high CPU activity for interrupts

[guru at Sisis.de]

El día Monday, November 14, 2005 a las 05:57:33PM +0100, Roland Smith escribió:

> On Mon, Nov 14, 2005 at 03:30:38PM +0100, guru at Sisis.de wrote:
> > 
> > Hello,
> > 
> > >From time to time I see an increasing temperature of the CPU of
> > my laptop and figured out that this has to do with a high load
> > of the CPU for 'interrupts' while the system itself is nearly
> > unused (only KDE with a few windows are up):
> > 
> > top(1) shows it like this:
> > 
> > CPU states:  0.8% user,  0.0% nice,  0.4% system, 22.9% interrupt,
> 76.0% idle
> > 
> > What could I do to figure out what's going on?
> 
> Run 'vmstat -i'. That'll show you what is generating the interrupts.

It seems to be this one:

$ vmstat -i
interrupt                          total       rate
irq0: clk                        3007441         99
irq1: atkbd0                       35757          1
irq4: sio0                             2          0
irq6: fdc0                            10          0
irq7:                                  1          0
stray irq7                             1          0
irq8: rtc                        3849029        127
irq9: acpi0                         2184          0
irq11: cbb1 pcm0++*             13344767        443
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
irq12: psm0                       131520          4
irq14: ata0                       170184          5
irq15: ata1                           77          0
Total                           20540973        682

What can I do?

	matthias
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