[Gluster-users] Performance problems with glusterfs

[Mohit Anchlia]

For realistic measure use oflag=direct

On Fri, Oct 21, 2011 at 5:55 AM, Erik Schwalbe <erik.schwalbe at canoo.com>wrote:

>
>  Hello,
>
> I installed a trial version of Gluster Storage Software Appliance last
> week.
> At the moment I do some performance tests on the server.
> I use Ubuntu Server 11.10 as OS.
> Hardware (2x):
> -AMD Opteron Quad Core 2.2GHz
> -16GB RAM
> -12x WD 2TB HDD @ 7200rpm
> -10Gbit link between the servers
>
> I use zfs as filesystem.
> Glusterfs version 3.2.1, but I also installed 3.2.4 for testing (same
> behaviour).
>
> ZFS is mounted to /data:
> dd if=/dev/zero of=/data/LUN0 bs=1M count=20240
> 21223178240 Bytes (21 GB) kopiert, 13.6647 s, 1.6 GB/s
>
> create a glusterfs volume (without replication for testing local speed):
> gluster volume create test-volume san0:/data/test-volume
>
> and mount:
> mount -t glusterfs san0:/test-volume /mnt
>
> dd if=/dev/zero of=/mnt/LUN0 bs=1M count=20240
> 21223178240 Bytes (21 GB) kopiert, 79.0924 s, 268 MB/s
>
> I also do some tests with bonnie++. The result you can find as attachment.
>
> As you can see, glusterfs mount is much slower than the local zfs mount.
> During the dd and bonnie++ tests (glusterfs mount) the cpu load for
> glusterd and glusterfs processes is much more than 100% (150%-170%)
>
> Is this the normal behaviour of glusterfs?? Or Is the Quad core cpu to
> slow??
>
> Thank you for help.
>
> Regards,
> Erik Schwalbe
>
>
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> Erik Schwalbe
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>
>
>
>
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