> Quoting Sean Hefty <[EMAIL PROTECTED]>: > Subject: RE: [ofa-general] Re: Re: IPoIB-CM UC mode > > >What real advantages are there for doing this "in-band" as you say? > > Doing this in-band keeps the entire keep-alive protocol within the ULP. It > can > set the keep-alive message size and retry times. > LAP messages are fixed at 256 > bytes, add additional traffic on QP 1, and retries are limited by the CM > protocol.
BTW, I think we might want to avoid retries altogether: if LAP timed out, we can just re-create the connection. > (Of course, new CM messages would have these same limits, so it's not > clear to me that creating new CM messages are a win. New CM messages would > allow the CM itself to respond directly to keep-alives though.) OTOH, using QP1 makes it easier to separate rare keepalives from fast-path data packet receive path. -- MST _______________________________________________ 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
