\section{iostat}
\begin{frame}
   {iostat}

   \begin{itemize}
      \item
      Basic utility for monitoring all I/O activity
      \item
      Very flexible report options
      \begin{cmd}
$ iostat [OPTIONS]  [devices] [interval] [count]
      \end{cmd}
   \end{itemize}

   \begin{figure}[H]
      \includegraphics[width=4.2in]{IMAGES/iostat}
      \caption{iostat}
   \end{figure}


\end{frame}

\cprotect\note {

   \textbf{iostat} is the basic workhorse utility for monitoring I/O
   device activity on the system. It can generate reports with
   a lot of information, with the precise content controlled by
   options.


   After a brief summary of CPU utilization, I/O statistics are
   given: tps (I/O transactions per second; logical
   requests can be merged into one actual request), blocks read
   and written per unit time, where the blocks are generally
   sectors of 512 bytes; and the total blocks read and written.

   Information is broken out by disk partition (and if
   \textbf{LVM} is being used also by dm (device mapper)
   logical partitions).

   A more detailed report:

   \begin{figure}[H]
      \includegraphics[width=6.5in]{IMAGES/iostatxk}
      \caption{Using iostat}
   \end{figure}


}
