[Intel-gfx] [PATCH v4] drm/i915: Execlists small cleanups and micro-optimisations
chris at chris-wilson.co.uk
Mon Feb 29 10:53:02 UTC 2016
On Mon, Feb 29, 2016 at 10:45:34AM +0000, Tvrtko Ursulin wrote:
> This ok?
> One unexplained result is with "gem_latency -n 0" (dispatching
> empty batches) which shows 5% more throughput, 8% less CPU time,
> 25% better producer and consumer latencies, but 15% higher
> dispatch latency which looks like a possible measuring artifact.
I doubt it is a measuring artefact since throughput = 1/(dispatch +
latency + test overhead), and the dispatch latency here is larger than
the wakeup latency and so has greater impact on throughput in this
Chris Wilson, Intel Open Source Technology Centre
More information about the Intel-gfx