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Date:      Tue, 31 Jul 2007 14:32:02 -0500
From:      "illoai@gmail.com" <illoai@gmail.com>
To:        "Gardner Bell" <gbell72@rogers.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: High interrupt count on irq12
Message-ID:  <d7195cff0707311232y4b87b6c2wc8e0c1354d69798a@mail.gmail.com>
In-Reply-To: <172019.94794.qm@web88014.mail.re2.yahoo.com>
References:  <172019.94794.qm@web88014.mail.re2.yahoo.com>

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On 31/07/07, Gardner Bell <gbell72@rogers.com> wrote:
> Since I installed -CURRENT, I've noticed irq12 has a rather high
> interrupt count for only 29mins of uptime.  Interrupt load appears to
> be rather low at only 0.4% so I'm not sure what can be causing the high
> count.  Here is the output of vmstat.
>
> dan@home$ vmstat -i
> interrupt                          total       rate
> irq1: atkbd0                        3011          1
> irq12: psm0                       121265         61
> irq14: ata0                           58          0
> irq19: uhci1+                       5181          2
> irq20: fxp0                         1377          0
> irq22: pcm0                           11          0
> cpu0: timer                      3812581       1923
> cpu1: timer                      3812247       1923
> Total                            7755731       3913
>
> My kernel is pretty much GENERIC except for the removal of drivers that
> I don't use/need, WITNESS, and INVARIANTS.

That doesn't look teriffically high, unless you
haven't touched your mouse at all.

For example, uhci0 (i have a usb mouse) generated
323 interrupts with about a second and a half of
mouse waving.

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