From: Lee Revell <rlrevell@joe-job.com>
To: Jon Masters <jcm@redhat.com>
Cc: linux-rt-users@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
williams <williams@redhat.com>,
"Luis Claudio R. Goncalves" <lgoncalv@redhat.com>
Subject: Re: [RT] [RFC] simple SMI detector
Date: Fri, 23 Jan 2009 21:33:37 -0500 [thread overview]
Message-ID: <75b66ecd0901231833j2fda4554sb0f47457ab838566@mail.gmail.com> (raw)
In-Reply-To: <1232751312.3990.59.camel@perihelion.bos.jonmasters.org>
On Fri, Jan 23, 2009 at 5:55 PM, Jon Masters <jcm@redhat.com> wrote:
> Here's a simple SMI detector we've been playing around with internally.
> In case anyone wants to play with it, and especially help clean it up :)
>
> SMI events are particularly unhelpful on Real Time systems because we
> effectively have the CPU stolen from under us. We can't prevent this
> easily without BIOS vendors/system vendor co-operation, but we can help
> to diagnose and log that these are occuring...which can be very helpful
> too.
>
FYI the RTAI project has a patch to allow disabling of SMI:
https://listas.upv.es/pipermail/rtlinuxgpl/2007-April/000609.html
Lee
next prev parent reply other threads:[~2009-01-24 2:33 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-23 22:55 [RT] [RFC] simple SMI detector Jon Masters
2009-01-24 2:33 ` Lee Revell [this message]
2009-01-24 16:30 ` Thomas Gleixner
2009-01-25 0:57 ` Jon Masters
2009-01-25 2:12 ` Sven-Thorsten Dietrich
2009-01-25 4:02 ` Theodore Tso
2009-01-25 9:40 ` Thomas Gleixner
2009-01-25 11:49 ` Bastien ROUCARIES
2009-01-25 15:04 ` Clark Williams
2009-01-25 21:41 ` Jon Masters
2009-01-25 21:38 ` Jon Masters
2009-01-25 9:34 ` Thomas Gleixner
2009-01-25 14:07 ` Henrique de Moraes Holschuh
2009-01-25 22:52 ` Mike Kravetz
2009-01-26 17:51 ` Jon Masters
2009-01-27 2:23 ` Lee Revell
2009-01-27 2:48 ` Keith Mannthey
2009-01-27 11:22 ` Pavel Machek
2009-01-27 15:17 ` Jon Masters
2009-01-27 18:00 ` Len Brown
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