On 02/12/2015 04:37 AM, Nico Schottelius
wrote:
> Hello,
>
> switching from 3.4.2 to 3.6.2
reduces our average test performance
dramatically.
>
> Our test setup: directly connected
1 GBit/s hosts setup with:
>
> rm -rf
/home/gluster/.glusterfs/
> rm /home/gluster/*
> setfattr -x
trusted.glusterfs.volume-id
/home/gluster/
> setfattr -x trusted.gfid
/home/gluster/
> gluster volume create
xfs-plain replica 2 transport tcp
vmhost1-cluster1:/home/gluster
vmhost2-cluster1:/home/gluster
> gluster volume start xfs-plain
>
> Afterwards we run our near real
world test
>
> mount -t glusterfs
vmhost1-cluster1:/xfs-plain
/mnt/gluster/
> while true; do dd
if=redmine-from-ceph-20150204
of=/mnt/gluster/testvm bs=1M; rm
/mnt/gluster/testvm; done
>
> The results are
>
> 3.4.2: ~71-72 MiB/s [ubuntu
14.04]
> 3.6.2: ~59-64 MiB/s
[gluster-3.6 ppa]
>
> We have removed 3.6.2 and
re-installed 3.4.2 and can consistently
reproduce
> these numbers over hours of
testing.
Could you repeat the test on 3.6.2 with
'volume set <volname>
cluster.ensure-durability off' option
and post the results.
Pranith
