Re: [PATCH] reduce top(1) CPU usage by an order of magnitude

[Andrew Morton]

Denis Vlasenko <vda@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Patch is not mine, Paulo Marques <pmarques@xxxxxxxxxxxx>
>  wrote it.
> 
>  I tested in on 2.6.9-rc2. top(1) CPU usage went from ~40% to ~4%
>  (yes, test box is a rather old piece of junk).
> 
>  The patch applies cleanly to 2.6.9.

umm, this patch has been in -mm for six weeks, and in Linus's kernel for
one week.
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