Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Tue, 01 Jul 2014, O'Rourke, Tom Tom.O'rou...@intel.com wrote: From: Ben Widawsky [mailto:b...@bwidawsk.net] Sent: Friday, June 20, 2014 9:43 AM On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com Now that CHV is out, does it apply there too? Reviewed-by: Ben Widawsky b...@bwidawsk.net [snip] -- Ben Widawsky, Intel Open Source Technology Center [TOR:] For CHV, we expect timeout mode will provide benefit on some pre- production steppings and no benefit on the production stepping. [TOR:] Can we get this patch merged now that Ben has reviewed? Pushed to dinq, thanks for the patch and review. BR, Jani. -- Jani Nikula, Intel Open Source Technology Center ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
From: Ben Widawsky [mailto:b...@bwidawsk.net] Sent: Friday, June 20, 2014 9:43 AM On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com Now that CHV is out, does it apply there too? Reviewed-by: Ben Widawsky b...@bwidawsk.net [snip] -- Ben Widawsky, Intel Open Source Technology Center [TOR:] For CHV, we expect timeout mode will provide benefit on some pre- production steppings and no benefit on the production stepping. [TOR:] Can we get this patch merged now that Ben has reviewed? ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
From: Ben Widawsky [mailto:b...@bwidawsk.net] Sent: Friday, June 20, 2014 9:43 AM On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com Now that CHV is out, does it apply there too? Reviewed-by: Ben Widawsky b...@bwidawsk.net [snip] -- Ben Widawsky, Intel Open Source Technology Center [TOR:] For CHV, we expect timeout mode will provide benefit on some pre-production steppings and no benefit on the production stepping. ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
From: Daniel Vetter [mailto:daniel.vet...@ffwll.ch] On Behalf Of Daniel Vetter Sent: Tuesday, June 03, 2014 12:38 AM To: O'Rourke, Tom Cc: Daniel Vetter; intel-gfx@lists.freedesktop.org; Ben Widawsky; Kristen Carlson Accardi Subject: Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw [TOR:]...snip [TOR:] Can we get this patch merged now that RC6 is working on drm-intel- nightly? Needs some review from bdw people. Also some relative residency improvement date should be added to the commit message (yes, we're allowed to do that now officially). -Daniel -- [TOR:] Hello bdw people, please review this patch. Is relative performance data now required in the commit message? A week ago this would have been prohibited. You might need to double-check with your own manager, but we're now again allowed to officially add it to the commit message. It was kinda always required, just had to be washed down more. -Daniel [TOR:] Sorry, I am not allowed to add the performance improvement claims to the commit message. Tom ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Mon, Jun 02, 2014 at 09:51:27PM +, O'Rourke, Tom wrote: From: Daniel Vetter [mailto:daniel.vet...@ffwll.ch] On Behalf Of Daniel Vetter Sent: Monday, June 02, 2014 1:26 AM To: O'Rourke, Tom Cc: intel-gfx@lists.freedesktop.org; Ben Widawsky; Kristen Carlson Accardi Subject: Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw On Fri, May 30, 2014 at 11:30:18PM +, O'Rourke, Tom wrote: On Wed, Apr 30, 2014 at 02:14:02PM -0700, Kristen Carlson Accardi wrote: On Thu, 01 May 2014 00:03:15 +0300 Imre Deak imre.d...@intel.com wrote: On Wed, 2014-04-30 at 13:41 -0700, Ben Widawsky wrote: On Wed, Apr 30, 2014 at 01:34:36PM -0700, Kristen Carlson Accardi wrote: On Tue, 29 Apr 2014 22:31:49 -0700 Ben Widawsky b...