From owner-freebsd-performance@FreeBSD.ORG  Wed Jun 25 05:41:44 2003
Return-Path: <owner-freebsd-performance@FreeBSD.ORG>
Delivered-To: freebsd-performance@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 4812837B401
	for <freebsd-performance@freebsd.org>;
	Wed, 25 Jun 2003 05:41:44 -0700 (PDT)
Received: from silver.he.iki.fi (silver.he.iki.fi [193.64.42.241])
	by mx1.FreeBSD.org (Postfix) with ESMTP id E1FC243FBD
	for <freebsd-performance@freebsd.org>;
	Wed, 25 Jun 2003 05:41:42 -0700 (PDT)	(envelope-from pete@he.iki.fi)
Received: from PETEX31 (gprs-prointernet-3e47d055.mobile.inet.fi
	[62.71.208.85])
	by silver.he.iki.fi (8.12.9/8.11.4) with SMTP id h5PCfTsL083042;
	Wed, 25 Jun 2003 15:41:33 +0300 (EEST)	(envelope-from pete@he.iki.fi)
Message-ID: <009901c33b17$1a5090c0$10d4473e@PETEX31>
From: "Petri Helenius" <pete@he.iki.fi>
To: "D. J. Bernstein" <djb@cr.yp.to>,
	<freebsd-performance@freebsd.org>
References:
	<20030625060629.51087.qmail@cr.yp.to><20030625023621.N17881-100000@mail.chesapeake.net>
	<20030625094301.56349.qmail@cr.yp.to>
Date: Wed, 25 Jun 2003 14:39:52 +0200
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 8bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2800.1158
X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
Subject: Re: ten thousand small processes
X-BeenThere: freebsd-performance@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Performance/tuning <freebsd-performance.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-performance>,
	<mailto:freebsd-performance-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-performance>
List-Post: <mailto:freebsd-performance@freebsd.org>
List-Help: <mailto:freebsd-performance-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-performance>,
	<mailto:freebsd-performance-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 25 Jun 2003 12:41:44 -0000

> or that use threads, or that allocate many file descriptors per process.
>
> I'm talking about _small_ processes. I'm talking about programs that
> might have quite a bit of code, and might read and write quite a lot of
> data, but that don't use much memory per process. The problem is that
> I'm talking about ten thousand of these processes running at once.
>

Why you want processes and not use threads? Running 10000 processes
"at once" requires 10000 execution units, I donīt think FreeBSD will run on
anything with more than 16 CPUs at this time.

Pete