On Fri, 2007-04-13 at 09:58, Michael S. Tsirkin wrote: > > Quoting Hal Rosenstock <[EMAIL PROTECTED]>: > > Subject: Re: Default multicast group rate > > > > On Fri, 2007-04-13 at 09:50, Michael S. Tsirkin wrote: > > > > So the question is whether the best default is 2.5 Gbps which would > > > > allow any nodes to join or whether the current default is appropriate ? > > > > I know certain people's opinions who have been vocal on this list up to > > > > now. I'm looking for other opinions. Thanks. > > > > > > Just as a summary of what I was saying in another thread, > > > I propose implementing a dynamic approach, where we start at > > > 4x DDR, and drop the rate gradually as lower rate nodes join, > > > or raise the rate when all lower rate nodes have left. > > > > > > reregister can be used to let existing members know that > > > rate has changed. Later, a spec extension can be designed > > > to notify group members about rate change. > > > > > > I think this dynamic approach would be the best default, static > > > configurations can be supported as an option. > > > > We don't have that now so I'm trying to find out whether there is any > > consensus on which static rate should be the default currently. > > It kind of seems that 1x makes sense for the HOSTS group. > But it's a harder question for other mcast groups.
And we only get 1 choice :-( So someone is going to be unhappy whichever way this goes. This is another one of those imperfect engineering tradeoffs. -- Hal > > I also think that before a dynamic approach can be the default, we will > > need some experience with the behavior in this mode. > > Fair enough. _______________________________________________ general mailing list [EMAIL PROTECTED] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
