Re: [PATCH] Work around for periodic do_gettimeofday hang

[Lee Revell]

On Thu, 2004-11-25 at 09:20 +0100, Arjan van de Ven wrote:
> HZ=1000 costs you 1% HPC performance, and for slower machines probably more. Also some hw (with slow smm) really doesn't likeit.

I actually profiled the timer ISR on a 600Mhz C3.  It runs for 22 usec.
So with HZ=1000 the residency of the timer interrupt is 2.2%.

Lee

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