On Sun, 6 Jan 2008 14:00:05 -0600
jakllsch@kollasch.net wrote:

> Hi,
> 
> I have a uniprocessor amd64 system that is very sluggish
> when compiling now under 4.99.48's GENERIC.
> 
> top shows nearly-100% "system" usage when compiling,
> and zero when the system is idle.
> 
Check the interrupt load -- when I had such problems, I was seeing a
high rate of spurious interrupts.


		--Steve Bellovin, http://www.cs.columbia.edu/~smb