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Date: Sat, 24 Mar 2007 16:24:12 -0700
From: "Josh Carroll" <josh.carroll@gmail.com>
To: "Vlad GURDIGA" <gurdiga@gmail.com>
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References: <da7069940703241601i4de83223w6147f54a53005435@mail.gmail.com>
Cc: freebsd-questions@freebsd.org
Subject: Re: IRQ storm
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> I've changed motherboard recently (now it is Intel DP965LT) and now I
> have my PC slowed down considerably. vmstat -i shows a huge amount of
> interrupts on irq17: atapci0:

Do you have atapicam enabled or being loaded as a module? If so, I
have the same problem, which is currently being tracked in this PR:

http://www.freebsd.org/cgi/query-pr.cgi?pr=103602

A workaround, if you don't need/want to burn cds/dvds is to remove
atapicam or don't load the module at boot time.

Thanks,
Josh