From owner-freebsd-hackers Wed Feb 27 18: 5:40 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from artemis.drwilco.net (diana.drwilco.net [66.48.127.79]) by hub.freebsd.org (Postfix) with ESMTP id 5353837B48F; Wed, 27 Feb 2002 18:05:05 -0800 (PST) Received: from ceres.drwilco.net (docwilco.xs4all.nl [213.84.68.230]) by artemis.drwilco.net (8.11.6/8.11.6) with ESMTP id g1S24uV12527 (using TLSv1/SSLv3 with cipher DES-CBC3-SHA (168 bits) verified NO); Wed, 27 Feb 2002 21:04:58 -0500 (EST) (envelope-from drwilco@drwilco.net) Message-Id: <5.1.0.14.0.20020228031412.01bf8190@mail.drwilco.net> X-Sender: lists@mail.drwilco.net X-Mailer: QUALCOMM Windows Eudora Version 5.1 Date: Thu, 28 Feb 2002 03:15:41 +0100 To: "Frost, Stephen C" , "'freebsd-questions@freebsd.org'" , "'freebsd-hackers@freebsd.org'" From: "Rogier R. Mulhuijzen" Subject: Re: FreeBSD, SMP and Performance Speeds? In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG >I have RTFM'd, with little luck. Can some enlightened soul impart knowledge >upon me, thus letting me know why any kernels compiled with SMP enabled seem >to be slowing the whole system down? Throughput goes down by 40%. Tasks >take twice as long to run, etc, etc... What sort of throughput? What sort of processes are you running? Do you actually have multiple processes fighting for CPU? Doc To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message