Re: [LARTC] SFQ + RED

Linux Advanced Routing and Traffic Control

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On Tue, Dec 04, 2001 at 01:27:02PM -0500, Michael T. Babcock wrote:
> > The random variation in demand from other flows will have the effect
> > of jittering the maximum length of your subqueue, which is pretty
> > similar to what you experience with RED, isn't it?
> 
> Not quite, no.  The dropping of packets is based on actual calculations in
> RED that aren't available in SFQ.  SFQ drops _all_ the packets off the end
> and doesn't start doing so before congestion happens -- RED is designed to
> drop packets before getting overly congested so that the stream speeds stay
> steady and don't try to climb above what's available.

GRED might be what you want, if you can get anybody to explain you how it
works. I don't get it yet.

Regards,

bert

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