From: Wojtek Sawasciuk <voyo@punkt.pl>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] wee humble school (CBQ/SFQ problems)
Date: Tue, 01 Oct 2002 18:47:14 +0000 [thread overview]
Message-ID: <marc-lartc-103349811626651@msgid-missing> (raw)
In-Reply-To: <marc-lartc-103349513022944@msgid-missing>
On Tue, 1 Oct 2002, William Diehl III wrote:
> Greetings!
>
> As the network administrator of a small private university in Riverside, CA with little funding for bandwidth but 1500 on-campus students, I find it necessary to shape our 3mbit bonded T1s so that students don't clobber the staff (and perhaps vice versa). I've been a huge fan of linux traffic shaping since forever but have always had issues with the priority and the fairness.
>
> I come to you today with a problem. I need to be able to shape traffic and ensure fairness. Consequently, I have the following script which enables 3 cbq's with 3 levels of priority, the lowest (student queue) being limited to ony 2/3rds of the bandwidth (2mbit). Each class has an SFQ attached as well as an SFQ on the top class.
>
> The limit to 2mbit seems to function properly. However, neither the priority or the fairness seem to work. I get students downloading at 40-50KB/s, out performing a "high priority" address by 10x!! Also, one or two students can dominate the entire student class which says to me the SFQ is not doing its job.
try with esfq (www.ssi.bg/~alex/esfq/) or rebuild your flows with wrr
(wipl-wrr.sourceforge.net/wrr.html).
you can read about this things in list archive.
--
Wojtek Sawasciuk, net & sys administrator, ALT MAIL: voyo@gad.pl
http://GAD.pl - e-biznes, e-multimedia, | tel.: 077 44 14 105,
http://PUNKT.pl - lacza, hosting | fax: 077 45 31 222,
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prev parent reply other threads:[~2002-10-01 18:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-01 17:58 [LARTC] wee humble school (CBQ/SFQ problems) William Diehl III
2002-10-01 18:35 ` Stef Coene
2002-10-01 18:47 ` Wojtek Sawasciuk [this message]
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