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From: Paul P Komkoff Jr <i@stingr.net>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: [Dumb question] 100k RTC interrupts/sec on SMP system: why?
Date: Thu, 9 Nov 2006 13:09:53 +0300	[thread overview]
Message-ID: <20061109100953.GE2226@stingr.net> (raw)

Hi.

I have a couple of old SMP systems (Dual P3 on Intel STL2 boards), on
which I experience the following:
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
 0  0      0 800752  45376 143064    0    0     0     8 96607   65  0 0 100  0  0
 0  0      0 800752  45376 143064    0    0     0     0 96439   57  0 0 100  0  0

It's a completely idle system. Interrupts are coming from rtc.
This is a stock fedora SMP kernel.

IIRC, some time ago (years) I've read that rtc can be used somehow in
SMP but I don't remember the specifics. So, maybe you are familiar
with this and can give out a quick answer - what this 100K
interrupts/sec are about, and how to get rid of them (if possible).

Thanks!

-- 
Paul P 'Stingray' Komkoff Jr // http://stingr.net/key <- my pgp key
 This message represents the official view of the voices in my head

             reply	other threads:[~2006-11-09 10:10 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-09 10:09 Paul P Komkoff Jr [this message]
2006-11-10  4:41 ` Andrew Morton
2006-11-10 12:35   ` Paul P Komkoff Jr
2006-11-10 13:00     ` Arjan van de Ven
2006-11-10 13:15       ` Paul P Komkoff Jr
2006-11-10 13:35       ` Paul P Komkoff Jr
2006-11-10 13:43         ` Arjan van de Ven
2007-01-04 19:44           ` Len Brown

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