# vmstat 1
# watch -n1 cat /proc/interrupts
Go through lspci -vb and disable hardware that's not being used.
Watch the numbers as they increase. Also check for ERR and MIS
On 9/19/05, Rich Adamson <[EMAIL PROTECTED]> wrote:
> OK. Perhaps I was not clear. Please read my original post again:
>
> >>>> I've been trying to diagnose why my server has a constant idle time of 90%
> >>>> even when nothing is running.
>
> I did not say "90% usage" I said "90% idle". Meaning I have a constant CPU
> usage of 10%.
>
> This 10% measurement comes from the "hardware interrupt" (hi) from within
> "top":
>
> Cpu(s): 3.8% us, 2.1% sy, 0.0% ni, 85.5% id, 0.2% wa, 8.0% hi, 0.4% si
>
>
> Even when all other percentages are at 0%, hi remains around 10%. How can I
> figure out what is causing all these interrupts?
I don't have a clue other then to unload drivers, etc.
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