[Intel-gfx] [PATCH] drm/i915: increase default latency constant
jbarnes at virtuousgeek.org
Fri Aug 28 19:17:41 CEST 2009
On Tue, 18 Aug 2009 12:33:13 -0700
Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> Some i915/i945 platforms have a fairly high memory latency in certain
> situations, so increase our constant a bit to avoid FIFO underruns.
> The effect should be positive on other platforms as well; we'll have a
> bit more insurance against a busy memory subsystem due to the extra
> FIFO entries.
> Fixes fdo bug #23368.
FYI Eric, this has been biting a few users with low end configs; so I
think it should go into 2.6.31.
Jesse Barnes, Intel Open Source Technology Center
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