Re: [PATCH] i915/pmu: Fix zero delta busyness issue

2025-01-22 Thread Rodrigo Vivi
On Tue, Jan 21, 2025 at 03:58:03PM -0800, Umesh Nerlige Ramappa wrote: > On Tue, Jan 21, 2025 at 06:10:34PM -0500, Rodrigo Vivi wrote: > > On Tue, Jan 21, 2025 at 02:25:57PM -0800, Umesh Nerlige Ramappa wrote: > > > > drm/i915/pmu as tag please... > > will do > > > > > > When running igt@gem_ex

Re: [PATCH] i915/pmu: Fix zero delta busyness issue

2025-01-21 Thread Umesh Nerlige Ramappa
On Tue, Jan 21, 2025 at 06:10:34PM -0500, Rodrigo Vivi wrote: On Tue, Jan 21, 2025 at 02:25:57PM -0800, Umesh Nerlige Ramappa wrote: drm/i915/pmu as tag please... will do When running igt@gem_exec_balancer@individual for multiple iterations, it is seen that the delta busyness returned by P

Re: [PATCH] i915/pmu: Fix zero delta busyness issue

2025-01-21 Thread Rodrigo Vivi
On Tue, Jan 21, 2025 at 02:25:57PM -0800, Umesh Nerlige Ramappa wrote: drm/i915/pmu as tag please... > When running igt@gem_exec_balancer@individual for multiple iterations, > it is seen that the delta busyness returned by PMU is 0. The issue stems > from a combination of 2 implementation specifi

[PATCH] i915/pmu: Fix zero delta busyness issue

2025-01-21 Thread Umesh Nerlige Ramappa
When running igt@gem_exec_balancer@individual for multiple iterations, it is seen that the delta busyness returned by PMU is 0. The issue stems from a combination of 2 implementation specific details: 1) gt_park is throttling __update_guc_busyness_stats() so that it does not hog PCI bandwidth for