From owner-freebsd-current@FreeBSD.ORG Tue Oct 19 21:01:06 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 75DDB16A4CE for ; Tue, 19 Oct 2004 21:01:06 +0000 (GMT) Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 043A243D4C for ; Tue, 19 Oct 2004 21:01:04 +0000 (GMT) (envelope-from robert@fledge.watson.org) Received: from fledge.watson.org (localhost [127.0.0.1]) by fledge.watson.org (8.13.1/8.13.1) with ESMTP id i9JL0o1G080288; Tue, 19 Oct 2004 17:00:50 -0400 (EDT) (envelope-from robert@fledge.watson.org) Received: from localhost (robert@localhost)i9JL0ocZ080285; Tue, 19 Oct 2004 17:00:50 -0400 (EDT) (envelope-from robert@fledge.watson.org) Date: Tue, 19 Oct 2004 17:00:50 -0400 (EDT) From: Robert Watson X-Sender: robert@fledge.watson.org To: Andrew Gallatin In-Reply-To: <16750.34028.715601.329873@grasshopper.cs.duke.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-current@freebsd.org Subject: Re: mbuf leak with SMP and debug.mpsafenet=1 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Oct 2004 21:01:06 -0000 On Thu, 14 Oct 2004, Andrew Gallatin wrote: > Log into another host and do: > > % while 1 > while? ssh 'netstat -m | grep mbufs' > while? netperf224 -Hscream -tUDP_STREAM -l60 -- -m 1 >& /dev/null > while? end I must have missed this e-mail previously, sorry about the slow response. John Baldwin pointed me at it wondering why I hadn't answered, and that's why :-). Is the number of mbufs lost proportional to total run time since the start, or number of runs since start? I.e., if you shorten 60 seconds to 6 seconds but sample at the same rate, what impact does that have on the measured leakage? Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Principal Research Scientist, McAfee Research