From owner-freebsd-net Mon Jun 26 12:38:20 2000 Delivered-To: freebsd-net@freebsd.org Received: from pooh.aist-nara.ac.jp (inet1.aist-nara.ac.jp [163.221.52.121]) by hub.freebsd.org (Postfix) with ESMTP id 3DE7D37BDD7 for ; Mon, 26 Jun 2000 12:38:17 -0700 (PDT) (envelope-from demizu@dd.iij4u.or.jp) Received: from localhost by pooh.aist-nara.ac.jp (8.8.7/2.8Wb) id TAA17805; Mon, 26 Jun 2000 19:37:52 GMT From: Noritoshi Demizu To: ccegongw@nus.edu.sg Cc: freebsd-net@freebsd.org Subject: Re: Equivalent in FreeBSD? In-Reply-To: Your message of "Sun, 25 Jun 2000 17:16:04 +0800" References: <4.3.2.7.0.20000625170617.00ad95c0@137.132.21.1> X-Mailer: Mew version 1.69 on Emacs 19.28.1 / Mule 2.3 X-URL: http://infonet.aist-nara.ac.jp/member/nori-d/ Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <20000627043751P.demizu@dd.iij4u.or.jp> Date: Tue, 27 Jun 2000 04:37:51 +0900 X-Dispatcher: impost version 0.99i (Apr. 6, 1997) Lines: 23 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org We are planning to release our experimental clustering code within a few weeks. Our code does: > 1. load sharing among many real servers, > 2. able to automatically detect failure real server and avoid > forwarding request to it - dispatching algorithm can be chosen from RR, WRR, LC, WLC - shared IP addresses are set to lo0 of servers automatically. However, - Because probing mechanism is implemented with independent daemons, our implementation cannot detect application level troubles including heavy paging (slashing?). - No code to calculate proper weights for each server. :-) - No takeover mechanism for balancing box. - No contents management mechanisms. - still under development. Best Regards, Noritoshi Demizu ps. We put kernel side code at the following URL for those who have interests. http://landwalker.aist-nara.ac.jp/cluster/tiny-las/ Userland code will be available soon after copyright issues are solved. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message