Re: SBF queueing?

[patrick.mourlhon@wanadoo.fr]

Hi Gregory!

You might have a look on linux/Documentation/networking/policy-routing.txt

I think this was down by Alexey Kuznetov

You might have a look to iproute + tc and HOWTO on advanced networking

patrick mourlhon

On Sat, 27 Jan 2001, Gregory Maxwell wrote:

> Has anyone decided to code a SFB (Stochastic Fair Blue) queue implementation
> for Linux? It's been implemented for FreeBSD/ALTQ 
> (http://www.eecs.umich.edu/~wuchang/blue/). The paper for it shows it
> performing very well in comparison to RED.
> 
> It might be useful in a Linux implementation to be able to adjust what
> fields are hashed (I don't believe the initial implementation does this,
> though it has been a few months since I read the paper). 
> 
> For instance, on edge networks you hash src,dest,proto,sport,dport to
> allocate fairly by flow. On larger networks, hashing on each flow will
> require a fairly big filter to prevent collisions from punishing good flows
> because of a collision with an unresponsive flow. It might be useful to only
> hash on src on core networks, and potentially masked src on backbone transit
> networks (which would have nice social implications as well, produce an
> unresponsive flow and watch your entire subnet be slowed during networking
> congestion, thus edge networks would implement technology to detect and
> police unresponsive flows, something better done towards the edge). 
> 
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