[Intel-gfx] [PATCH igt] Bump measure_ring_size() timer interval

Antonio Argenziano antonio.argenziano at intel.com
Mon Mar 5 16:55:30 UTC 2018

On 05/03/18 03:03, Chris Wilson wrote:
> It appears that waiting for a 100us period whereby we are unable to
> submit another batch and proclaim the ring full, may have the false
> positive where the scheduler intervenes and we are signalled twice
> before having slept on ring space. Increasing the interval reduces the
> likelihood of the scheduler stealing the cpu from us, but does not
> eliminate it. Fortuitously it appears to be a rare false positive.
> For the library routine, we can fork a RT process but that seems a bit
> overkill!
> References: https://bugs.freedesktop.org/show_bug.cgi?id=105343
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Antonio Argenziano <antonio.argenziano at intel.com>

Reviewed-by: Antonio Argenziano <antonio.argenziano at intel.com>

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