[Bug 111788] [i915] i915/vcs1-sema exceeds i915/vcs1-busy value

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111788

--- Comment #4 from Chris Wilson <chris at chris-wilson.co.uk> ---
Put together https://patchwork.freedesktop.org/series/67183/ to help
investigate this. I think it is just the sampling issue, but that should also
be independent of gpu clock frequency.

To be certain of reasonably accuracy with 100ms sample intervals, our estimate
is that we want a 1000Hz timer.

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