diff options
| author | Chris Wilson <[email protected]> | 2019-12-18 09:35:04 +0000 |
|---|---|---|
| committer | Chris Wilson <[email protected]> | 2019-12-18 13:00:17 +0000 |
| commit | 81ff52b705775433a955b2746d37b87bdc89a3d0 (patch) | |
| tree | 38fa940f2bd55bcb546c8dc3a199ee7de57c38aa /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | da42104f589d979bbe402703fd836cec60befae1 (diff) | |
drm/i915/gt: Ratelimit display power w/a
For very light workloads that frequently park, acquiring the display
power well (required to prevent the dmc from trashing the system) takes
longer than the execution. A good example is the igt_coherency selftest,
which is slowed down by an order of magnitude in the worst case with
powerwell cycling. To prevent frequent cycling, while keeping our fast
soft-rc6, use a timer to delay release of the display powerwell.
Fixes: 311770173fac ("drm/i915/gt: Schedule request retirement when timeline idles")
References: https://gitlab.freedesktop.org/drm/intel/issues/848
Signed-off-by: Chris Wilson <[email protected]>
Cc: Tvrtko Ursulin <[email protected]>
Reviewed-by: Tvrtko Ursulin <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
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