linux-kernel - Re: 20000+ wake-ups/second in 2.6.24. Bug?

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Message-ID: <4752C86D.8050909@rtr.ca>
Date:	Sun, 02 Dec 2007 09:59:57 -0500
From:	Mark Lord <lkml@....ca>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>, abelay@...ell.com,
	lenb@...nel.org, rjw@...k.pl, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: 20000+ wake-ups/second in 2.6.24.   Bug?

Adrian Bunk wrote:
> On Sat, Dec 01, 2007 at 06:43:39PM -0500, Mark Lord wrote:
>> Mark Lord wrote:
>>> Arjan van de Ven wrote:
>>>> On Fri, 30 Nov 2007 22:31:17 -0500
>>>> Mark Lord <lkml@....ca> wrote:
>> ...
>>>>> Speaking of which.. what's with powertop on 2.6.24 ???
>>>>> It's gone from 100-200 wakeups/sec to 20000 wakeups/sec !!!!!!!
>>>> ho hum.. Lenovo T61?
>>>> I have some reports that that happens once in a while (but it's not
>>>> limited to .24 and it's also real, it's not a powertop bug but it
>>>> actually is waking up that much)..
>>> ..
>>>
>>> No, it's my hefty Dell Inspiron 9400.
>>>
>>> And I just figured out the powertop:  it needed the kernel timers
>>> patch from the powertop site that was originally for 2.6.21..
>> ...
>>
>> Dagnabbit.. it's done it again.. went from 100-200 wakeups/sec
>> back up to 20000+ wakeups/sec.  This time *with* the powertop patches in place.
> 
> What is the status with an unpatched 2.6.23?
..

More wakeups than without patching, but still on the order of hundreds
of wakeups/sec; nowhere near the 20000+ wakeups/sec range when it goes wonky.

> Please send the output of "dmesg -s 1000000" for both 2.6.23 and 2.6.24.
..

Okay, I'll do a couple of reboots and collect that info for private email,
and maybe post a diff of the two here.

Cheers
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