Re: [Intel-gfx] [PATCH] drm/i915: Make RPS EI/thresholds multiple of 25 on SNB

2016-04-22 Thread Ville Syrjälä
On Thu, Apr 21, 2016 at 02:20:35PM +0200, Patrik Jakobsson wrote: > On Wed, Apr 20, 2016 at 04:43:56PM +0300, ville.syrj...@linux.intel.com wrote: > > From: Ville Syrjälä > > > > Somehow my SNB GT1 (Dell XPS 8300) gets very unhappy around > > GPU hangs if the RPS EI/thresholds aren't suitably ali

Re: [Intel-gfx] [PATCH] drm/i915: Make RPS EI/thresholds multiple of 25 on SNB

2016-04-22 Thread Ville Syrjälä
On Thu, Apr 21, 2016 at 02:20:35PM +0200, Patrik Jakobsson wrote: > On Wed, Apr 20, 2016 at 04:43:56PM +0300, ville.syrj...@linux.intel.com wrote: > > From: Ville Syrjälä > > > > Somehow my SNB GT1 (Dell XPS 8300) gets very unhappy around > > GPU hangs if the RPS EI/thresholds aren't suitably ali

Re: [Intel-gfx] [PATCH] drm/i915: Make RPS EI/thresholds multiple of 25 on SNB

2016-04-21 Thread Patrik Jakobsson
On Wed, Apr 20, 2016 at 04:43:56PM +0300, ville.syrj...@linux.intel.com wrote: > From: Ville Syrjälä > > Somehow my SNB GT1 (Dell XPS 8300) gets very unhappy around > GPU hangs if the RPS EI/thresholds aren't suitably aligned. > It seems like scheduling/timer interupts stop working somehow > and

Re: [Intel-gfx] [PATCH] drm/i915: Make RPS EI/thresholds multiple of 25 on SNB

2016-04-20 Thread Ville Syrjälä
On Wed, Apr 20, 2016 at 04:43:56PM +0300, ville.syrj...@linux.intel.com wrote: > From: Ville Syrjälä The patch subject should probably read "drm/i915: Make RPS EI/thresholds multiple of 25 on SNB-BDW" since it does change more than SNB. I'll fix that up when/if I push. > > Somehow my SNB GT1 (D

Re: [Intel-gfx] [PATCH] drm/i915: Make RPS EI/thresholds multiple of 25 on SNB

2016-04-20 Thread Chris Wilson
On Wed, Apr 20, 2016 at 04:43:56PM +0300, ville.syrj...@linux.intel.com wrote: > From: Ville Syrjälä > > Somehow my SNB GT1 (Dell XPS 8300) gets very unhappy around > GPU hangs if the RPS EI/thresholds aren't suitably aligned. > It seems like scheduling/timer interupts stop working somehow > and

[Intel-gfx] [PATCH] drm/i915: Make RPS EI/thresholds multiple of 25 on SNB

2016-04-20 Thread ville . syrjala
From: Ville Syrjälä Somehow my SNB GT1 (Dell XPS 8300) gets very unhappy around GPU hangs if the RPS EI/thresholds aren't suitably aligned. It seems like scheduling/timer interupts stop working somehow and things get stuck eg. in usleep_range(). I bisected the problem down to commit 8a5864377b12