> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:openib-general- > [EMAIL PROTECTED] On Behalf Of Richard Frank > Sent: Thursday, December 01, 2005 1:03 PM > To: Grant Grundler > Cc: [email protected] > Subject: Re: [openib-general] [ANNOUNCE] Contribute RDS (Reliable > DatagramSockets) to OpenIB > > We do not see any deficiencies - the RDS specification and current > implementation so far meet our requirements and is working very well. > > There is more we will want to do further down the road - such as access > the RDS sockets via AIO so we can add zero copy support. >
Richard, In the document you published few weeks ago you listed latency and CPU% as key goals I assume to really get the latency down you need a user space implementation that can leverage on pooling, any plans to work in user space ? Several other comments/suggestions if I may add (may already took them into account): As a UDP consumer isn't there a need to support Multicast as well, and potentially leverage on IB multicast for scalability ? I feel that there is not much benefit in eliminating the reliability checks in the upper (UDP) consumer, since its negligible in CPU or latency overhead, you may even just go with a UC implementation, also UDP consumers may want to use RDS without modifying the application, or may accept dropped packets or over subscription (since they are interested in the most recent data). And it is very important to tie the RDS implementation to the IP stack for routing information/resolution, ARPs, etc' So it would become transparent from the mng/configuration side as well, not requiring separate configuration files, or dealing better with dynamic environments and failures like a real UDP would. Yaron > > On Thu, 2005-12-01 at 08:16 -0800, Grant Grundler wrote: > > On Tue, Nov 29, 2005 at 03:23:46PM -0800, Roland Dreier wrote: > > > Any progress to report on the port of RDS from the SilverStorm > > > proprietary stack to the standard Linux stack? I think it would > > > really move the discussion forward if there were some code that people > > > could build and use. > > > > As primary consumer of RDS, I think Oracle first needs to decide if > > the deficiencies that Mike Krause pointed out are acceptable or not. > > > > grant > > _______________________________________________ > > openib-general mailing list > > [email protected] > > http://openib.org/mailman/listinfo/openib-general > > > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib- > general > > _______________________________________________ > openib-general mailing list > [email protected] > http://openib.org/mailman/listinfo/openib-general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib- > general _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
