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\input{configpres}
\title{The Preempt RT Testsuite}
\maketitle
\subsection{Verification}
\begin{frame}
\frametitle{Testing Preempt RT Systems}
RT Tests:
\begin{itemize}
\item cyclictest
\item hwlatdetect
\item pi\_stress
\item signaltest
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Cyclictest}
\begin{itemize}
\item Originally developed by Thomas Gleixner for Preempt RT testing
\item High Resolution Timer test software
\item Creates any number of cyclic realtime tasks with varying priorities and varying intervals
\item Provides lots of debugging possibilities
\item Yields very significant results to determine the realtime behavior of a platform
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Load Scenarios}
Suitable load scenarios in order to create worst-case situations:
\begin{itemize}
\item CPU Load: ''hackbench'', orginally written for scheduler benchmarking
\item Interrupt Load: flood pinging (''ping -f'')
\item Serial/Network Load: ''top -d 0'' via console and network shell
\item Various Load Scenarios: ''stress-ng''
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{Pitfall!}
\begin{verbatim}
cat /proc/sys/kernel/sched_rt_runtime_us
\end{verbatim}
\begin{figure}
\centering
\includegraphics[height=0.4\textwidth]{images/pitfall.png}
\end{figure}
\end{frame}
\input{tailpres}
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