Re: HT and idle = poll

Davide Libenzi (
Thu, 6 Mar 2003 11:52:42 -0800 (PST)

On Thu, 6 Mar 2003, Linus Torvalds wrote:

> But yes, at least for now, I really don't think you should really _ever_
> use "idle=poll" on HT-enabled hardware. The idle CPU's will just suck
> cycles from the real work.

Not only. The polling CPU will also shoot a strom of memory requests,
clobbering the CPU's memory I/O stages.

- Davide

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