From owner-freebsd-hackers Tue Mar 20 8:34:39 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from et-gw.etinc.com (et-gw.etinc.com [207.252.1.2]) by hub.freebsd.org (Postfix) with ESMTP id ACDA537B719 for ; Tue, 20 Mar 2001 08:34:33 -0800 (PST) (envelope-from dennis@etinc.com) Received: from dbsys.etinc.com (dbsys.etinc.com [207.252.1.18]) by et-gw.etinc.com (8.9.3/8.9.3) with ESMTP id LAA07017; Tue, 20 Mar 2001 11:35:22 GMT (envelope-from dennis@etinc.com) Message-Id: <5.0.0.25.0.20010320114644.01e961c0@mail.etinc.com> X-Sender: dennis@mail.etinc.com X-Mailer: QUALCOMM Windows Eudora Version 5.0 Date: Tue, 20 Mar 2001 11:50:53 -0500 To: =?iso-8859-1?Q?M=E5rten?= =?iso-8859-1?Q?_Wikstr=F6m?= From: Dennis Subject: RE: Routing latency Cc: "'freebsd-hackers@freebsd.org'" In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1"; format=flowed Content-Transfer-Encoding: quoted-printable Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG At 02:04 AM 03/20/2001, M=E5rten Wikstr=F6m wrote: >[snip] > > >triggers every second and steals too much cpu. So my > > question is, how can I > > >decrease this routing delay? > > Were you loading the interface, or just passing nominal > > streams? What pps > > did you pass through the box? Most likely the "delays" are > > only seen when > > the machine is close to capacity (the slow CPU you are using > > doesnt help). > >I sent 20000 packets/s, three UDP streams with 60, 200 and 1000 bytes sized >packets respectively. I also tried just one stream with 60 bytes packets= and >the same behaviour occured. 20k pps is probably beyond the capacity of a 200Mhz PPRO machine to forward= =20 on an ongoing basis (ie if other processes are running at the machine). the way the machine behaves over capacity is not as important as its=20 abiltiy to continue running. How it works during normal operations its what= =20 is important. Dennis To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message