On Wed, 2012-08-01 at 22:08 -0700, bwidawsk wrote: > On 2012-08-01 03:06, Chris Wilson wrote: > > On Wed, 01 Aug 2012 10:38:36 +0100, James Bottomley > > <james.bottom...@hansenpartnership.com> wrote: > >> On Wed, 2012-08-01 at 09:58 +0100, Chris Wilson wrote: > >> > On Wed, 01 Aug 2012 09:45:04 +0100, James Bottomley > >> <james.bottom...@hansenpartnership.com> wrote: > >> > > On Wed, 2012-08-01 at 09:16 +0100, Chris Wilson wrote: > >> > > > On Wed, 01 Aug 2012 09:06:12 +0100, James Bottomley > >> <james.bottom...@hansenpartnership.com> wrote: > >> > > > > I got the attached to apply and it doesn't really improve > >> the idle power > >> > > > > much (12.5W). > >> > > > > >> > > > That's good to know. Next step is to try overriding > >> i915.semaphores. > >> > > > Can you please test with i915.semaphores=0 and > >> i915.semaphores=1? > >> > > > >> > > There's not much point doing i915_semaphores=1 since that's the > >> default > >> > > on gen 6 hardware, but i915_semaphores=0 recovers and idle power > >> of > >> > > ~6.5W > >> > > >> > It is only the default if iommu is off, and changing the default > >> > was one of the side-effects of the patch you bisected. > >> > > >> > Can you please login to the desktop, let it idle, record > >> > /sys/kernel/debug/dri/0/i915_cur_delayinfo and .../i915_drpc_info. > >> > Then trace-cmd record -e i915 sleep 10s, > >> > >> OK, what is trace-cmd? It looks similar to perf tools ... is that > >> it? > > > > Yes, it is roughly equivalent and you should be able to achieve the > > same > > with perf trace - except I haven't done it before so I don't have > > quick > > advice on how to drive it. :) > > -Chris > > Should be something like: > perf record -f -g -e i915:* -a
I already sent the output of trace-cmd ... is that enough? James _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel
