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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2020-03-23 09:28:37 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-03-23 12:51:19 +0000 |
| commit | edee52c927ef30d5b0ae871375567f3484f23cee (patch) | |
| tree | 75360a8c8992fd12b85aa187ce1a7d245570fe78 /tools/perf/scripts/python | |
| parent | drm/i915: Extend intel_wakeref to support delayed puts (diff) | |
drm/i915/gt: Delay release of engine-pm after last retirement
Keep the engine-pm awake until the next jiffie, to avoid immediate
ping-pong under moderate load. (Forcing the idle barrier excerbates the
moderate load, dramatically increasing the driver overhead.) On the
other hand, delaying the idle-barrier slightly incurs longer rc6-off
and so more power consumption.
Closes: https://gitlab.freedesktop.org/drm/intel/issues/848
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200323092841.22240-4-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions