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DateFri, 25 May 2007 14:52:54 -0700
FromAndrew Morton <>
SubjectRe: idle=poll burns my box [was Re: 2.6.22-rc2-mm1]
On Fri, 25 May 2007 23:20:25 +0200 "J.A. Magallón" <jamagallon@ono.com> wrote:

> Is idle=poll a quick and dirty way to burn your box in flames ?

yep ;)  It makes the CPU(s) busy-wait when they have nothing else to do.

It was originally added as a thing to maybe save a few cycles of latency
in responding to interrupts.  It's now useful as a trick to prevent oprofile
from producing confusing numbers.  I don't think it has any other uses.
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