High interrupt count on irq12

[illoai at gmail.com]

On 31/07/07, Gardner Bell <gbell72 at 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 at 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.

-- 
--