\section{Performance}

% -----------------------------------------------------------------
\begin{slide}{}

   \subsection{Experimental Method}

   \begin{sitem}
      \item DEC 3000/600 workstations (Alpha 21064 at 175MHz)
      \item 10Mbps Ethernet (Lance controller)
      \item Ping-pong tests; 10,000 round trips
      \item Each test repeated five times
      \item Latency: 1-byte, 100-byte, 200-byte,... 1000-byte messages
      \item Throughput: 1KB, 2KB, 4KB,... 32KB
      \item Protocol Graphs
   \end{sitem}

   \pichere{stack.eps,height=3.5in}
\end{slide}
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\begin{slide}{}

   \subsection{Round-Trip Latency ($\mu$s)}

\begin{center}
\begin{tabular}{l|l|l|l}
\hline
Message size (bytes) & UDP & TCP & RPC\\
\hline
1	&  279 &  365 &  428 \\
100	&  413 &  519 &  593 \\
200	&  572 &  691 &  753 \\
300	&  732 &  853 &  913 \\
400	&  898 & 1016 & 1079 \\
500	& 1067 & 1185 & 1247 \\
600	& 1226 & 1354 & 1406 \\
700	& 1386 & 1514 & 1566 \\
800	& 1551 & 1676 & 1733 \\
900	& 1719 & 1845 & 1901 \\
1000	& 1878 & 2015 & 2062 \\
\hline
\end{tabular}
\end{center}

   Per-Layer Latency
   \begin{sitem}
      \item ETH + wire: 216$\mu$s
      \item UDP/IP: 58$\mu$s
   \end{sitem}

\end{slide}
% -----------------------------------------------------------------
\begin{slide}{}

   \subsection{Throughput}

   \pichere{xput.eps,height=4in}
\end{slide}