* Kip Macy <[EMAIL PROTECTED]> [070611 15:54] wrote: > >I think its a windowism, stands for Receive Side Scaling, and what it means > >is multiple receive queues, each with an MSI/X vector so they can interrupt > >different CPUs, or they can be tied to virtual guests, or MACs, etc etc... > > AFAICT FreeBSD can't currently benefit from this as there is no cpu > affinity for connections. I may be wrong, but I see lower > single-connection throughput using a receive queue per core than using > a single receive queue. RSS is done by hashing a TCP tuple (I'm > deliberately vague because at least with cxgb there are multiple > combinations, the default is the standard 4-tuple) to a receive queue.
True, but support it is relatively trivial from the kernel PoV. Basically you allow the process to fetch which cpu a socket is bound to, then you can use descriptor passing (processes) or shared fdtable (threads) and a call to bind to cpu to properly juggle things around. -- - Alfred Perlstein _______________________________________________ cvs-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"
