On 05/11/2014 02:04 AM, Vadims Korsaks wrote:
HI!
Created 2 node setup with oVirt 3.4 and CentOS 6.5, for storage created 2 node replicated gluster (3.5) fs on same hosts with oVirt. mount looks like this: 127.0.0.1:/gluster01 on /rhev/data-center/mnt/glusterSD/127.0.0.1:_gluster01 type fuse.glusterfs (rw,default_permissions,allow_other,max_read=131072)
when i making gluster test with dd, something like dd if=/dev/zero bs=1M count=20000 of=/rhev/data-center/mnt/glusterSD/127.0.0.1\:_gluster01/kaka i'm gettting speed ~ 110 MB/s, so this is 1Gbps speed of ethernet adapter
but with in VM created in oVirt speed is lower than 20 MB/s
why there is so huge difference? how can improve VMs disks speed?
What are your gluster volume settings? Have you applied the following performance tunables in gluster's virt profile: eager-lock=enable remote-dio=enable Regards, Vijay