@bwidawsk.net wrote: On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com I've merged this one to my bdw-rc6 branch, and therefore my broadwell branch. Hopefully Kristen will see some improvement. Unfortunately, I built your bdw-rc6 branch along with the revert I need to get my panel to work, and I get zero rc6 residency. Do I have to explicitly enable it? I'm not actually sure. You can try it and let me know. I haven't had any time to verify the rebase. We can check my hack. Note that in -nightly you also have to update sanitize_rc6_option() along with intel_enable_gt_powersave() and intel_disable_gt_powersave() since atm these keep RC6 disabled on BDW. --Imre Yes, I reverted fb5ed3b201fe5670c9ffeec3b5f6ff044d543c9e and was able to see some rc6 residency. With the idle workload, residency appears to be similar to before, so no regression. Thanks. I'll squash this in where appropriate. -- Ben Widawsky, Intel Open Source Technology Center [TOR:] Can we get this patch merged now that RC6 is working on drm-intel- nightly? Needs some review from bdw people. Also some relative residency improvement date should be added to the commit message (yes, we're allowed to do that now officially). -Daniel -- [TOR:] Hello bdw people, please review this patch. Is relative performance data now required in the commit message? A week ago this would have been prohibited. You might need to double-check with your own manager, but we're now again allowed to officially add it to the commit message. It was kinda always required, just had to be washed down more. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Fri, May 30, 2014 at 11:30:18PM +, O'Rourke, Tom wrote: On Wed, Apr 30, 2014 at 02:14:02PM -0700, Kristen Carlson Accardi wrote: On Thu, 01 May 2014 00:03:15 +0300 Imre Deak imre.d...@intel.com wrote: On Wed, 2014-04-30 at 13:41 -0700, Ben Widawsky wrote: On Wed, Apr 30, 2014 at 01:34:36PM -0700, Kristen Carlson Accardi wrote: On Tue, 29 Apr 2014 22:31:49 -0700 Ben Widawsky b...@bwidawsk.net wrote: On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com I've merged this one to my bdw-rc6 branch, and therefore my broadwell branch. Hopefully Kristen will see some improvement. Unfortunately, I built your bdw-rc6 branch along with the revert I need to get my panel to work, and I get zero rc6 residency. Do I have to explicitly enable it? I'm not actually sure. You can try it and let me know. I haven't had any time to verify the rebase. We can check my hack. Note that in -nightly you also have to update sanitize_rc6_option() along with intel_enable_gt_powersave() and intel_disable_gt_powersave() since atm these keep RC6 disabled on BDW. --Imre Yes, I reverted fb5ed3b201fe5670c9ffeec3b5f6ff044d543c9e and was able to see some rc6 residency. With the idle workload, residency appears to be similar to before, so no regression. Thanks. I'll squash this in where appropriate. -- Ben Widawsky, Intel Open Source Technology Center [TOR:] Can we get this patch merged now that RC6 is working on drm-intel-nightly? Needs some review from bdw people. Also some relative residency improvement date should be added to the commit message (yes, we're allowed to do that now officially). -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
From: Daniel Vetter [mailto:daniel.vet...@ffwll.ch] On Behalf Of Daniel Vetter Sent: Monday, June 02, 2014 1:26 AM To: O'Rourke, Tom Cc: intel-gfx@lists.freedesktop.org; Ben Widawsky; Kristen Carlson Accardi Subject: Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw On Fri, May 30, 2014 at 11:30:18PM +, O'Rourke, Tom wrote: On Wed, Apr 30, 2014 at 02:14:02PM -0700, Kristen Carlson Accardi wrote: On Thu, 01 May 2014 00:03:15 +0300 Imre Deak imre.d...@intel.com wrote: On Wed, 2014-04-30 at 13:41 -0700, Ben Widawsky wrote: On Wed, Apr 30, 2014 at 01:34:36PM -0700, Kristen Carlson Accardi wrote: On Tue, 29 Apr 2014 22:31:49 -0700 Ben Widawsky b...@bwidawsk.net wrote: On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com I've merged this one to my bdw-rc6 branch, and therefore my broadwell branch. Hopefully Kristen will see some improvement. Unfortunately, I built your bdw-rc6 branch along with the revert I need to get my panel to work, and I get zero rc6 residency. Do I have to explicitly enable it? I'm not actually sure. You can try it and let me know. I haven't had any time to verify the rebase. We can check my hack. Note that in -nightly you also have to update sanitize_rc6_option() along with intel_enable_gt_powersave() and intel_disable_gt_powersave() since atm these keep RC6 disabled on BDW. --Imre Yes, I reverted fb5ed3b201fe5670c9ffeec3b5f6ff044d543c9e and was able to see some rc6 residency. With the idle workload, residency appears to be