From owner-freebsd-net Tue Jul 3 20:44:42 2001 Delivered-To: freebsd-net@freebsd.org Received: from tomts13-srv.bellnexxia.net (tomts13.bellnexxia.net [209.226.175.34]) by hub.freebsd.org (Postfix) with ESMTP id D3B5D37B405 for ; Tue, 3 Jul 2001 20:44:38 -0700 (PDT) (envelope-from bjf@samurai.com) Received: from [192.168.1.34] ([65.92.97.21]) by tomts13-srv.bellnexxia.net (InterMail vM.4.01.03.16 201-229-121-116-20010115) with ESMTP id <20010704034438.ZHOK7196.tomts13-srv.bellnexxia.net@[192.168.1.34]>; Tue, 3 Jul 2001 23:44:38 -0400 Mime-Version: 1.0 X-Sender: bjf@mail.samurai.com Message-Id: In-Reply-To: <20010704023113.A40316@skriver.dk> References: <20010703004307.E2458@wjv.com> <20010704023113.A40316@skriver.dk> Date: Tue, 3 Jul 2001 23:32:15 -0400 To: Jesper Skriver From: Bryan Fullerton Subject: Re: PPPoE latency Cc: bv@wjv.com, net@FreeBSD.ORG Content-Type: text/plain; charset="us-ascii" ; format="flowed" Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org At 2:31 AM +0200 7/4/01, Jesper Skriver wrote: >You can't use that for measurement, on many router products the >process of replying to ICMP echo's (and generating other ICMP >messages) is a VERY low priority task, so if it's CPU is loaded >with other tasks, you will see a excessive latency in ping's to >that router, but you will probably see a much more normal delay to >a host behind it. Valid point - pinging the other end of my gateway is giving average responses in the 65ms range, pinging the core router behind it returns averages of 55ms. Still high, though. Bryan -- Bryan Fullerton http://bryanfullerton.com/ Core Competence uunet.ca!gts!cspace!bjf Samurai Consulting Can you feel the Ohmu call? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message