From: Arjan van de Ven <arjan@infradead.org>
To: Mateusz Berezecki <mateuszb@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Linux 2.6 context switching and posix threads performance question
Date: Sat, 27 Aug 2005 14:58:09 +0200 [thread overview]
Message-ID: <1125147489.7756.10.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <20050827121158.GA18406@oepkgtn.mshome.net>
> I'm asking for some kind of an authoritative answer
> quite urgently. What is the optimum thread amount on 2 CPU SMP system
> running Linux ?
context switching in linux isn't THAT expensive compared to some other
operating systems, but it's not free either.
The optimum is obviously 2 threads, one for each cpu that processes your
network service in a state machine like way. This is why thttpd beats
apache by 10x if not more.
next prev parent reply other threads:[~2005-08-27 12:58 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-27 12:11 Mateusz Berezecki
2005-08-27 12:26 ` Peter Zijlstra
[not found] ` <aec8d6fc050827053047b1b667@mail.gmail.com>
2005-08-27 12:38 ` Peter Zijlstra
2005-08-27 12:58 ` Arjan van de Ven [this message]
2005-08-27 13:09 ` Con Kolivas
2005-08-27 14:43 ` Alan Cox
2005-08-28 23:20 ` James Courtier-Dutton
2005-08-30 17:46 ` Christoph Lameter
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