From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Teigland Date: Mon, 2 Nov 2009 10:37:45 -0600 Subject: [Cluster-devel] SCTP versus OpenAIS/corosync time-outs In-Reply-To: <4AEE9B47.6060206@redhat.com> References: <20091031002025.GS14882@suse.de> <4AEE9B47.6060206@redhat.com> Message-ID: <20091102163745.GB613@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 Mon, Nov 02, 2009 at 08:41:43AM +0000, Christine Caulfield wrote: > To be honest, RRP & DLM/SCTP is not well tested or used. There are > probably lots of things that could be done to improve it. In particular > the failover aspect of it (the most important part of course) has > probably not been tried under any sort of serious load ... though i > could be wrong. Yep, I dusted off dlm/sctp a few weeks ago to see what kind of condition it was in. Fixed a couple bugs, and then found that it's noticably slower than tcp (using single sctp connections.) I spent a bit of timing trying to understand why but didn't. Someone more familiar with those networking layers could probably diagnose things much faster... not sure when I'll get back to looking at it again. Dave