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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
Message-ID:  <20010723195655.A9663@iv.nn.kiev.ua>
In-Reply-To: <Pine.GSO.4.10.10107192025530.8104-100000@spork.there.net>; from rrs@there.net on Thu, Jul 19, 2001 at 08:35:42PM -0700
References:  <Pine.GSO.4.10.10107192025530.8104-100000@spork.there.net>

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 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

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