From: David Teigland <teigland@redhat.com>
Date: Fri, 27 May 2011 10:24:58 -0400
Subject: [Cluster-devel] [PATCH 0/3] dlm_controld: Improvement on plock
 searching efficiency
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On Fri, May 27, 2011 at 07:44:03AM +0800, Jiaju Zhang wrote:
> This series introduces a RB tree for improving plock resources searching
> efficiency. We met this performance issue when running Samba on top of
> cluster filesystem, profiling during nbench runs with num-progs=500, the
> dlm_controld process can often be observed consuming an entire CPU core.

Thanks, the patches look good, I'll push them out to dlm.git.
I'm curious how many resources (files) you had before you saw
significant benefit from this patch?

Dave