From: Gerrit Renker <gerrit@erg.abdn.ac.uk>
To: dccp@vger.kernel.org
Subject: Sensitivity of TFRC throughput equation wrt to changes of RTT
Date: Fri, 13 Apr 2007 12:03:02 +0000 [thread overview]
Message-ID: <200704131303.03072@strip-the-willow> (raw)
The comment by Dave brought me back to check what a change of
a factor of 10 does to the throughput in TFRC.
RFC 3448 gives in section 8 the following alternative format
of the throughput equation (which is directly responsible for
the alllowed sending rate X):
s
X = --------
R * f(p)
This shows that the dependence is reciprocal. Thus using an RTT
which differs by a factor of 10 to account for in-stack processing
results an a throughput reduction of factor 10.
In other words, 90 Mbits/sec becomes 9 Mbits/sec.
next reply other threads:[~2007-04-13 12:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-13 12:03 Gerrit Renker [this message]
2007-04-13 19:33 ` Sensitivity of TFRC throughput equation wrt to changes of RTT David Miller
2007-04-13 19:52 ` Ian McDonald
2007-04-13 20:27 ` Gerrit Renker
2007-04-13 20:43 ` David Miller
2007-04-13 20:54 ` David Miller
2007-04-14 5:43 ` Eddie Kohler
2007-04-15 16:15 ` Gerrit Renker
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