From mboxrd@z Thu Jan 1 00:00:00 1970 From: Or Gerlitz Subject: Re: rdma_listen() backlog maximum Date: Sun, 6 Feb 2011 10:51:30 +0200 Message-ID: <4D4E6112.4060008@voltaire.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Mike Mundy Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "Hefty, Sean" List-Id: linux-rdma@vger.kernel.org Mike Mundy wrote: > I'm prototyping a server that needs to accept a large number of > simultaneous incoming RDMA CM connections. I noticed that > drivers/infiniband/core/ucma.c limits the backlog to 128. Is there a > reason why the limit is 128? Or to put it another way, what breaks if > the limit is increased to a larger value (say 256)? My understanding is that with the current cma/cm code, under IB/IBoE the backlog has no impact, in that environment, you're practically limited by the mad layer ability to receive the REQ mads. Sean, am I correct? Or. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html