> -----Original Message----- > From: linux-cluster-bounces@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] > On Behalf Of Nicolas Ross > Sent: Wednesday, November 10, 2010 11:22 AM > To: linux clustering > Subject: Re: Starter Cluster / GFS > > > Performance-wise, GFS should should be OK for that if you are running > > with noatime and the operations are all reads. If you end up with > > write contention without partitioning the access to directory subtrees > > on a per server basis, the performance will fall off a cliff pretty quickly. > > Can you explain a little bit more ? I'm not sure I fully understand the partitioning into > directories ? We had to make similar changes to our application. Avoid allowing two (or more) hosts to create small files in the same shared directory within a GFS filesystem. That particular case scales poorly with GFS. If you can partition things so that two hosts will never create files in the same directory (we used a per-host directory structure for our application), or perhaps direct all write operations to one host while other hosts only read from GFS, it should perform well. -Jeff -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
