On 11/15/2010 06:46 AM, David Lloyd wrote:
Thanks for that. With the hardware we've got we're hoping to get an
order of magnitude more throughput than that though.
We have:
4 nodes
12 sata disks hardware raid in each node
10Gbit ethernet
I'm getting over 1GByte/s reads and writes on the xfs filesystems locally.
typical filesize will be 10MByte, but lots of bigger and smaller files too.
there will be about 50 clients, all mounting glusterfs.
'Introduction to Gluster' also ominously states: 'There are known
challenges with other filesystems' (which would include xfs). Can
anyone expand on that?
Cheers
David
On Mon, Nov 15, 2010 at 11:09 AM, Liam Slusser<[email protected]> wrote:
We run two somewhat large gluster clusters in production on xfs with great
success. I had to go with xfs as ext4 doesn't support large enough file
systems. Make sure you mount your xfs partitions with 64bit inode support
and use only 64bit OS's.
I'm still running 2.0.9 however the performance is pretty good. We use ours
to store media for our website and with our smaller two server four brick
60tb cluster I can easily push 800mbit of http traffic with an average
object size of 2-3megs. Not bad for a bunch of slow sata disks!
Liam
David -
From a previous XFS & Gluster discussion -
"The reason we usually recommend Ext3 instead of XFS is because the
implementation of extended attributes in Ext3 is significantly faster
than in XFS. GlusterFS makes use of extended attributes quite a bit,
especially the replicate translator. In an environment with lots of
small files and many creation/deletion operations, using XFS with
replication will be slower than Ext3.
However, if your workload consists of mostly large files and relatively
fewer create/delete operations, you might find that the performance XFS
delivers is acceptable. We have many successful deployments that use XFS
in just this way."
Thanks,
Craig
-->
Craig Carl
Senior Systems Engineer
Gluster
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