[ofa-general] Re: Default multicast group rate

[Hal Rosenstock]

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.

I also think that before a dynamic approach can be the default, we will
need some experience with the behavior in this mode.

-- Hal