On Thu, 29 Dec 2011 19:25:03 +0100
Hagen Paul Pfeifer [off-list ref] wrote:

* Eric Dumazet | 2011-12-29 19:10:36 [+0100]:

quoted

I dont quite understand the question. The patch I posted is supposed to
fix the problem. What do you want to tell to the user ?

I assumed that the patch makes it possible to replace standard tfifo?! Tfifo
provides strict ordering, other qdisc's do not. So I thought if someone use
netem rate|jitter with e.g. SFQ then this should be mentioned somewhere. E.g.
"rate|jitter can only be used with tfifo qdisc". Correct me if I am wrong.

Cheers

This is actually a feature. It is documented that tfifo can be replaced
with pfifo. In other words, if default (tfifo) is used then packets
can be reordered by the delay/jitter values. But if pfifo (or other
qdisc) is used, the packets will not be reordered.