From owner-freebsd-hackers Mon May 17 14:19:45 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from roma.coe.ufrj.br (roma.coe.ufrj.br [146.164.53.65]) by hub.freebsd.org (Postfix) with ESMTP id 7A0161566F for ; Mon, 17 May 1999 14:19:35 -0700 (PDT) (envelope-from jonny@jonny.eng.br) Received: (from jonny@localhost) by roma.coe.ufrj.br (8.8.8/8.8.8) id SAA14200; Mon, 17 May 1999 18:19:02 -0300 (EST) (envelope-from jonny) From: Joao Carlos Mendes Luis Message-Id: <199905172119.SAA14200@roma.coe.ufrj.br> Subject: Re: Seti project / stats reset, new version available In-Reply-To: <199905152126.OAA10724@apollo.backplane.com> from Matthew Dillon at "May 15, 1999 2:26: 1 pm" To: dillon@apollo.backplane.com (Matthew Dillon) Date: Mon, 17 May 1999 18:19:02 -0300 (EST) Cc: dg@root.com, hackers@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL43 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG #define quoting(Matthew Dillon) // This reduces the effect an idprio seti background task has on the rest of // the system. Yeah... I was going to ask just this. My users complained about server response after starting setiathome. // sysctl -w kern.quantum=20000 Humm, my systems are configured with a value with 10: krakatoa::root [650] sysctl kern | grep quantum kern.quantum: 10 This both in 3.1-stable (Early May) and 2.2.8-stable (latest). Are you talking about a 4.0-current setup ? // The default is 100,000 ( 100ms ) which, for a modern cpu, is // much more chunky then it needs to be. Reducing it to 20ms // makes a big difference. At 100000 I can feel the slow response // with seti running in the background. At 20000 it is much less // pronounced. What are the drawbacks of this ? More CPU time spent in context switches ? Jonny -- João Carlos Mendes Luís jonny@jonny.eng.br Networking Enginner jcml@ieee.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message