Disable Performance monitoring on F18

Michael Cronenworth mike at cchtml.com
Thu Mar 14 06:29:47 UTC 2013

On Thu Mar 14 2013 01:15:38 AM CDT, Kevin Wilson <wkevils at gmail.com> wrote:

> Hello,
> When I run cat "/proc/interrupts" I see:
> PMI:               111               120     Performance monitoring interrupts
> and these counters keep advancing.
> Are these Performance monitoring interrupts a result of some
> service/daemon ?

They come from NMI. They are harmless.
> Is there a way to disable Performance monitoring interrupts by some
> sysfs entry ?

If you really want to turn off NMI then you can add the following kernel command line argument: nmi_watchdog=0

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