Pipe queues

Julian Elischer julian at elischer.org
Tue Dec 11 00:37:05 PST 2007

rihad wrote:
> Peter Jeremy wrote:
>> On Tue, Dec 11, 2007 at 09:21:17AM +0400, rihad wrote:
>>> And if I _only_ want to shape IP traffic to given speed, without 
>>> prioritizing anything, do I still need queues? This was the whole point.
>> No you don't.  I'm using pipes without queues extensively to simulate
>> WANs without bothering with any prioritisation.
> Great! One fine point remains, though:
> # ipfw pipe 1 config bw 128Kbit/s
> will use a queue of 50 slots by default. What good are they for, if I 
> didn't ask for queuing in the first place?

You can't limit throughput unless you have somewhere to 
put the packets that arrive to quickly.
Unless you just want to throw away any packet that 
gets to you a little too quickly? ... I didn't think so.
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