Gluster users - Oct 2012 - Gluster-users Digest, Vol 53, Issue 56 -- GlusterFS performance (Steve Thompson)

Steve,

try glusterfs 3.3 and look at: 

http://community.gluster.org/a/linux-kernel-tuning-for-glusterfs/

There will be more optimizations in the next Gluster release.  Take advantage of
the translators that Gluster supplies, including readahead translator and
quick-read translator.

Red Hat does offer support for Red Hat Storage based on Gluster, and it has a
pre-packaged tuning profile built into it.   We test with 10-GbE networks and
Gluster 3.3 does have reasonably good performance for large-file sequential
workloads (and it's scalable).