On Fri, Jan 20, 2017 at 10:15:09AM +0000, Chris Wilson wrote: > GT interrupts are very, very frequent as they are used for submitting > every request to the hardware (thanks be to execlists). Given their > prevalence and the comparity rarity of display interrupts, if we do > receive an IRQ and we process a GT interrupt skip the *unconditional* > checking of the display pipes. > > This gives a 20% improvement in *walltime* of GEM execution tests on my > Braswell nuc.
Ignoring the fact that this patch missed an interrupt and so is fubar, 10% of that walltime improvement actually came from latency reductions elsewhere, I compared against the wrong baseline. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
