[Bug 105157] [CI] igt at perf_pmu@busy-accuracy-* - fail - Failed assertion: (double)(busy_r) <= (1.0 + (0.15)) * (double)((double)target_busy_pct / 100.0) && (double)(busy_r) >= (1.0 - (0.15)) * (double)((double)target_busy_pct / 100.0)
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Fri May 11 21:21:39 UTC 2018
https://bugs.freedesktop.org/show_bug.cgi?id=105157
Chris Wilson <chris at chris-wilson.co.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #18 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit d502f055ac4500cada758876a512ac4f14b34851
Author: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Date: Wed Apr 4 10:51:52 2018 +0100
tests/perf_pmu: Avoid RT thread for accuracy test
Realtime scheduling interferes with execlists submission (tasklet) so try
to simplify the PWM loop in a few ways:
* Drop RT.
* Longer batches for smaller systematic error.
* More truthful test duration calculation.
* Less clock queries.
* No self-adjust - instead just report the achieved cycle and let the
parent check against it.
* Report absolute cycle error.
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