Date: Tue, 16 Sep 2008 16:12:22 +0200 From: Gary Jennejohn <gary.jennejohn@freenet.de> To: "Scott Gasch" <scott.gasch@gmail.com> Cc: freebsd-amd64@freebsd.org Subject: Re: irq19 interrupt storm? Message-ID: <20080916161222.125d15f5@peedub.jennejohn.org> In-Reply-To: <a174d0600809152257s31578fa0t6767967da712c189@mail.gmail.com> References: <a174d0600809152257s31578fa0t6767967da712c189@mail.gmail.com>
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On Mon, 15 Sep 2008 22:57:38 -0700 "Scott Gasch" <scott.gasch@gmail.com> wrote: > Hi, > > I'm running freebsd 7.0-RELEASE-p4 on a 4-core amd64 box. Nearly 100% of > 1 cpu is constantly being used handling irq19: uhci4 interrupts. This > seems to happen both with and without any USB devices plugged in: > > vmstat -i > interrupt total rate > irq1: atkbd0 5 0 > irq6: fdc0 1 0 > irq17: mskc0 dc0 1180547 18 > irq18: skc0 uhci2* 163250699 2512 > irq19: uhci4++ 3187989508 49072 I think the ++ here indicates that two or more devices are sharing this interrupt. Try doing "grep irq.*19 /var/run/dmesg.boot" to see which ones. One of these devices could be the culprit. --- Gary Jennejohn
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