linux-kernel - Re: Ondemand/Conservative not working with 2.6.18

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Date:	Mon, 16 Oct 2006 23:29:17 +0300
From:	"S.Çağlar Onur" <caglar@...dus.org.tr>
To:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>
Cc:	"Dave Jones" <davej@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: Ondemand/Conservative not working with 2.6.18

16 Eki 2006 Pts 16:08 tarihinde, Pallipadi, Venkatesh şunları yazmıştı: 
> Sorry for the delayed response. This is still very mysterious to me..
>
> Do you see anything interesting in dmesg after you try this ac adapter
> unplug and plug back routine? Can you send me the dmesg. Better still open
> a bugzilla at bugme.osdl.org and stick the dmesg and acpidump there.

No, nothing interested and i filled a bug [1] with all related info

> One possible reason for this is, somehow idle statistics is getting all
> wrong and ondemand thinks CPU is busy, even though it is idle. I have seen
> this happening earlier when there are issues with local APIC interrupts in
> deep C-states on dual core systems. But, here it is a single core CPU.
> Right? Can you also get the output of #cat /proc/interrupts; sleep 10; cat
> /proc/interrupts
> On your system when ondemand is not working and when it is working (After
> your unplug-plug workaround.

Hmm top show something weird;

Tasks:  39 total,   1 running,  38 sleeping,   0 stopped,   0 zombie
Cpu(s): 32.4%us, 12.4%sy,  0.0%ni, 41.1%id, 13.0%wa,  0.4%hi,  0.6%si,  0.0%st

There were nothing runs right that time but top reports only ~%40 idle [full 
log attached to bug]

[1] http://bugme.osdl.org/show_bug.cgi?id=7376
-- 
S.Çağlar Onur <caglar@...dus.org.tr>
http://cekirdek.pardus.org.tr/~caglar/

Linux is like living in a teepee. No Windows, no Gates and an Apache in house!

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