Re: Linux TCP's Robustness to Multipath Packet Reordering

Eric Dumazet
2011-04-26T21:08:17Z

Le mardi 26 avril 2011 à 23:04 +0200, Dominik Kaspar a écrit :

> In these experiments, a queue size of 1000 packets was specified. I am
> aware that this is typically referred to as "buffer bloat" and causes
> the RTT and the cwnd to grow excessively. The smaller I configure the
> queues, the more time it takes for TCP to "level up" to the aggregate
> throughput. By keeping the queues so large, I hope to more quickly
> identify the reason why TCP is actually able to adjust to the immense
> multipath reordering. What parameters could be highly relevant, other
> than the queue size?
>

losses of course ;)

Real internet is full of packet losses, and probability of these losses
depends on queue sizes (RED like AQM)

> Thanks for the tip about printing tc/netem statistics after each run,
> I will use "tc -s -d qdisc" next time.
>