[ewg] [PATCH] Make multicast and path record queue flexible.

[Christoph Lameter]

On Wed, 6 Oct 2010, Alekseys Senin wrote:

> > How do you handle the situation of the SM responding before the fabric has
> > been reconfigured? I do not see any delay on join. So they will be dropped
> > if the fabric was not reconfigured fast enough? Or does the SM somehow
> > delay the response?
>
> I think this issue, that should solve the problem of sending or delaying
> packets after obtaining MLID should be solved in another patch. Proposed
> code improve today situation, when you can't change it at all.

I agree with that.

> Relating to broadcast, I don't think that this is a good solution it
> will bring unwarranted load, specially in the case if no MLID received.
> The way of adding delay before we start to send packages, seems to me
> better.

Broadcast is a temporary solution and it only occurs with in an IB
partition. It would be a problem if one host suddenly starts sending
at full line speed. Maybe have that configurable?