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<html><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><!--Converted with jLaTeX2HTML 2002 (1.62) JA patch-1.4patched version by: Kenshi Muto, Debian Project.LaTeX2HTML 2002 (1.62),original version by: Nikos Drakos, CBLU, University of Leeds* revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan* with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --><HTML><HEAD><TITLE>33.1.3.0.2 Overall Statistics</TITLE><META NAME="description" CONTENT="33.1.3.0.2 Overall Statistics"><META NAME="keywords" CONTENT="everything"><META NAME="resource-type" CONTENT="document"><META NAME="distribution" CONTENT="global"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"><META NAME="Generator" CONTENT="jLaTeX2HTML v2002 JA patch-1.4"><META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"><LINK REL="STYLESHEET" HREF="everything.css" tppabs="http://www.isi.edu/nsnam/ns/doc/everything.css"><LINK REL="next" HREF="node437.html" 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tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html8105" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <BR><BR><!--End of Navigation Panel--><H4><A NAME="SECTION06413020000000000000">33.1.3.0.2 Overall Statistics</A></H4>In addition, each loss recovery and session object keeps track oftimes and statistics.In particular, each object records its<TT>startTime</TT>, <TT>serviceTime</TT>, <TT>distance</TT>, as are relevant to that object;startTime is the time that this object was created,serviceTime is the time for this object to complete its task, and thedistance is the one-way time to reach the remote peer.<P>For request objects, startTime is the time a packet loss is detected,serviceTime is the time to finally receive that packet,and distance is the distance to the original sender of the packet.For repair objects, startTime is the time that a request forretransmission is received, serviceTime is the time send a repair,and the distance is the distance to the original requester.For both types of objects, the serviceTime is normalized by thedistance.For the session object,startTime is the time that the agent joins the multicast group.serviceTime and distance are not relevant.<P>Each object also maintains statistics particular to that type of object.Request objects track the number of duplicate requests and repairs received,the number of requests sent, and the number of times this objecthad to backoff before finally receiving the data.Repair objects track the number of duplicate requests and repairs,as well as whether or not this object for this agent sent the repair.Session objects simply record the number of session messages sent.<P>The values of the timers and the statistics for each object are writtento the log file every time an object completes the error recovery functionit was tasked to do.The format of this trace file is:<PRE> \tup{prefix} \tup{id} \tup{times} \tup{stats}{\itshape{}where}\tup{prefix} is \tup{time} n \tup{node id} m \tup{msg id} r \tup{round} \tup{msg id} is expressed as \tup{source id:sequence number}\tup{id} is type \tup{of object}\tup{times} is list of key-value pairs of startTime, serviceTime, distance\tup{stats} is list of key-value pairs of per object statistics {\tt dupRQST}, {\tt dupREPR}, {\tt #sent}, {\tt backoff} {\itshape for request objects} {\tt dupRQST}, {\tt dupREPR}, {\tt #sent} {\itshape for repair objects} {\tt #sent} {\itshape for session objects}</PRE>The following sample output illustrates the output file format (the lineshave been folded to fit on the page):<PRE> 3.6274 n 0 m <1:1> r 1 type repair serviceTime 0.500222 \ startTime 3.5853553333333332 distance 0.0105 #sent 1 dupREPR 0 dupRQST 0 3.6417 n 1 m <1:1> r 2 type request serviceTime 2.66406 \ startTime 3.5542666666666665 distance 0.0105 backoff 1 #sent 1 dupREPR 0 dupRQST 0 3.6876 n 2 m <1:1> r 2 type request serviceTime 1.33406 \ startTime 3.5685333333333333 distance 0.021 backoff 1 #sent 0 dupREPR 0 dupRQST 0 3.7349 n 3 m <1:1> r 2 type request serviceTime 0.876812 \ startTime 3.5828000000000002 distance 0.032 backoff 1 #sent 0 dupREPR 0 dupRQST 0 3.7793 n 5 m <1:1> r 2 type request serviceTime 0.669063 \ startTime 3.5970666666666671 distance 0.042 backoff 1 #sent 0 dupREPR 0 dupRQST 0 3.7808 n 4 m <1:1> r 2 type request serviceTime 0.661192 \ startTime 3.5970666666666671 distance 0.0425 backoff 1 #sent 0 dupREPR 0 dupRQST 0</PRE><P><HR><!--Navigation Panel--><A NAME="tex2html8106" HREF="node437.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node437.html"><IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="file:/usr/share/latex2html/icons/next.png"></A> <A NAME="tex2html8100" HREF="node434.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node434.html"><IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="file:/usr/share/latex2html/icons/up.png"></A> <A NAME="tex2html8094" HREF="node435.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node435.html"><IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="file:/usr/share/latex2html/icons/prev.png"></A> <A NAME="tex2html8102" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html"><IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="file:/usr/share/latex2html/icons/contents.png"></A> <A NAME="tex2html8104" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html"><IMG WIDTH="43" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="index" SRC="file:/usr/share/latex2html/icons/index.png"></A> <BR><B> Next:</B> <A NAME="tex2html8107" HREF="node437.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node437.html">33.1.3.0.3 Miscellaneous Information</A><B> Up:</B> <A NAME="tex2html8101" HREF="node434.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node434.html">33.1.3 Statistics</A><B> Previous:</B> <A NAME="tex2html8095" HREF="node435.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node435.html">33.1.3.0.1 Data Loss</A>   <B> <A NAME="tex2html8103" HREF="node1.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node1.html">Contents</A></B>   <B> <A NAME="tex2html8105" HREF="node590.html" tppabs="http://www.isi.edu/nsnam/ns/doc/node590.html">Index</A></B> <!--End of Navigation Panel--><ADDRESS>2003-09-23</ADDRESS></BODY></HTML>⌨️ 快捷键说明
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