From: Eric Dumazet <eric.dumazet@gmail.com>
To: Dominik Kaspar <dokaspar.ietf@gmail.com>
Cc: Carsten Wolff <carsten@wolffcarsten.de>, netdev@vger.kernel.org
Subject: Re: Linux TCP's Robustness to Multipath Packet Reordering
Date: Tue, 26 Apr 2011 23:08:12 +0200 [thread overview]
Message-ID: <1303852092.2699.11.camel@edumazet-laptop> (raw)
In-Reply-To: <BANLkTint2-Fg35T9SqWPm3nOaoc1d=ZEnQ@mail.gmail.com>
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.
>
next prev parent reply other threads:[~2011-04-26 21:08 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-25 10:37 Linux TCP's Robustness to Multipath Packet Reordering Dominik Kaspar
2011-04-25 11:25 ` Eric Dumazet
2011-04-25 14:35 ` Dominik Kaspar
2011-04-25 15:38 ` Eric Dumazet
2011-04-26 16:58 ` Dominik Kaspar
2011-04-26 17:10 ` Eric Dumazet
2011-04-26 18:00 ` Dominik Kaspar
2011-04-26 20:16 ` John Heffner
2011-04-26 21:27 ` Dominik Kaspar
2011-04-27 9:57 ` Carsten Wolff
2011-04-27 16:22 ` Dominik Kaspar
2011-04-27 16:36 ` Alexander Zimmermann
2011-06-21 11:25 ` Ilpo Järvinen
2011-06-21 11:34 ` Carsten Wolff
2011-06-21 11:46 ` Ilpo Järvinen
2011-04-27 16:48 ` Eric Dumazet
2011-04-27 17:39 ` Yuchung Cheng
2011-04-27 17:53 ` Alexander Zimmermann
2011-04-27 19:56 ` Dominik Kaspar
2011-04-27 21:41 ` Yuchung Cheng
2011-04-28 6:11 ` Alexander Zimmermann
2011-06-19 15:22 ` Dominik Kaspar
2011-06-19 15:38 ` Alexander Zimmermann
2011-06-19 16:25 ` Dominik Kaspar
2011-06-20 10:42 ` Ilpo Järvinen
2011-06-20 12:52 ` Dominik Kaspar
2011-06-21 11:35 ` Ilpo Järvinen
2011-04-26 20:43 ` Eric Dumazet
2011-04-26 21:04 ` Dominik Kaspar
2011-04-26 21:08 ` Eric Dumazet [this message]
2011-04-26 21:16 ` Dominik Kaspar
2011-04-26 21:17 ` Eric Dumazet
2011-04-25 12:59 ` Carsten Wolff
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