Date: Thu, 30 Aug 2001 09:23:28 +0200 From: "Patrick O'Reilly" <patrick@mip.co.za> To: "Luigi Rizzo" <rizzo@aciri.org> Cc: <freebsd-ipfw@FreeBSD.ORG> Subject: RE: DUMMYNET Message-ID: <NDBBIMKICMDGDMNOOCAIOEEODGAA.patrick@mip.co.za> In-Reply-To: <200108291918.f7TJISr23873@iguana.aciri.org>
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Luigi, Agreed - the solution suggested is the way to go. The question re 1bit/s is that according to my observation it did NOT slow down to that rate, but continued to allow traffic at a much higher rate, though it did not appear to be UNLIMITED. This is obviously a moot point as no-one in their right mind (I clearly am excluded from that group :) would be using DUMMYNET to actually apply a bandwidth limit of 1bit/s. But, it begs the question: What is the lowest bandwidth which can be specified which DUMMYNET will be able to implement accurately? Anyhow - I don't want to waste any time on this now as an intelligent and elegant (and somewhat obvious) solution to my requirement has been given, and DUMMYNET has very successfully managed bandwidth down to as low as 8kbit/s in my experience. Thanks to all for your input! Patrick. -----Original Message----- From: Luigi Rizzo [mailto:rizzo@aciri.org] Sent: 29 August 2001 21:18 To: Patrick O'Reilly Cc: freebsd-ipfw@FreeBSD.ORG Subject: Re: DUMMYNET > Now I have changed cron to simply change the pipe config on the fly :"ipfw > pipe x config bw 32Kbit/s" to open it up, and :"ipfw pipe x config bw > 1bit/s" to shut it down. This way my counter values continue to > accumulate - GREAT! > > The problem is that the pipe seems to dislike the idea of running at 1 bit > per second. Obviously this is rather extreme! Any suggestions on how I as someone suggested, adding a rule in front of the pipe solves your problem more elegantly. But what is wrong with the pipe at 1 bit/s other than leaving packets go out albeit veeeeeery slooooooowly ? BTW changing HZ has no observable effect as such low speeds. cheers luigi To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ipfw" in the body of the message
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