linux-kernel - Re: [3.9-rc1] very poor interrupt responses

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Message-ID: <7791757.cgjzv69Ulu@vostro.rjw.lan>
Date:	Mon, 11 Mar 2013 04:38:31 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Shawn Starr <shawn.starr@...ers.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [3.9-rc1] very poor interrupt responses

On Friday, March 08, 2013 02:12:33 PM Shawn Starr wrote:
> Hello folks,
> 
> I am noticing since rc0 and now rc1, very poor interrupt handling. Keyboard response, mouse movements, display refreshing etc. General input/display sluggishness. Did something break IRQ handling somewhere? I need to validate if this happens with X not running also if it is i915 related somehow. The behavor is noticed in a console login however.

Please try to disable the intel_pstate driver by putting intel_pstate=disable
into the kernel's command line and see if that helps (you may also try to
compile the driver out).

Thanks,
Rafael

-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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