similar to before, so no regression. Thanks. I'll squash this in where appropriate. -- Ben Widawsky, Intel Open Source Technology Center [TOR:] Can we get this patch merged now that RC6 is working on drm-intel- nightly? Needs some review from bdw people. Also some relative residency improvement date should be added to the commit message (yes, we're allowed to do that now officially). -Daniel -- [TOR:] Hello bdw people, please review this patch. Is relative performance data now required in the commit message? A week ago this would have been prohibited. Thanks, Tom ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Wed, Apr 30, 2014 at 02:14:02PM -0700, Kristen Carlson Accardi wrote: On Thu, 01 May 2014 00:03:15 +0300 Imre Deak imre.d...@intel.com wrote: On Wed, 2014-04-30 at 13:41 -0700, Ben Widawsky wrote: On Wed, Apr 30, 2014 at 01:34:36PM -0700, Kristen Carlson Accardi wrote: On Tue, 29 Apr 2014 22:31:49 -0700 Ben Widawsky b...@bwidawsk.net wrote: On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com I've merged this one to my bdw-rc6 branch, and therefore my broadwell branch. Hopefully Kristen will see some improvement. Unfortunately, I built your bdw-rc6 branch along with the revert I need to get my panel to work, and I get zero rc6 residency. Do I have to explicitly enable it? I'm not actually sure. You can try it and let me know. I haven't had any time to verify the rebase. We can check my hack. Note that in -nightly you also have to update sanitize_rc6_option() along with intel_enable_gt_powersave() and intel_disable_gt_powersave() since atm these keep RC6 disabled on BDW. --Imre Yes, I reverted fb5ed3b201fe5670c9ffeec3b5f6ff044d543c9e and was able to see some rc6 residency. With the idle workload, residency appears to be similar to before, so no regression. Thanks. I'll squash this in where appropriate. -- Ben Widawsky, Intel Open Source Technology Center [TOR:] Can we get this patch merged now that RC6 is working on drm-intel-nightly? Thanks, Tom ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Tue, 29 Apr 2014 22:31:49 -0700 Ben Widawsky b...@bwidawsk.net wrote: On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com I've merged this one to my bdw-rc6 branch, and therefore my broadwell branch. Hopefully Kristen will see some improvement. Unfortunately, I built your bdw-rc6 branch along with the revert I need to get my panel to work, and I get zero rc6 residency. Do I have to explicitly enable it? ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Wed, Apr 30, 2014 at 01:34:36PM -0700, Kristen Carlson Accardi wrote: On Tue, 29 Apr 2014 22:31:49 -0700 Ben Widawsky b...@bwidawsk.net wrote: On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com I've merged this one to my bdw-rc6 branch, and therefore my broadwell branch. Hopefully Kristen will see some improvement. Unfortunately, I built your bdw-rc6 branch along with the revert I need to get my panel to work, and I get zero rc6 residency. Do I have to explicitly enable it? I'm not actually sure. You can try it and let me know. I haven't had any time to verify the rebase. We can check my hack. -- Ben Widawsky, Intel Open Source Technology Center ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Wed, 2014-04-30 at 13:41 -0700, Ben Widawsky wrote: On Wed, Apr 30, 2014 at 01:34:36PM -0700, Kristen Carlson Accardi wrote: On Tue, 29 Apr 2014 22:31:49 -0700 Ben Widawsky b...@bwidawsk.net wrote: On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com I've merged this one to my bdw-rc6 branch, and therefore my broadwell branch. Hopefully Kristen will see some improvement. Unfortunately, I built your bdw-rc6 branch along with the revert I need to get my panel to work, and I get zero rc6 residency. Do I have to explicitly enable it? I'm not actually sure. You can try it and let me know. I haven't had any time to verify the rebase. We can check my hack. Note that in -nightly you also have to update sanitize_rc6_option() along with intel_enable_gt_powersave() and intel_disable_gt_powersave() since atm these keep RC6 disabled on BDW. --Imre ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Thu, 01 May 2014 00:03:15 +0300 Imre Deak imre.d...