Be aware, users also report low IOPS on Xenserver 6.x when doing 4k
writes on iSCSI.
Regards,
Nik
Nik Martin
+1.251.243.0043 x1003
Relentless Reliability
On Thu, 10 Jan 2013, Kraig Amador wrote:
Ubuntu 12.04.1 LTS with qemu-kvm 1.0+noroms-0ubuntu14.3. I believe this is now
the current version of KVM for precise, we were originally having problems with
the NIC dropping out after a few days of usage but that was resolved by
upgrading to 1.0+noroms-0ubuntu14.3. You can find the details about that and
why we upgraded on
https://bugs.launchpad.net/ubuntu/precise/+source/qemu-kvm/+bug/997978.
--
Kraig Amador
On Thursday, January 10, 2013 at 9:17 AM, Nux! wrote:
On 10.01.2013 16:49, Kraig Amador wrote:
One more opinion on the topic,
We have been using KVM for a few months now but we are noticing some
severe disk io performance issues that we have been unable to tune
our
way out of. We have tested Xen and seen 5x improvements on the same
hardware. I've spoken to other people who have had the same problem
when using local disk on KVM, so its something you should look out
for
if disk performance is a concern.
It is so drastic for us that we are considering rebuilding all of our
50+ VM hosts on Xen.
Hi,
Can you detail what kind of OS, kvm version etc you are seeing this
issues with? Maybe it's not a general problem ..
--
Sent from the Delta quadrant using Borg technology!
Nux!
www.nux.ro (http://www.nux.ro)
