Date: Tue, 20 Mar 2001 11:50:53 -0500 From: Dennis <dennis@etinc.com> To: =?iso-8859-1?Q?M=E5rten?= =?iso-8859-1?Q?_Wikstr=F6m?= <Marten.Wikstrom@framfab.se> Cc: "'freebsd-hackers@freebsd.org'" <freebsd-hackers@FreeBSD.ORG> Subject: RE: Routing latency Message-ID: <5.0.0.25.0.20010320114644.01e961c0@mail.etinc.com> In-Reply-To: <E6D22E487D45D411931B00508BCF93E75C0331@storeg001.framfab.s e>
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At 02:04 AM 03/20/2001, Mårten Wikström 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 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 abiltiy to continue running. How it works during normal operations its what is important. Dennis To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the messagehelp
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