On Mon, 2016-07-04 at 16:11 +1000, Michael Ellerman wrote: > On Mon, 2016-04-07 at 04:51:44 UTC, Benjamin Herrenschmidt wrote: > > On some environments (prototype machines, some simulators, etc...) > > there is no functional interrupt source to signal completion, so > > we rely on the fairly slow OPAL heartbeat. > > > > In a number of cases, the calls complete very quickly or even > > immediately. We've observed that it helps a lot to wakeup the OPAL > > heartbeat thread before waiting for event in those cases, it will > > call OPAL immediately to collect completions for anything that > > finished fast enough. > > Any performance/jitter impact on normal systems?
Not that I can think of. Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
