Great, then if it helps Stephane, I think we should merge it. Acked-by-top-post: Jesse Barnes <jbar...@virtuousgeek.org>
On Wed, 27 Feb 2013 05:50:08 +0000 "Zhang, Ouping" <ouping.zh...@intel.com> wrote: > Increase the RC6p threshold from 100000 to 150000, there is no power > difference between the two values. > for example: > (1) I915_WRITE(GEN6_RC6p_THRESHOLD, 100000); > video time: 11' > video avg watt 31.3 > watt-hour: 5.6 > > (2) I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); > video time: 11' > video avg watt 31.2 > watt-hour: 5.6 > > -----Original Message----- > From: Jesse Barnes [mailto:jbar...@virtuousgeek.org] > Sent: Tuesday, February 26, 2013 12:14 AM > To: Zhang, Ouping > Cc: Stéphane Marchesin; intel-gfx@lists.freedesktop.org > Subject: Re: [Intel-gfx] [PATCH] drm/i915: Increase the RC6p threshold. > > How does the watt-hour result compare to before the patch? > > Thanks, > Jesse > > On Mon, 25 Feb 2013 07:33:38 +0000 > "Zhang, Ouping" <ouping.zh...@intel.com> wrote: > > > running video workload, video avg watt = 38.4 and watt-hour = 6.9 cat > > /sys/class/drm/card0/power/rc6_residency_ms > > cat /sys/class/drm/card0/power/rc6p_residency_ms > > rc6_residency_ms increase from 6708 to 483627 rc6p_residency_ms > > increase from 410092 to 423378 > > > > -----Original Message----- > > From: Jesse Barnes [mailto:jbar...@virtuousgeek.org] > > Sent: Friday, February 22, 2013 12:50 AM > > To: Zhang, Ouping > > Cc: Stéphane Marchesin; intel-gfx@lists.freedesktop.org > > Subject: Re: [Intel-gfx] [PATCH] drm/i915: Increase the RC6p threshold. > > > > You have to modify the kernel to make the change Stephane suggested, then > > measure the energy consumption across your workloads. I'd expect the > > residency to change, but I'm ultimately concerned with the energy used. > > > > Jesse > > > > On Thu, 21 Feb 2013 05:08:10 +0000 > > "Zhang, Ouping" <ouping.zh...@intel.com> wrote: > > > > > Hi Jesse, > > > > > > Do you mean increase /sys/class/drm/card0/power/rc6p_residency_ms from > > > 100000 to 150000, and measure power difference on IVB when system is on > > > idle? > > > > > > -----Original Message----- > > > From: Jesse Barnes [mailto:jbar...@virtuousgeek.org] > > > Sent: Wednesday, February 20, 2013 8:16 AM > > > To: Stéphane Marchesin > > > Cc: intel-gfx@lists.freedesktop.org; Zhang, Ouping > > > Subject: Re: [Intel-gfx] [PATCH] drm/i915: Increase the RC6p threshold. > > > > > > On Tue, 19 Feb 2013 15:53:56 -0800 > > > Stéphane Marchesin <marc...@chromium.org> wrote: > > > > > > > On Tue, Jan 29, 2013 at 7:41 PM, Stéphane Marchesin > > > > <marc...@chromium.org>wrote: > > > > > > > > > This increases GEN6_RC6p_THRESHOLD from 100000 to 150000. For > > > > > some reason this avoids the gen6_gt_check_fifodbg.isra warnings > > > > > and associated GPU lockups, which makes my ivy bridge machine stable. > > > > > > > > > > > > > > Ping? > > > > > > Seems ok to me. Ouping, can you measure any power difference between the > > > two values? > > > > > > Thanks, > > > -- > > > Jesse Barnes, Intel Open Source Technology Center > > > > > > -- > > Jesse Barnes, Intel Open Source Technology Center > > > -- > Jesse Barnes, Intel Open Source Technology Center -- Jesse Barnes, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
