[Intel-gfx] [PATCH igt] lib/igt_aux: Framework for measuring latency in raising signals

[Chris Wilson]

On Fri, Mar 18, 2016 at 07:16:37PM +0000, Chris Wilson wrote:
> Not sure how best to put this to use yet, we need a set of benchmarks to
> track changes as well as a few hard fail criteria. But at least this is a
> start towards measuring how long we block signals whilst in the driver.

I think I'm leaning towards using an ioctl preloader to measure
siglatency of real applications and asking who actually cares about
siglatency within the render thread? X and other single threaded
monoliths. struct_mutex contention being far more important. So write a
tool to poke around applications and wait some future fireworks.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre