linux-kernel - Re: Performance issue since 3.2.6

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Message-ID: <CAPPqfY3+e3tVQA_RKn0DhwModLienrgtFzsUrCCsUndbJfnHOg@mail.gmail.com>
Date:	Tue, 12 Feb 2013 22:09:24 +0100
From:	Olivier Doucet <webmaster@...ux.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org
Subject: Re: Performance issue since 3.2.6

Hello,

A quick update on my latest tests :
I was able to compile a working 3.7.1 kernel (by 'working', I mean
with no performance penalty). I'm sure 3.7.7 will be OK also (do you
want me to test latest RC of 3.8 ?)

I had to disable CONFIG_ACPI_PROCESSOR to disable power management.
So now these two options are unset :
CONFIG_CPU_IDLE
CONFIG_ACPI_PROCESSOR

I've posted the whole .config file here :
https://gist.github.com/odoucet/4773390

I'll be glad to test any patch that may help reactivate PM on my
system (CPU Intel Xeon L5630)

Olivier
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