[igt-dev] [PATCH i-g-t 6/9] tests/perf_pmu: PMU enable race test

[Chris Wilson]

Quoting Tvrtko Ursulin (2018-02-05 10:07:02)
> I can wrap it in a 10x loop but until the PMU is fixed that means 10x 
> longer runtime as well which I wanted to avoid, and instead count on 
> execution in numbers across the shards.

Otoh, I want a test that we can reliably run locally to determine if we
have a problem or not. A difficult balance. What should we aim for
flip-floppy tests, >50% error rate? >10%? Certainly has to be >1% or we
will struggle to notice the pattern. My finger in the air would say >33%.
-Chris