You need a lot faster disks to keep up with all that random I/O. "Storage IO is average on 75 M/s Read Disk and 25 Write Disk. ( SSD > Raid )"
Ehm, are you running VM's on a DD box? Why on earth would you do that? /tony On 2018-04-18 14:09, Thomas Fecke wrote: > Atleast we found the Bottle neck. Our Data Domain is the Problem > > IOStat: > > Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s > avgrq-sz avgqu-sz await r_await w_await svctm %util > > sda 0,00 615,67 78,00 962,33 2125,33 37065,33 > 75,34 5,68 5,42 1,10 5,77 0,96 99,40 > > avg-cpu: %user %nice %system %iowait %steal %idle > > 0,00 0,00 1,44 22,63 0,00 75,93 > > Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s > avgrq-sz avgqu-sz await r_await w_await svctm %util > > sda 0,67 655,33 92,00 1033,67 2446,67 38390,67 > 72,56 5,66 5,06 1,83 5,35 0,88 99,50 > > Any Idea why we got so much write Requests? Its getting up to 2000. > > I guess the IO is from our Windows VM´s > > *From:*users-boun...@ovirt.org <users-boun...@ovirt.org> *On Behalf Of > *Thomas Fecke > *Sent:* Dienstag, 17. April 2018 16:18 > *To:* Roy Golan <rgo...@redhat.com> > *Cc:* users@ovirt.org > *Subject:* Re: [ovirt-users] Performance Issue > > Guest: Win 10 and 2016 > > Disk: VirtISCSI – Thin provision > > Domain: Single Data Domain – NFS 4 > > *From:*Roy Golan <rgo...@redhat.com> > *Sent:* Dienstag, 17. April 2018 12:58 > *To:* Thomas Fecke <thomas.fe...@eset.de> > *Cc:* users@ovirt.org > *Subject:* Re: [ovirt-users] Performance Issue > > On Tue, 17 Apr 2018 at 12:58 Thomas Fecke <thomas.fe...@eset.de > <mailto:thomas.fe...@eset.de>> wrote: > > Hey Thank you, > > If been monitoring vor about an Hour now. The Templates VM´s are > really slow – copy a new Template is slow. Non Template VM´s are fast > > Storage IO is average on 75 M/s Read Disk and 25 Write Disk. ( SSD > Raid ) > > Network is on 500 Mbits/s internal ( 10 Gbit Stroage connection ) > > And about 25Mbit/s external ( 400.000 k Internet ) > > I realy cant find that bottle neck > > > what type is the disks, the domain, how many domains ? > > *From:*Roy Golan <rgo...@redhat.com <mailto:rgo...@redhat.com>> > *Sent:* Dienstag, 17. April 2018 11:52 > *To:* Thomas Fecke <thomas.fe...@eset.de <mailto:thomas.fe...@eset.de>> > *Cc:* users@ovirt.org <mailto:users@ovirt.org> > *Subject:* Re: [ovirt-users] Performance Issue > > On Tue, 17 Apr 2018 at 12:45 Thomas Fecke <thomas.fe...@eset.de > <mailto:thomas.fe...@eset.de>> wrote: > > Okay, > > it seems to be that the Storage IO is the Problem – every Write > and Read Process takes a lot of time > > Sometimes the copy Job stops with 0/Byte and the traffic goes up > and down like a mountain. > > But the Storage Read and Write M/s looking fine… I don’t get it > > Any toughts? > > Keep monitoring you storage backend interface and see what's going > on there if you don't see anything special on the host. It could be > the network that leads to slow IO as well, who knows. > > If the initial VM creation is taking long you might want to create a > pool from your template with Pre-Started VMs, and that would at > least save you from the wait when you actually need the VM. > > *From:* users-boun...@ovirt.org <mailto:users-boun...@ovirt.org> > <users-boun...@ovirt.org <mailto:users-boun...@ovirt.org>> *On > Behalf Of *Thomas Fecke > *Sent:* Dienstag, 17. April 2018 10:58 > *To:* users@ovirt.org <mailto:users@ovirt.org> > *Subject:* [ovirt-users] Performance Issue > > Hey Guys, > > We Deploy a lot of Templates. We got our Training Environment > build in Ovirt. > > Our Problem – when we Deploy the Same Template. The VM´s getting > slower every Time we deply a new VM from that Template. > > And I really don’t know why. RAM locking good – CPU and Network > looking good. > > But it take about 15 Minute to create a new Template based VM – > normaly it takes about 30 Seconds. > > I checked nload and the Interface traffic – but its not really high. > > Can someone explain why its getting so slow and how to troubleshoot? > > _______________________________________________ > Users mailing list > Users@ovirt.org <mailto:Users@ovirt.org> > http://lists.ovirt.org/mailman/listinfo/users > > > > _______________________________________________ > Users mailing list > Users@ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > -- Tony Albers Systems administrator, IT-development Royal Danish Library, Victor Albecks Vej 1, 8000 Aarhus C, Denmark. Tel: +45 2566 2383 / +45 8946 2316 _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users