From owner-freebsd-stable Fri Feb 8 14:27:18 2002 Delivered-To: freebsd-stable@freebsd.org Received: from smtpproxy1.mitre.org (smtpproxy1.mitre.org [129.83.20.90]) by hub.freebsd.org (Postfix) with ESMTP id 595BB37B41C for ; Fri, 8 Feb 2002 14:27:14 -0800 (PST) Received: from avsrv1.mitre.org (avsrv1.mitre.org [129.83.20.58]) by smtpproxy1.mitre.org (8.11.3/8.11.3) with ESMTP id g18MR8811279; Fri, 8 Feb 2002 17:27:08 -0500 (EST) Received: from MAILHUB2 (mailhub2.mitre.org [129.83.221.18]) by smtpsrv1.mitre.org (8.11.3/8.11.3) with ESMTP id g18MR6k01315; Fri, 8 Feb 2002 17:27:06 -0500 (EST) Received: from dhcp-105-164.mitre.org (128.29.105.164) by mailhub2.mitre.org with SMTP id 9195622; Fri, 08 Feb 2002 17:27:04 -0500 Message-ID: <3C6450AE.7DC53BFB@mitre.org> Date: Fri, 08 Feb 2002 17:26:54 -0500 From: Jason Andresen Organization: The MITRE Corporation X-Mailer: Mozilla 4.75 [en]C-20000818M (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: All Mail Cc: freebsd-stable@freebsd.org Subject: Re: References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG All Mail wrote: > > Hello, > > I have upgraded to 4.5 and I'm noticing the following: > > # ping -f localhost > PING localhost (127.0.0.1): 56 data bytes > .............................................................................. > .............................................................................. > .............................................................................. > .............................................................................. > .............................................................................. > .............................................................................. > .............................................................................. > .............................................................................. > .............................................................................. > ....................................^C > --- localhost ping statistics --- > 3738 packets transmitted, 3000 packets received, 19% packet loss > round-trip min/avg/max/stddev = 0.008/0.013/0.399/0.024 ms > > It doesn't seem to matter how big the packets are either. Anyone know > what might cause this packet loss? Hmm. This is kind of interesting. 1. It's always 19-20% loss if you let it run for 400+ packets (almost always 19%) 2. This is on 4.4-STABLE from some time ago 3. The number of packets recieved is always a multiple of 100 when using the default packet size. 4. Machine speed doesn't seem to matter (it happes on an Athlon XP 1700+ and on a Pentium 166 Non-MMX). I can't help you track down the cause, but it is a neat effect. -- \ |_ _|__ __|_ \ __| Jason Andresen jandrese@mitre.org |\/ | | | / _| Network and Distributed Systems Engineer _| _|___| _| _|_\___| Office: 703-883-7755 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message