<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div>Adding Bob Sibley to this thread. <br></div><div><br></div><div><br></div><hr id="zwchr"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="border-left: 2px solid #1010FF; margin-left: 5px; padding-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" <sdainard@miovision.com><br><b>To: </b>"Andrew Cathrow" <acathrow@redhat.com><br><b>Cc: </b>"Ronen Hod" <rhod@redhat.com>, "users" <users@ovirt.org>, "Sanjay Rao" <srao@redhat.com>, "Itamar Heim" <iheim@redhat.com><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 guest<br><div><br></div><div dir="ltr">Not sure what a good method to bench this would be, but:<div><br></div><div>An NFS mount point on virt host:</div><div><div>[root@ovirt001 iso-store]# dd if=/dev/zero of=test1 bs=4k count=100000</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></div><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 iso-store]# dd if=/dev/zero of=test bs=4k count=100000</div><div>100000+0 records in</div><div>100000+0 records out</div><div>409600000 bytes (410 MB) copied, 3.06743 s, 134 MB/s</div></div><div><br></div><div>Gluster mount point on gluster server:</div><div><div>[root@gluster1 iso-store]# dd if=/dev/zero of=test bs=4k count=100000</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 are 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 advantage using ssd storage for glusterfs.</div><div><br></div><div>Does anyone have a hardware reference design for glusterfs as a backend for virt? Or is there a benchmark utility?</div></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr"><span style="font-family:arial,sans-serif;font-size:16px" data-mce-style="font-family: arial,sans-serif; font-size: 16px;"><strong>Steve Dainard </strong></span><span style="font-size:12px" data-mce-style="font-size: 12px;"></span><br> <span style="font-family:arial,sans-serif;font-size:12px" data-mce-style="font-family: arial,sans-serif; font-size: 12px;">IT Infrastructure Manager<br> <a href="http://miovision.com/" target="_blank" data-mce-href="http://miovision.com/">Miovision</a> | <em>Rethink Traffic</em><br> 519-513-2407 ex.250<br> 877-646-8476 (toll-free)<br> <br> <strong style="font-family:arial,sans-serif;font-size:13px;color:#999999" data-mce-style="font-family: arial,sans-serif; font-size: 13px; color: #999999;"><a href="http://miovision.com/blog" target="_blank" data-mce-href="http://miovision.com/blog">Blog</a> | </strong><span style="font-family: arial,sans-serif; font-size: 13px; color: #999999;" data-mce-style="font-family: arial,sans-serif; font-size: 13px; color: #999999;" color="#999999"><strong><a href="https://www.linkedin.com/company/miovision-technologies" target="_blank" data-mce-href="https://www.linkedin.com/company/miovision-technologies">LinkedIn</a> | <a href="https://twitter.com/miovision" target="_blank" data-mce-href="https://twitter.com/miovision">Twitter</a> | <a href="https://www.facebook.com/miovision" target="_blank" data-mce-href="https://www.facebook.com/miovision">Facebook</a></strong></span> </span><hr style="font-family:arial,sans-serif;font-size:13px;color:#333333;clear:both" data-mce-style="font-family: arial,sans-serif; font-size: 13px; color: #333333; clear: both;"><div style="color:#999999;font-family:arial,sans-serif;font-size:13px;padding-top:5px" data-mce-style="color: #999999; font-family: arial,sans-serif; font-size: 13px; padding-top: 5px;"><span style="font-family:arial,sans-serif;font-size:12px" data-mce-style="font-family: arial,sans-serif; font-size: 12px;">Miovision Technologies Inc. | 148 Manitou Drive, Suite 101, Kitchener, ON, Canada | N2C 1L3</span><br> <span style="font-family:arial,sans-serif;font-size:12px" data-mce-style="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 notify us immediately.</span></div></div></div><br><div><br></div><div class="gmail_quote">On Thu, Jan 23, 2014 at 7:18 PM, Andrew Cathrow <span dir="ltr"><<a href="mailto:acathrow@redhat.com" target="_blank" data-mce-href="mailto:acathrow@redhat.com">acathrow@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" data-mce-style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;"><div><div style="font-size:10pt;font-family:arial,helvetica,sans-serif" data-mce-style="font-size: 10pt; font-family: arial,helvetica,sans-serif;">Are 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 style="padding-left:5px;font-size:12pt;font-style:normal;margin-left:5px;font-family:Helvetica,Arial,sans-serif;text-decoration:none;font-weight:normal;border-left:2px solid #1010ff" data-mce-style="padding-left: 5px; font-size: 12pt; font-style: normal; margin-left: 5px; font-family: Helvetica,Arial,sans-serif; text-decoration: none; font-weight: normal; border-left: 2px solid #1010ff;"><b>From: </b>"Steve Dainard" <<a href="mailto:sdainard@miovision.com" target="_blank" data-mce-href="mailto:sdainard@miovision.com">sdainard@miovision.com</a>><br><b>To: </b>"Itamar Heim" <<a href="mailto:iheim@redhat.com" target="_blank" data-mce-href="mailto:iheim@redhat.com">iheim@redhat.com</a>><br> <b>Cc: </b>"Ronen Hod" <<a href="mailto:rhod@redhat.com" target="_blank" data-mce-href="mailto:rhod@redhat.com">rhod@redhat.com</a>>, "users" <<a href="mailto:users@ovirt.org" target="_blank" data-mce-href="mailto:users@ovirt.org">users@ovirt.org</a>>, "Sanjay Rao" <<a href="mailto:srao@redhat.com" target="_blank" data-mce-href="mailto:srao@redhat.com">srao@redhat.com</a>><br> <b>Sent: </b>Thursday, January 23, 2014 4:56:58 PM<br><b>Subject: </b>Re: [Users] Extremely poor disk access speeds in Windows guest<div><div class="h5"><br><div><br></div><div dir="ltr">I have two options, virtio and virtio-scsi.<div><br></div><div>I was using virtio, and have also attempted virtio-scsi on another Windows guest with the same results.</div><div><br></div><div>Using the newest drivers, virtio-win-0.1-74.iso.</div></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr"><span style="font-family:arial,sans-serif;font-size:16px" data-mce-style="font-family: arial,sans-serif; font-size: 16px;"><strong>Steve Dainard </strong></span><span style="font-size:12px" data-mce-style="font-size: 12px;"></span><br> <span style="font-family:arial,sans-serif;font-size:12px" data-mce-style="font-family: arial,sans-serif; font-size: 12px;">IT Infrastructure Manager<br> <a href="http://miovision.com/" target="_blank" data-mce-href="http://miovision.com/">Miovision</a> | <em>Rethink Traffic</em><br> <a href="tel:519-513-2407" target="_blank" data-mce-href="tel:519-513-2407">519-513-2407</a> ex.250<br> <a href="tel:877-646-8476" target="_blank" data-mce-href="tel:877-646-8476">877-646-8476</a> (toll-free)<br> <br> <strong style="font-family:arial,sans-serif;font-size:13px;color:#999999" data-mce-style="font-family: arial,sans-serif; font-size: 13px; color: #999999;"><a href="http://miovision.com/blog" target="_blank" data-mce-href="http://miovision.com/blog">Blog</a> | </strong><span style="font-family: arial,sans-serif; font-size: 13px; color: #999999;" data-mce-style="font-family: arial,sans-serif; font-size: 13px; color: #999999;" color="#999999"><strong><a href="https://www.linkedin.com/company/miovision-technologies" target="_blank" data-mce-href="https://www.linkedin.com/company/miovision-technologies">LinkedIn</a> | <a href="https://twitter.com/miovision" target="_blank" data-mce-href="https://twitter.com/miovision">Twitter</a> | <a href="https://www.facebook.com/miovision" target="_blank" data-mce-href="https://www.facebook.com/miovision">Facebook</a></strong></span> </span><hr style="font-family:arial,sans-serif;font-size:13px;color:#333333;clear:both" data-mce-style="font-family: arial,sans-serif; font-size: 13px; color: #333333; clear: both;"><div style="color:#999999;font-family:arial,sans-serif;font-size:13px;padding-top:5px" data-mce-style="color: #999999; font-family: arial,sans-serif; font-size: 13px; padding-top: 5px;"><span style="font-family:arial,sans-serif;font-size:12px" data-mce-style="font-family: arial,sans-serif; font-size: 12px;">Miovision Technologies Inc. | 148 Manitou Drive, Suite 101, Kitchener, ON, Canada | N2C 1L3</span><br> <span style="font-family:arial,sans-serif;font-size:12px" data-mce-style="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 notify us immediately.</span></div></div></div><br><div><br></div><div class="gmail_quote">On Thu, Jan 23, 2014 at 4:24 PM, Itamar Heim <span dir="ltr"><<a href="mailto:iheim@redhat.com" target="_blank" data-mce-href="mailto:iheim@redhat.com">iheim@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" data-mce-style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;"><div>On 01/23/2014 07:46 PM, Steve Dainard wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" data-mce-style="margin: 0 0 0 .8ex; border-left: 1px #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="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" data-mce-style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;"><div><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> ______________________________<span style="text-decoration: underline;" data-mce-style="text-decoration: underline;"></span>_________________<br> Users mailing list<br> <a href="mailto:Users@ovirt.org" target="_blank" data-mce-href="mailto:Users@ovirt.org">Users@ovirt.org</a><br> <a href="http://lists.ovirt.org/mailman/listinfo/users" target="_blank" data-mce-href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/<span style="text-decoration: underline;" data-mce-style="text-decoration: underline;"></span>mailman/listinfo/users</a><br> <br></blockquote><br></blockquote></div><br></div><br>_______________________________________________<br>Users mailing list<br><a href="mailto:Users@ovirt.org" target="_blank" data-mce-href="mailto:Users@ovirt.org">Users@ovirt.org</a><br><a href="http://lists.ovirt.org/mailman/listinfo/users" target="_blank" data-mce-href="http://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailman/listinfo/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="x"></span>Sanjay Rao <br>Principal Performance Engineer Phone: 978-392-2479 <br>Red Hat, Inc. FAX: 978-392-1001 <br>314 Littleton Road Email: srao@redhat.com <br>Westford, MA 01886 <span name="x"></span><br></div></div></body></html>