[Bug 110882] i[CI][SHARDS] igt at gem_mmap_gtt@forked-* - timeout - extremely slow on ICL

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110882

--- Comment #7 from Martin Peres <martin.peres at free.fr> ---
(In reply to Martin Peres from comment #6)
> (In reply to Chris Wilson from comment #5)
> > Temporary band-aid:
> > 
> > commit 6cb3d4a9457cdfb993ebb2a086a4844b85c49ee2 (upstream/master,
> > origin/master, origin/HEAD)
> > Author: Chris Wilson <chris at chris-wilson.co.uk>
> > Date:   Mon Jun 10 13:52:02 2019 +0100
> > 
> >     i915/gem_mmap_gtt: Disregard forked subtests on ICL for reasons
> >     
> >     Nothing to see here, please move along.
> >     
> >     The short story seems to be that a BIOS update made concurrent GTT
> >     access a few orders of magnitude slower, severely hampering CI. Where
> >     the fault actually lies is unknown, and how to circumvent it, unknown.
> >     
> >     References: https://bugs.freedesktop.org/show_bug.cgi?id=110882
> >     Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> >     Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
> >     Cc: Martin Peres <martin.peres at linux.intel.com>
> >     Acked-by: Daniel Vetter <daniel at ffwll.ch>
> 
> Thanks, it got rid of most of the issues. We still have the following tests
> being executed though:
> 
> Test                                  Machine     Min (s)  Avg (s)  Max (s)
> igt at gem_mmap_gtt@forked-big-copy      shard-iclb  803.781   937.90  1063.49
> igt at gem_mmap_gtt@forked-big-copy-odd  shard-iclb  974.263  1002.33  1044.71

My bad, we have not received the new results yet! Sorry for the noise!

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