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Hi all,<BR>
<BR>
<BR>
My name is Hugues Van Peteghem and I'm a PhD student at the University of Namur (Belgium). I'm trying to inject bursty losses into an experimental testbed using Netem, but it seems that the correlation argument of the Netem command line does not work fine. Does anybody can help me ? And does anybody has answered the following mail on the mailling list ?<BR>
<BR>
<TT><FONT SIZE="2">(from <A HREF="http://lists.osdl.org/mailman/htdig/netem/2005-August/000273.html">http://lists.osdl.org/mailman/htdig/netem/2005-August/000273.html</A>)</FONT></TT><BR>
<TT><FONT SIZE="2">Hi all,</FONT></TT><BR>
<BR>
<TT><FONT SIZE="2">I am trying to generate bursty loss using the command:</FONT></TT><BR>
<TT><FONT SIZE="2">"tc qdisc add dev eth1 root netem drop <percent> <correlation>"</FONT></TT><BR>
<BR>
<TT><FONT SIZE="2">Two things seem to go wrong:</FONT></TT><BR>
<TT><FONT SIZE="2">1- the loss does not show significant correlation correlated, even</FONT></TT><BR>
<TT><FONT SIZE="2">when I choose correlation 100%</FONT></TT><BR>
<TT><FONT SIZE="2">2- when correlation > 0, the measured loss rate is smaller</FONT></TT><BR>
<TT><FONT SIZE="2">than the <percent> I specify in the command. The larger the</FONT></TT><BR>
<TT><FONT SIZE="2">correlation, the smaller the loss rate I measure.</FONT></TT><BR>
<BR>
<TT><FONT SIZE="2">Is there a known bug or am I missing something (e.g. is</FONT></TT><BR>
<TT><FONT SIZE="2">the correlation in [0%,100%] or in [0,1]) ?</FONT></TT><BR>
<BR>
<TT><FONT SIZE="2">Thank you,</FONT></TT><BR>
<TT><FONT SIZE="2">Athina</FONT></TT><BR>
<BR>
Thancking you in advance :<BR>
<BR>
H<BR>
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--
Hugues Van Peteghem
PhD Student
Computer Science Institute
FUNDP - The University of Namur
Belgium
<A HREF="http://www.info.fundp.ac.be/~hvp/">http://www.info.fundp.ac.be/~hvp/</A>
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