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To: linux-kernel@vger.kernel.org
From: torvalds@transmeta.com (Linus Torvalds)
Subject: Re: [ANNOUNCE] Native POSIX Thread Library 0.1
Date: Fri, 20 Sep 2002 06:01:47 +0000 (UTC)
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In article <Pine.LNX.4.44L.0209192323530.1857-100000@imladris.surriel.com>,
Rik van Riel  <riel@conectiva.com.br> wrote:
>On Thu, 19 Sep 2002, Larry McVoy wrote:
>> On Thu, Sep 19, 2002 at 11:01:33PM -0300, Rik van Riel wrote:
>
>> > So, where did you put those 800 MB of kernel stacks needed for
>> > 100,000 threads ?
>>
>> Come on, you and I normally agree, but 100,000 threads?  Where is the
>> need for that?
>
>I agree, it's pretty silly. But still, I was curious how they
>managed to achieve it ;)

You didn't read the post carefully.

They started and waited for 100,000 threads.

They did not have them all running at the same time. I think the
original post said something like "up to 50 at a time".

Basically, the benchmark was how _fast_ thread creation is, not now many
you can run at the same time. 100k threads at once is crazy, but you can
do it now on 64-bit architectures if you really want to.

		Linus
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