Re: [PATCH 0/10] bulk cpu removal support

From: Ashok Raj
Date: Thu May 11 2006 - 13:27:11 EST


On Thu, May 11, 2006 at 10:02:15AM -0700, Andrew Morton wrote:
>
> OK, thanks. I'm a little surprised that this patch wasn't accompanied by a
> problem description, really. I mean, if a single CPU offlining takes three
> milliseconds then why bother?

It depends on whats running at the time... with some light load, i measured
wall clock time, i remember seeing 2 secs at times, but its been a long time
i did that.. so take that with a pinch :-)_

i will try to get those idle and load times worked out again... the best
i have is a 16 way, if i get help from big system oems i will send the
numbers out
>
> I assume it must take much longer, else you wouldn't have written the code.
> Have you any ballpark numbers for how long it _does_ take?

--
Cheers,
Ashok Raj
- Open Source Technology Center
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