which is the cause of interrupts

[Gundalf]

On Sunday 03 June 2007 00:50:48 Folkert van Heusden wrote:
> Hi,
>
> Powertop 1.5 tells me:
>
> Wakeups-from-idle per second : 1161.0
> no ACPI power usage estimate available
>
> Top causes for wakeups:
>   49.3% (898.0)       <interrupt> : ehci_hcd:usb1, uhci_hcd:usb8, wcfxo
>   20.1% (366.4)       <interrupt> : ide0
>    7.4% (135.0)               bot : schedule_timeout (process_timeout)
>
> Now how can I find which device is triggering those "ehci_hcd:usb1,
> uhci_hcd:usb8, wcfxo" interrupts?
>
>
> Folkert van Heusden

Hi,

the best would be to paste your /proc/interrupts here. Do you have any 
usb-devices connected which may be frequently used to cause these massive 
cpu-usage.

Maximilian Scharsich