On 10.08.2012 13:46, Julian price wrote:
I have 2 similar servers. Since upgrading one from CentOS 5.5 to 6,
disk write performance in kvm guest VMs is much worse.
There are many, many posts about optimising kvm, many mentioning disk
performance in CentOS 5 vs 6. I've tried various changes
Nice post, Julian. It generated some feedback at
http://irclog.perlgeek.de/crimsonfu/2012-08-10 and a link to
http://rhsummit.files.wordpress.com/2012/03/wagner_network_perf.pdf
Phil
On Aug 10, 2012, at 8:46 AM, Julian price centos@julianprice.org.uk wrote:
I have 2 similar servers.
On 8/10/12, Kanwar Ranbir Sandhu m3fr...@thesandhufamily.ca wrote:
1. Let the KVM host manage the drives (i.e. RAID with LVM on top) and just
assign the single volume to OMV. OMV will see it as one HD.
2. Assign the individual drives to the OMV KVM, and let OMV manage the
RAID creation,
I have 2 similar servers. Since upgrading one from CentOS 5.5 to 6,
disk write performance in kvm guest VMs is much worse.
Philip Durbin wrote:
Nice post, Julian. It generated some feedback at
http://irclog.perlgeek.de/crimsonfu/2012-08-10 and a link to
Actually the physical disk position can make a HUGE difference. I have
a machine with a velociraptor 1GB drive which I have parititioned into two
500GB partitions, the average speed of the first (on the outside cylinders
of the drive) is far better than the second on the inside. Sorry I
physical disk position shouldn't have such a marked effect should it?
Nanook wrote:
Actually the physical disk position can make a HUGE difference.
Thank you Nanook for your explanation. I think you're right. It looks
like the variation in performance is not due to LVM, but the position on
On Sat, Aug 11, 2012 at 5:26 PM, Julian price
centos@julianprice.org.uk wrote:
physical disk position shouldn't have such a marked effect should it?
Nanook wrote:
Actually the physical disk position can make a HUGE difference.
Thank you Nanook for your explanation. I think you're
