From owner-freebsd-stable  Mon Jul 23 10: 9: 4 2001
Delivered-To: freebsd-stable@freebsd.org
Received: from schoolie.there.net (segv.bitslap.net [208.25.77.10])
	by hub.freebsd.org (Postfix) with ESMTP id 9D5E537B408
	for <freebsd-stable@FreeBSD.ORG>; Mon, 23 Jul 2001 10:08:56 -0700 (PDT)
	(envelope-from rrs@there.net)
Received: from localhost (localhost [127.0.0.1])
	by schoolie.there.net (Postfix) with ESMTP
	id ADFAD14327; Mon, 23 Jul 2001 10:09:45 -0700 (PDT)
Date: Mon, 23 Jul 2001 10:09:45 -0700 (PDT)
From: Rob Schulhof <rrs@there.net>
Reply-To: rrs@schoolie.there.net
To: Valentin Nechayev <netch@iv.nn.kiev.ua>
Cc: freebsd-stable@FreeBSD.ORG
Subject: Re: High interrupt rate
In-Reply-To: <20010723195655.A9663@iv.nn.kiev.ua>
Message-ID: <Pine.GSO.4.10.10107231006040.11362-100000@spork.there.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-stable@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-stable.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-stable>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-stable>
X-Loop: FreeBSD.ORG

Hello,

Thanks for reply.  I found that using the i8254 clock rather than the TSC
clock seemed to solve the problem, but perhaps it's merely coincidence. 

--Rob

On Mon, 23 Jul 2001, Valentin Nechayev wrote:

> Date: Mon, 23 Jul 2001 19:56:55 +0300
> From: Valentin Nechayev <netch@iv.nn.kiev.ua>
> To: rrs@schoolie.there.net
> Cc: freebsd-stable@FreeBSD.ORG
> Subject: Re: High interrupt rate
> 
>  Thu, Jul 19, 2001 at 20:35:42, rrs (Rob Schulhof) wrote about "High interrupt rate": 
> 
> > I'm puzzled why my system is spending 1% of CPU on system interrupts when
> > completely idle.  I even with avery thing killed except kernel proceses top
> > and vmstat show 0.8% is spent servicing interrupts.  A 'vmstat -i' shows the
> > only interrupts set are the CLK and RTC.   Anybody come across this?  I'm
> > assuming it's a hardware problem.
> 
> One my system constantly shows 12% interrupt time. LA does not reflect this.
> Possibly state checking interferes with some external activity.
> One should know that these times are very approximate.
> 
> 
> /netch
> 


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message