Quoting r. Roland Dreier <[EMAIL PROTECTED]>: > Subject: Re: [openib-general] [PATCH] 2/2 : ip over ib tx/rx split > > Roland> The only difference is that we unlock the receive CQ and > Roland> lock the send CQ in the middle. > > Michael> Are you sure? I *do* have msi-x on these machines. > > Of course I'm not sure, but as far as I know, with the current drivers > even with MSI-X there's still only one completion interrupt handler, > which can only run on one CPU at a time. > > Of course allowing different CQs to be bound to different interrupt > handlers by creating multiple completion EQs is an good extension that > I plan on implementing, but it's not written yet. Even when it's done > I'm not sure that having IPoIB run multiple interrupt handlers at once > is worth it. It's fun to get huge numbers out of IPoIB but presumably > people want some CPU left over to do real work. > > - R. >
Sounds convincing. So the improvement is probably due to better send/receive parallelism we are getting in mthca. -- MST - Michael S. Tsirkin _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
