From owner-freebsd-net Sat Aug 8 08:32:44 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA23680 for freebsd-net-outgoing; Sat, 8 Aug 1998 08:32:44 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from david.siemens.de (david.siemens.de [192.35.17.14]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id IAA23674 for ; Sat, 8 Aug 1998 08:32:42 -0700 (PDT) (envelope-from andre.albsmeier@mchp.siemens.de) X-Envelope-Sender-Is: andre.albsmeier@mchp.siemens.de (at relayer david.siemens.de) Received: from mail.siemens.de (salomon.siemens.de [139.23.33.13]) by david.siemens.de (8.9.1/8.9.1) with ESMTP id RAA04663 for ; Sat, 8 Aug 1998 17:32:22 +0200 (MET DST) Received: from curry.mchp.siemens.de (daemon@curry.mchp.siemens.de [146.180.31.23]) by mail.siemens.de (8.9.1/8.9.1) with ESMTP id RAA25427 for ; Sat, 8 Aug 1998 17:32:23 +0200 (MET DST) Received: (from daemon@localhost) by curry.mchp.siemens.de (8.8.8/8.8.8) id RAA22488 for ; Sat, 8 Aug 1998 17:32:24 +0200 (CEST) From: Andre Albsmeier Message-Id: <199808081532.RAA18920@internal> Subject: Does this impose a high load on a system? To: freebsd-net@FreeBSD.ORG Date: Sat, 8 Aug 1998 17:32:17 +0200 (CEST) Cc: freebsd-questions@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL40 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hello, I am running a nice little program named arpwatch. It collects information about new machines being attached to a network. I do this because I can monitor if someone links a new machine to our nets. For this operation, the network interface is put into promiscuous mode. IIRC, this means that all packets are passed to the kernel and maybe even all to the running program (arpwatch). I wonder if this causes a high load on the machine since I think it might have to process a lot of packages which normally would have thrown away. When looking at the arpwatch process, the time consumed is rather low but I don't know what's going on in a different place maybe... Thanks, -Andre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message