netdev - RE: RE: A Linux TCP SACK Question

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Message-id: <000101c89fd0$98bbfd50$6b5ee183@D2GT6T71>
Date:	Wed, 16 Apr 2008 09:46:04 -0500
From:	Wenji Wu <wenji@...l.gov>
To:	'John Heffner' <johnwheffner@...il.com>
Cc:	'Ilpo Järvinen' <ilpo.jarvinen@...sinki.fi>,
	'Netdev' <netdev@...r.kernel.org>
Subject: RE: RE: A Linux TCP SACK Question

>Wenji, can you try this out?  Patch against net-2.6.26.

I just try with the new patch. It works, saturating the 1Gbps link.

The experiment works as:

      Sender --- Router --- Receiver

Iperf is sending from the sender to the receiver. In between there is an
emulated router which runs netem. The emulated router has two interfaces,
both with netem configured.  One interface emulates the forward path and the
other for the reverse path. Both netem interfaces are configured with 1.5ms
delay and 0.15ms variance. No packet drops. Kernel 2.6.25-rc9 patched with
the file you provided

Thanks,

wenji

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