@intel.com wrote: On Wed, 2014-04-30 at 13:41 -0700, Ben Widawsky wrote: On Wed, Apr 30, 2014 at 01:34:36PM -0700, Kristen Carlson Accardi wrote: On Tue, 29 Apr 2014 22:31:49 -0700 Ben Widawsky b...@bwidawsk.net wrote: On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com I've merged this one to my bdw-rc6 branch, and therefore my broadwell branch. Hopefully Kristen will see some improvement. Unfortunately, I built your bdw-rc6 branch along with the revert I need to get my panel to work, and I get zero rc6 residency. Do I have to explicitly enable it? I'm not actually sure. You can try it and let me know. I haven't had any time to verify the rebase. We can check my hack. Note that in -nightly you also have to update sanitize_rc6_option() along with intel_enable_gt_powersave() and intel_disable_gt_powersave() since atm these keep RC6 disabled on BDW. --Imre Yes, I reverted fb5ed3b201fe5670c9ffeec3b5f6ff044d543c9e and was able to see some rc6 residency. With the idle workload, residency appears to be similar to before, so no regression. ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com I've merged this one to my bdw-rc6 branch, and therefore my broadwell branch. Hopefully Kristen will see some improvement. --- drivers/gpu/drm/i915/intel_pm.c | 16 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 33b2592..0d63abf 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3335,15 +3335,23 @@ static void gen8_enable_rps(struct drm_device *dev) for_each_ring(ring, dev_priv, unused) I915_WRITE(RING_MAX_IDLE(ring-mmio_base), 10); I915_WRITE(GEN6_RC_SLEEP, 0); - I915_WRITE(GEN6_RC6_THRESHOLD, 5); /* 50/125ms per EI */ + if (IS_BROADWELL(dev)) + I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */ + else + I915_WRITE(GEN6_RC6_THRESHOLD, 5); /* 50/125ms per EI */ /* 3: Enable RC6 */ if (intel_enable_rc6(dev) INTEL_RC6_ENABLE) rc6_mask = GEN6_RC_CTL_RC6_ENABLE; intel_print_rc6_info(dev, rc6_mask); - I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | - GEN6_RC_CTL_EI_MODE(1) | - rc6_mask); + if (IS_BROADWELL(dev)) + I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | + GEN7_RC_CTL_TO_MODE | + rc6_mask); + else + I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | + GEN6_RC_CTL_EI_MODE(1) | + rc6_mask); /* 4 Program defaults and thresholds for RPS*/ I915_WRITE(GEN6_RPNSWREQ, -- 1.7.9.5 ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Ben Widawsky, Intel Open Source Technology Center ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Thu, Apr 10, 2014 at 08:29:55PM +, O'Rourke, Tom wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com How recent a nightly branch have you used to obtain these results? Chris just fixed some serious bugs in the gpu booster logic which would have affected all intermediate workloads. -Daniel He must not be using nightly if he has any BDW RC6 residency at all. [TOR:] Ben is correct. I was testing mostly with a kernel for Android. I also tested with Ben's broadwell branch and saw similar improvement. Ok I think it'd be good to have this when we actually merge/enable the final pieces of the bdw rc6 code. Can you please work together with Ben to make sure this patch isn't lost? Or who is shepherding bdw rc6 nowadays? -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com How recent a nightly branch have you used to obtain these results? Chris just fixed some serious bugs in the gpu booster logic which would have affected all intermediate workloads. -Daniel He must not be using nightly if he has any BDW RC6 residency at all. [TOR:] Ben is correct. I was testing mostly with a kernel for Android. I also tested with Ben's broadwell branch and saw similar improvement. ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
[Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com --- drivers/gpu/drm/i915/intel_pm.c | 16 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 33b2592..0d63abf 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3335,15 +3335,23 @@ static void gen8_enable_rps(struct drm_device *dev) for_each_ring(ring, dev_priv, unused) I915_WRITE(RING_MAX_IDLE(ring-mmio_base), 10); I915_WRITE(GEN6_RC_SLEEP, 0); - I915_WRITE(GEN6_RC6_THRESHOLD, 5); /* 50/125ms per EI */ + if (IS_BROADWELL(dev)) + I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */ + else + I915_WRITE(GEN6_RC6_THRESHOLD, 5); /* 50/125ms per EI */ /* 3: Enable RC6 */ if (intel_enable_rc6(dev) INTEL_RC6_ENABLE) rc6_mask = GEN6_RC_CTL_RC6_ENABLE; intel_print_rc6_info(dev, rc6_mask); - I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | - GEN6_RC_CTL_EI_MODE(1) | - rc6_mask); + if (IS_BROADWELL(dev)) + I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | + GEN7_RC_CTL_TO_MODE | + rc6_mask); + else + I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | + GEN6_RC_CTL_EI_MODE(1) | + rc6_mask); /* 4 Program defaults and thresholds for RPS*/ I915_WRITE(GEN6_RPNSWREQ, -- 1.7.9.5 ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com How recent a nightly branch have you used to obtain these results? Chris just fixed some serious bugs in the gpu booster logic which would have affected all intermediate workloads. -Daniel --- drivers/gpu/drm/i915/intel_pm.c | 16 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 33b2592..0d63abf 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3335,15 +3335,23 @@ static void gen8_enable_rps(struct drm_device *dev) for_each_ring(ring, dev_priv, unused) I915_WRITE(RING_MAX_IDLE(ring-mmio_base), 10); I915_WRITE(GEN6_RC_SLEEP, 0); - I915_WRITE(GEN6_RC6_THRESHOLD, 5); /* 50/125ms per EI */ + if (IS_BROADWELL(dev)) + I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */ + else + I915_WRITE(GEN6_RC6_THRESHOLD, 5); /* 50/125ms per EI */ /* 3: Enable RC6 */ if (intel_enable_rc6(dev) INTEL_RC6_ENABLE) rc6_mask = GEN6_RC_CTL_RC6_ENABLE; intel_print_rc6_info(dev, rc6_mask); - I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | - GEN6_RC_CTL_EI_MODE(1) | - rc6_mask); + if (IS_BROADWELL(dev)) + I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | + GEN7_RC_CTL_TO_MODE | + rc6_mask); + else + I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | + GEN6_RC_CTL_EI_MODE(1) | + rc6_mask); /* 4 Program defaults and thresholds for RPS*/ I915_WRITE(GEN6_RPNSWREQ, -- 1.7.9.5 ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Re: [Intel-gfx] [PATCH] drm/i915/bdw: Use timeout mode for RC6 on bdw
On Wed, Apr 09, 2014 at 10:02:39PM +0200, Daniel Vetter wrote: On Wed, Apr 09, 2014 at 11:44:06AM -0700, Tom O'Rourke wrote: Higher RC6 residency is observed using timeout mode instead of EI mode. This applies to Broadwell only. The difference is particularly noticeable with video playback. Issue: VIZ-3778 Change-Id: I62bb12e21caf19651034826b45cde7f73a80938d Signed-off-by: Tom O'Rourke Tom.O'rou...@intel.com How recent a nightly branch have you used to obtain these results? Chris just fixed some serious bugs in the gpu booster logic which would have affected all intermediate workloads. -Daniel He must not be using nightly if he has any BDW RC6 residency at all. --- drivers/gpu/drm/i915/intel_pm.c | 16 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 33b2592..0d63abf 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3335,15 +3335,23 @@ static void gen8_enable_rps(struct drm_device *dev) for_each_ring(ring, dev_priv, unused) I915_WRITE(RING_MAX_IDLE(ring-mmio_base), 10); I915_WRITE(GEN6_RC_SLEEP, 0); - I915_WRITE(GEN6_RC6_THRESHOLD, 5); /* 50/125ms per EI */ + if (IS_BROADWELL(dev)) + I915_WRITE(GEN6_RC6_THRESHOLD, 625); /* 800us/1.28 for TO */ + else + I915_WRITE(GEN6_RC6_THRESHOLD, 5); /* 50/125ms per EI */ /* 3: Enable RC6 */ if (intel_enable_rc6(dev) INTEL_RC6_ENABLE) rc6_mask = GEN6_RC_CTL_RC6_ENABLE; intel_print_rc6_info(dev, rc6_mask); - I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | - GEN6_RC_CTL_EI_MODE(1) | - rc6_mask); + if (IS_BROADWELL(dev)) + I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | + GEN7_RC_CTL_TO_MODE | + rc6_mask); + else + I915_WRITE(GEN6_RC_CONTROL, GEN6_RC_CTL_HW_ENABLE | + GEN6_RC_CTL_EI_MODE(1) | + rc6_mask); /* 4 Program defaults and thresholds for RPS*/ I915_WRITE(GEN6_RPNSWREQ, -- 1.7.9.5 ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Ben Widawsky, Intel Open Source Technology Center ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
