[igt-dev] [PATCH i-g-t 3/3] benchmark: add gem_exec_delay

[Chris Wilson]

Quoting Lionel Landwerlin (2018-04-25 12:48:28)
> This benchmark's goal is to measure the time it takes between a
> request submitted to the hardware (either from i915 or guc) and when
> the first RCS command stream instruction from the user batchbuffer is
> executed. The measurement includes a number of things that need to
> happen before the first command streamer instruction can be executed
> like context save/restore, some hardware reconfiguration like
> powergating, per context workaround batchbuffers...

So what's OA doing here? RCS timetamp from submit to exec, i.e. what is
the improvement over the existing benchmarks?
-Chris