[ovirt-users] gluster performance oVirt 3.4

[Vadims Korsaks]

Citējot Vijay Bellur <vbellur at redhat.com> :
>  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
>
setting were:
[root at centos155 ~]# gluster volume info gluster01

Volume Name: gluster01
Type: Replicate
Volume ID: 436edaa3-ac8b-421f-aa35-68b5bd7064b6
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: 10.2.75.152:/mnt/gluster01/brick
Brick2: 10.2.75.155:/mnt/gluster01/brick
Options Reconfigured:
storage.owner-gid: 36
storage.owner-uid: 36


add your settings settings now it looks

[root at centos155 ~]# gluster volume info gluster01

Volume Name: gluster01
Type: Replicate
Volume ID: 436edaa3-ac8b-421f-aa35-68b5bd7064b6
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: 10.2.75.152:/mnt/gluster01/brick
Brick2: 10.2.75.155:/mnt/gluster01/brick
Options Reconfigured:
network.remote-dio: enable
cluster.eager-lock: enable
storage.owner-gid: 36
storage.owner-uid: 36


but this didn't affected performace in any big way
should hosts to be restarted?