Quoting r. Roland Dreier <[EMAIL PROTECTED]>: > Subject: Re: ip over ib tx/rx split > > Michael> Hi! The following simple patch splits the tx and rx > Michael> completions for ip over ib to separate cqs. This shall > Michael> get better performance on SMP due to reduced cq lock > Michael> contention. > > I tried something similar and even split ipoib_ib_completion() into > two functions (to save dispatching between RX and TX completions). I > was not able to measure any performance improvement.
This wa slikely before we removed the qptable lock in cq poll? > In fact I'm not convinced that this should be better, since it may > cause more interrupts and reduce the natural interrupt coalescing > effect that having all completions go to the same queue has. It cant , interrupt coalescing is done by eq, not by cq. > - Roland > -- 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
