Re: Massive power regression going 3.4->3.5

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On Tue, 31 Jul 2012 09:06:42 +0100, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote:
> Actually, bad news: it looks like the problem is drm:
> 
> on 3.5 killing X causes idle power to go 14W -> 5.9W
> on 3.4.6 killing X causes idle power to go 6.8W -> 5.7W

The files that will be the most interesting to compare at first are:

/sys/kernel/debug/dri/0/i915_drpc_info
/sys/kernel/debug/dri/0/i915_cur_delayinfo
/sys/kernel/debug/dri/0/i915_fbc_status

However if it was simple regression in drm, then the bisect would have
continued to work despite the merge point jumping between 3.4 and 3.5,
right?

Thanks,
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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