovirt.org" target=3D"_blank"
data-mce-href=3D"mailto:users@ovirt.org">=
users(a)ovirt.org</a>&gt;, "Sanjay Rao" <<a
href=3D"mailto:srao@redhat.com=
" target=3D"_blank"
data-mce-href=3D"mailto:srao@redhat.com">srao@redhat.co=
m</a>><br> <b>Sent: </b>Thursday, January 23, 2014 4:56:58
PM<br><b>Subj=
ect: </b>Re: [Users] Extremely poor disk access speeds in Windows guest<div=
<div
class=3D"h5"><br><div><br></div><div
dir=3D"ltr">I have two options, =
virtio and
virtio-scsi.<div><br></div><div>I was using virtio, and have als=
o attempted virtio-scsi on another Windows guest with the same results.</di=
v><div><br></div><div>Using the newest drivers,
virtio-win-0.1-74.iso.</div=
</div><div class=3D"gmail_extra"><br
clear=3D"all"><div><div dir=3D"ltr"><=
span
style=3D"font-family:arial,sans-serif;font-size:16px" data-mce-style=
=3D"font-family: arial,sans-serif; font-size:
16px;"><strong>Steve Dai=
nard </strong></span><span style=3D"font-size:12px"
data-mce-style=3D"=
font-size: 12px;"></span><br> <span
style=3D"font-family:arial,sans-serif;f=
ont-size:12px" data-mce-style=3D"font-family: arial,sans-serif; font-size: =
12px;">IT Infrastructure Manager<br> <a
href=3D"http://miovision.com/" targ=
et=3D"_blank"
data-mce-href=3D"http://miovision.com/">Miovision</a> | <em>R=
ethink Traffic</em><br> <a href=3D"tel:519-513-2407"
target=3D"_blank" data=
-mce-href=3D"tel:519-513-2407">519-513-2407</a> ex.250<br> <a
href=3D"tel:8=
77-646-8476" target=3D"_blank"
data-mce-href=3D"tel:877-646-8476">877-646-8=
476</a> (toll-free)<br> <br> <strong
style=3D"font-family:arial,sans-serif;=
font-size:13px;color:#999999" data-mce-style=3D"font-family: arial,sans-ser=
if; font-size: 13px; color: #999999;"><a
href=3D"http://miovision.com/blog"=
target=3D"_blank"
data-mce-href=3D"http://miovision.com/blog">Blog</a>&a...
p; | </strong><span style=3D"font-family: arial,sans-serif;
font-size=
: 13px; color: #999999;" data-mce-style=3D"font-family: arial,sans-serif; f=
ont-size: 13px; color: #999999;" color=3D"#999999"><strong><a
href=3D"https=
://www.linkedin.com/company/miovision-technologies" target=3D"_blank"
data-=
mce-href=3D"https://www.linkedin.com/company/miovision-technologies&...
In</a> | <a
href=3D"https://twitter.com/miovision" target=
=3D"_blank"
data-mce-href=3D"https://twitter.com/miovision">Twitter</...
p; | <a href=3D"https://www.facebook.com/miovision"
target=3D"_b=
lank"
data-mce-href=3D"https://www.facebook.com/miovision">Faceboo...
rong></span> </span><hr
style=3D"font-family:arial,sans-serif;font-size:13p=
x;color:#333333;clear:both" data-mce-style=3D"font-family: arial,sans-serif=
; font-size: 13px; color: #333333; clear: both;"><div
style=3D"color:#99999=
9;font-family:arial,sans-serif;font-size:13px;padding-top:5px" data-mce-sty=
le=3D"color: #999999; font-family: arial,sans-serif; font-size: 13px; paddi=
ng-top: 5px;"><span
style=3D"font-family:arial,sans-serif;font-size:12px" d=
ata-mce-style=3D"font-family: arial,sans-serif; font-size: 12px;">Miovision=
Technologies Inc. | 148 Manitou Drive, Suite 101, Kitchener, ON, Canada |&=
nbsp;N2C 1L3</span><br> <span
style=3D"font-family:arial,sans-serif;font-si=
ze:12px" data-mce-style=3D"font-family: arial,sans-serif; font-size:
12px;"=
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 attac=
hments and notify us
immediately.</span></div></div></div><br><div><br></di=
v><div class=3D"gmail_quote">On Thu, Jan 23, 2014 at 4:24 PM, Itamar
Heim <=
span dir=3D"ltr"><<a href=3D"mailto:iheim@redhat.com"
target=3D"_blank" =
data-mce-href=3D"mailto:iheim@redhat.com">iheim@redhat.com</a>></span>
w=
rote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0
.8ex;borde=
r-left:1px #ccc solid;padding-left:1ex" data-mce-style=3D"margin: 0 0 0 .8e=
x; border-left: 1px #ccc solid; padding-left: 1ex;"><div>On 01/23/2014
07:4=
6 PM, Steve Dainard wrote:<br><blockquote class=3D"gmail_quote"
style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" data-mce-style=
=3D"margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;">Ba=
cking Storage: Gluster Replica<br> Storage Domain: NFS<br> Ovirt Hosts: Cen=
tOS 6.5<br> Ovirt version: 3.3.2<br> Network: GigE<br> # of VM's: 3
- two L=
inux guests are idle, one Windows guest is<br> installing updates.<br>
<br>=
I've installed a Windows 2008 R2 guest with virtio disk, and all the<br> d=
rivers from the latest virtio iso. I've also installed the spice agent<br> =
drivers.<br> <br> Guest disk access is horribly slow, Resource monitor duri=
ng Windows<br> updates shows Disk peaking at 1MB/sec (scale never increases=
) and Disk<br> Queue Length Peaking at 5 and looks to be sitting at that le=
vel 99% of<br> the time. 113 updates in Windows has been running solidly fo=
r about 2.5<br> hours and is at 89/113 updates
complete.<br></blockquote><b=
r></div>virtio-block or virtio-scsi?<br> which windows guest driver
version=
for that?<br> <br><blockquote class=3D"gmail_quote"
style=3D"margin:0 0 0 =
.8ex;border-left:1px #ccc solid;padding-left:1ex" data-mce-style=3D"margin:=
0 0 0 .8ex; border-left: 1px #ccc solid; padding-left:
1ex;"><div><br> I c=
an't say my Linux guests are blisteringly fast, but updating a guest<br> fr=
om RHEL 6.3 fresh install to 6.5 took about 25 minutes.<br> <br> If anyone =
has any ideas, please let me know - I haven't found any tuning<br> docs for=
Windows guests that could explain this issue.<br> <br> Thanks,<br>
<br> <b=
r></div>*Steve Dainard *<br> <br> <br> <br>
______________________________<=
span style=3D"text-decoration: underline;"
data-mce-style=3D"text-decoratio=
n: underline;"></span>_________________<br> Users mailing
list<br> <a href=
=3D"mailto:Users@ovirt.org" target=3D"_blank"
data-mce-href=3D"mailto:Users=
@ovirt.org">Users(a)ovirt.org</a><br> <a
href=3D"http://lists.ovirt.org/mailm=
an/listinfo/users" target=3D"_blank"
data-mce-href=3D"http://lists.ovirt.or=
g/mailman/listinfo/users">http://lists.ovirt.org/<span
style=3D"text-decora=
tion: underline;" data-mce-style=3D"text-decoration:
underline;"></span>mai=
lman/listinfo/users</a><br>
<br></blockquote><br></blockquote></div><br></d=
iv><br>_______________________________________________<br>Users mailing
lis=
t<br><a href=3D"mailto:Users@ovirt.org" target=3D"_blank"
data-mce-href=3D"=
mailto:Users@ovirt.org">Users@ovirt.org</a><br><a
href=3D"http://lists.ovir=
t.org/mailman/listinfo/users" target=3D"_blank"
data-mce-href=3D"http://lis=
ts.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailm...
o/users</a><br></div></div></blockquote><br></div></div></blockquote></div>=
<br></div></blockquote><div><br><br></div><div><br></div><div>--
<br></div>=
<div><span name=3D"x"></span>Sanjay Rao <br>Principal
Performance Engineer =
Phone: 978-3=
92-2479 <br>Red Hat, Inc.
=
 =
;FAX: 978-392-1001 <br>314 Littleton Road
 =
;
Ema=
il: srao(a)redhat.com <br>Westford, MA 01886 <span
name=3D"x"></span><br></di=
v></div></body></html>
------=_Part_10123618_874496395.1390595641747--
7:25 a.m.
On Sat, Jan 25, 2014 at 7:01 AM, Steve Dainard <sdainard(a)miovision.com>wrote:
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?
Check this thread out,
http://raobharata.wordpress.com/2012/10/29/qemu-glusterfs-native-integrat...
quite dated but I remember seeing similar figures.
In fact when I used FIO on a libgfapi mounted VM I got slightly faster
read/write speeds than on the physical box itself (I assume because of some
level of caching). On NFS it was close to half.. You'll probably get a
little more interesting results using FIO opposed to dd
*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 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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9:48 a.m.
On 01/25/2014 01:31 AM, Steve Dainard wrote:
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.
A block size of 4k is quite small so that the context switch overhead
involved with fuse would be more perceivable.
Would it be possible to increase the block size for dd and test?
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.
Do you have any pointers to this source of information? Typically
glusterfs performance for virtualization work loads is bound by the
slowest element in the entire stack. Usually storage/disks happen to be
the bottleneck and ssd storage does benefit glusterfs.
-Vijay
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>*
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ON, Canada | N2C 1L3
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On Thu, Jan 23, 2014 at 7:18 PM, Andrew Cathrow <acathrow(a)redhat.com
<mailto:acathrow@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
<mailto:sdainard@miovision.com>>
*To: *"Itamar Heim" <iheim(a)redhat.com
<mailto:iheim@redhat.com>>
*Cc: *"Ronen Hod" <rhod(a)redhat.com
<mailto:rhod@redhat.com>>,
"users" <users(a)ovirt.org <mailto:users@ovirt.org>>,
"Sanjay Rao"
<srao(a)redhat.com <mailto:srao@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 <tel:519-513-2407> ex.250
877-646-8476 <tel: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
<mailto:iheim@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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7 comments
6 participants
participants (6)
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Andrew Cathrow -
Andrew Lau -
Itamar Heim -
Sanjay Rao -
Steve Dainard -
Vijay Bellur