From owner-freebsd-questions@FreeBSD.ORG Sun Feb 24 12:49:56 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8BDB616A406 for ; Sun, 24 Feb 2008 12:49:56 +0000 (UTC) (envelope-from SRS0+sskP+73+lightray.org=dylan@internode.on.net) Received: from mail.internode.on.net (bld-mail04.adl2.internode.on.net [203.16.214.68]) by mx1.freebsd.org (Postfix) with ESMTP id BBA4713C44B for ; Sun, 24 Feb 2008 12:49:55 +0000 (UTC) (envelope-from SRS0+sskP+73+lightray.org=dylan@internode.on.net) Received: from [192.168.2.50] (unverified [59.167.69.19]) by mail.internode.on.net (SurgeMail 3.8f2) with ESMTP id 9872568-1927428 for ; Sun, 24 Feb 2008 23:04:39 +1030 (CDT) Message-ID: <47C1645D.1040703@lightray.org> Date: Sun, 24 Feb 2008 23:34:37 +1100 From: Dylan Smith User-Agent: Thunderbird 2.0.0.9 (X11/20080109) MIME-Version: 1.0 To: freebsd-questions@freebsd.org X-Enigmail-Version: 0.95.5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Normal CPU usage with a PPP connection X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Feb 2008 12:49:56 -0000 Hey guys, i'm running 6.3-R with (i think) userland ppp to connect to my ADSL provider over PPPoE. I build a number of graphs(mrtg) for system stats and i am noticing that under heavy load on my ppp connection, that is sustained 150KB/s for an hour or so my cpu usage, based on my graph, hovers around 20% (haven't looked at it in top yet but if there isn't a simple solution/reason for this i will look into what sort of usage it is). The box is a home router/server so at any 1 time isn't doing anything else that i can see would account for this. I also noticed that this usage increase does not occur with traffic coming/going on the inward facing interface, which regularly has transfer speeds around 10 MB/s. I'm running a AMD X2 3800+ with 2GB ram. Is this sort of usage normal? Is there something i can do to bring it down? Dylan