I ran into that (scheduler change) also after upgrading. I only accidentally stumbled onto that fact. I wish Ubuntu had made it a little clearer that not having a separate server kernel had more implications than just kernel!
Jake ----- Reply message ----- From: "Christoph Bartoschek" <po...@pontohonk.de> To: <pacema...@clusterlabs.org> Subject: [Pacemaker] DRBD < LVM < EXT4 < NFS performance Date: Sun, Jun 10, 2012 8:59 am Hi, we did not solve the performance issue yet. However we could improve the responsiveness of the system. We no longer get timeouts and reenabled pacemaker. The problem that lead to an unresponsive system was that Ubuntu 12.04 LTS uses the cfq I/O-Scheduler by default. Ubuntu 10.04 LTS used the dedline scheduler. After changing the scheduler to deadline on 12.04 the load drastically went down and we get not timeouts. Christoph _______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
_______________________________________________ Pacemaker mailing list: Pacemaker@oss.clusterlabs.org http://oss.clusterlabs.org/mailman/listinfo/pacemaker Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
