Re: Apache Overload Behavior Under Linux [Kernel-Centric Question]

From: Rik van Riel (riel@conectiva.com.br)
Date: Fri Oct 06 2000 - 09:55:27 EST


On Fri, 6 Oct 2000, Stanislav Rost wrote:

> I am working on a research project involving the Linux kernel
> and Apache. Recently, I became puzzled by the overload behavior
> of Apache under cetrain conditions.

Search the linux-kernel archives for the terms
"wake one" and "wake all".

The 2.2.5 kernel you're using (why the hell are you using that?!?!)
only supports wake all semantics, meaning that ALL waiting httpd
processes get woken up on an incoming connection.

It would be interesting to see what happens if you also use a
2.4 kernel to do the same tests and compare the results...

regards,

Rik

--
"What you're running that piece of shit Gnome?!?!"
       -- Miguel de Icaza, UKUUG 2000

http://www.conectiva.com/ http://www.surriel.com/

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