From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Teigland Date: Fri, 30 Mar 2007 11:03:28 -0500 Subject: [Cluster-devel] Re: [GFS2] default drop count for lock_dlm In-Reply-To: <1175263091.1636.163.camel@quoit.chygwyn.com> References: <1175263091.1636.163.camel@quoit.chygwyn.com> Message-ID: <20070330160327.GA13056@redhat.com> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit On Fri, Mar 30, 2007 at 02:58:11PM +0100, Steven Whitehouse wrote: > Hi, > > I think it would be a good plan to have a zero default (i.e. off) for > the drop_count parameter, otherwise its liable to cause a performance > problem if its set too low. There is also the question of what exactly > the "right" setting actually is, as it seems it's not easy to find the > right balance. Probably the best advice is to only set it in the case > that the DLM is taking excessive amounts of memory and then use the > guidance from cat /proc/slabinfo | grep gfs2_glock to get a rough idea > of the threshold to set it at, Sounds fine to me.