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? cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
