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From: Eric St-Laurent <ericstl34@sympatico.ca>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Lee Revell <rlrevell@joe-job.com>,
	tglx@linutronix.de, Maxim Levitsky <maximlevitsky@gmail.com>,
	linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Adrian Bunk <bunk@stusta.de>, Len Brown <lenb@kernel.org>
Subject: Re: [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far
Date: Tue, 20 Mar 2007 18:58:40 -0400	[thread overview]
Message-ID: <1174431520.6532.15.camel@perkele> (raw)
In-Reply-To: <1174382141.1158.61.camel@laptopd505.fenrus.org>

On Tue, 2007-20-03 at 10:15 +0100, Arjan van de Ven wrote:

> disabling that is a BAD idea. I'm no fan of SMM myself, but it's there,
> and we have to live with it. Disabling it without knowing what it does
> on your system is madness.
> 

Like Lee said, for "debugging", mainly trying to resolve unexplained
long latencies.

I've had a laptop that caused latency spikes with the cpu fan was turn
on. I tried disabling SMI to diagnose the problem with no success.

My current system has a BIOS feature to control fans speed according to
temperature. I presume this must a SMI to work right?  In this case it
should be possible to find and disable the related SMI and replace the
fan control with a user space software.

Of course it's not wise to blindly disable SMIs as we don't precisely
know what they do. 


- Eric



      parent reply	other threads:[~2007-03-20 22:58 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-03-16 10:30 Maxim Levitsky
2007-03-16 23:19 ` Len Brown
2007-03-17 23:00   ` Maxim
2007-03-17 23:32     ` Thomas Gleixner
2007-12-30  7:50       ` Mike Galbraith
2007-12-30 14:53         ` Ingo Molnar
2007-03-20 11:54     ` sysfs ugly timer interface (was Re: [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far) Pavel Machek
2007-03-22 15:28       ` Greg KH
2007-03-22 15:41         ` Thomas Gleixner
2007-03-23  1:24         ` sysfs q [was: sysfs ugly timer interface] Jan Engelhardt
2007-03-23  4:48           ` Greg KH
2007-03-23  6:05             ` Jan Engelhardt
2007-03-16 23:39 ` [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far Thomas Gleixner
2007-03-17 23:01   ` Maxim
2007-03-16 23:44 ` Thomas Gleixner
2007-03-17  0:04   ` [PATCH] i386: trust the PM-Timer calibration of the local APIC timer Thomas Gleixner
2007-03-17  7:22     ` Ingo Molnar
2007-03-17 13:24     ` Andi Kleen
2007-03-18  8:12     ` Andrew Morton
2007-03-18  8:45       ` Thomas Gleixner
2007-03-17  1:32   ` [BUG] 2.6.21-rc1,2,3 regressions on my system that I found so far Len Brown
2007-03-17  9:56     ` Thomas Gleixner
2007-03-17 11:05       ` Thomas Gleixner
2007-03-17 16:52       ` Thomas Gleixner
2007-03-17 10:32     ` Arjan van de Ven
2007-03-17 13:26       ` Andi Kleen
2007-03-20  4:27         ` Greg KH
2007-03-20  6:30           ` Thomas Gleixner
2007-03-20  9:14           ` Arjan van de Ven
2007-03-20 11:36           ` Andi Kleen
2007-03-20 11:41             ` Oliver Neukum
2007-03-17 22:45     ` Maxim
2007-03-20  5:04   ` Lee Revell
2007-03-20  5:36     ` Eric St-Laurent
2007-03-20  9:15       ` Arjan van de Ven
2007-03-20 18:04         ` Andy Lutomirski
2007-03-20 22:58         ` Eric St-Laurent [this message]

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