finished the LaTeX script

.gitignore

@@ -23,7 +23,7 @@
 # *.pdf
 
 ## Generated if empty string is given at "Please type another file name for output:"
-.pdf
+*.pdf
 
 ## Bibliography auxiliary files (bibtex/biblatex/biber):
 *.bbl

LaTeX/Homework_Lesson_10.tex

@@ -0,0 +1,90 @@
+\documentclass[a4paper, 12pt, english]{article}
+
+\usepackage[utf8]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{listings}
+\usepackage{xcolor}
+\usepackage{hyperref}
+\usepackage{multicol}
+\usepackage{setspace}
+\usepackage{graphicx}
+
+
+\title{Advanced Operating Systems\\Assignment Week 10}
+\author{Paul Lödige \\ Student ID: 37-229753}
+
+\makeatletter
+\newcommand*{\toccontents}{\@starttoc{toc}}
+\makeatother
+
+\begin{document}
+\maketitle
+\toccontents
+
+\section{Assignment}%
+\label{sec:Assignment}
+Create a user-space program (any language is acceptable) 
+that differentiates the performance of the Linux Kernel with the PREEMPT\_ RT patches from that without the PREEMPT\_ RT patches.
+Compile and run the program.
+Submit the source code and the screen shots of the standard output and the kernel log message, respectively, when the program is being executed.
+\clearpage
+
+\section{Code}%
+\label{sec:Code}
+
+\definecolor{mGreen}{rgb}{0,0.6,0}
+\definecolor{mGray}{rgb}{0.5,0.5,0.5}
+\definecolor{mPurple}{rgb}{0.58,0,0.82}
+\definecolor{backgroundColour}{rgb}{0.95,0.95,0.92}
+\lstset{
+    language=bash,
+    backgroundcolor=\color{backgroundColour},   
+    commentstyle=\color{mGreen},
+    keywordstyle=\color{magenta},
+    numberstyle=\tiny\color{mGray},
+    stringstyle=\color{mPurple},
+    basicstyle=\ttfamily\scriptsize,
+    breakatwhitespace=false,         
+    breaklines=true,                 
+    captionpos=b,                    
+    keepspaces=true,                 
+    numbers=left,                    
+    firstnumber=0,
+    stepnumber=1,
+    numbersep=5pt,                  
+    showspaces=false,                
+    showstringspaces=false,
+    showtabs=false,                  
+    tabsize=2,
+    literate={~}{{$\mathtt{\sim}$}}1
+}
+\lstset{literate=%
+    {Ö}{{\"O}}1
+    {Ä}{{\"A}}1
+    {Ü}{{\"U}}1
+    {ß}{{\ss}}2
+    {ü}{{\"u}}1
+    {ä}{{\"a}}1
+    {ö}{{\"o}}1
+}
+
+The following code is just a shell script that makes use of two programs provided by the \texttt{rt-tests} package (Arch Linux).
+It uses the \texttt{hackbench} program to put stress on the system and then evaluates the maximum latency with the \texttt{cyclictest} program.
+This provides a much more reliable method of testing the real-time capabilites of the system than any self-developed code I was able to come up with.
+\lstinputlisting{../test.sh}
+The code is based on the following two sources:\\
+\url{https://wiki.archlinux.org/title/Realtime_kernel_patchset}\\
+\url{https://shuhaowu.com/blog/2022/02-linux-rt-appdev-part2.html}
+
+\section{Output}%
+\label{sec:Output}
+
+\subsection{with PREEMPT\_RT}%
+\label{sub:with PREEMPT RT}
+\includegraphics[width = \textwidth]{with_rt.png}
+
+\subsection{without PREEMPT\_RT}%
+\label{sub:without PREEMPT RT}
+\includegraphics[width = \textwidth]{without_rt.png}
+
+\end{document}

output.txt

@@ -0,0 +1,65 @@
+==================================================
+Linux advancedoperatingsystemsvm 6.0.5-2-rt14-MANJARO #1 SMP PREEMPT_RT Sun Nov 6 15:25:56 CET 2022 x86_64 GNU/Linux
+--------------------------------------------------
+Running in process mode with 10 groups using 40 file descriptors each (== 400 tasks)
+Each sender will pass 20000 messages of 100 bytes
+--------------------------------------------------
+# /dev/cpu_dma_latency set to 0us
+T: 0 (18229) P:80 I:200 C: 298471 Min:      3 Act:   66 Avg:   44 Max:    1060
+T: 1 (18230) P:80 I:200 C: 298210 Min:      3 Act:   15 Avg:   29 Max:    1078
+T: 2 (18231) P:80 I:200 C: 298354 Min:      3 Act:   28 Avg:   29 Max:    1051
+T: 3 (18232) P:80 I:200 C: 298247 Min:      3 Act:   43 Avg:   29 Max:    1046
+--------------------------------------------------
+Time: 77.677
+==================================================
+Linux advancedoperatingsystemsvm 6.0.11-1-MANJARO #1 SMP PREEMPT_DYNAMIC Fri Dec 2 21:23:52 UTC 2022 x86_64 GNU/Linux
+--------------------------------------------------
+Running in process mode with 10 groups using 40 file descriptors each (== 400 tasks)
+Each sender will pass 20000 messages of 100 bytes
+--------------------------------------------------
+Time: 42.581
+# /dev/cpu_dma_latency set to 0us
+T: 0 ( 2830) P:80 I:200 C: 297326 Min:      2 Act:  127 Avg:   38 Max:    2452
+T: 1 ( 2831) P:80 I:200 C: 297489 Min:      1 Act:   34 Avg:   52 Max:    2376
+T: 2 ( 2832) P:80 I:200 C: 297665 Min:      2 Act:   29 Avg:   33 Max:    2446
+T: 3 ( 2833) P:80 I:200 C: 297447 Min:      2 Act:   10 Avg:   32 Max:    2350
+--------------------------------------------------
+==================================================
+Linux advancedoperatingsystemsvm 6.0.11-1-MANJARO #1 SMP PREEMPT_DYNAMIC Fri Dec 2 21:23:52 UTC 2022 x86_64 GNU/Linux
+--------------------------------------------------
+Running in process mode with 10 groups using 40 file descriptors each (== 400 tasks)
+Each sender will pass 30000 messages of 100 bytes
+--------------------------------------------------
+Time: 54.930
+# /dev/cpu_dma_latency set to 0us
+T: 0 ( 6073) P:80 I:200 C: 297385 Min:      2 Act:   30 Avg:   30 Max:    1762
+T: 1 ( 6076) P:80 I:200 C: 297132 Min:      2 Act:   37 Avg:   34 Max:    1790
+T: 2 ( 6078) P:80 I:200 C: 296288 Min:      2 Act:   22 Avg:   27 Max:    1759
+T: 3 ( 6082) P:80 I:200 C: 297397 Min:      2 Act:   20 Avg:   50 Max:    1742
+--------------------------------------------------
+==================================================
+Linux advancedoperatingsystemsvm 6.0.11-1-MANJARO #1 SMP PREEMPT_DYNAMIC Fri Dec 2 21:23:52 UTC 2022 x86_64 GNU/Linux
+--------------------------------------------------
+Running in process mode with 10 groups using 40 file descriptors each (== 400 tasks)
+Each sender will pass 40000 messages of 100 bytes
+--------------------------------------------------
+# /dev/cpu_dma_latency set to 0us
+T: 0 ( 2846) P:80 I:200 C: 297642 Min:      3 Act:    8 Avg:   41 Max:   34750
+T: 1 ( 2847) P:80 I:200 C: 297348 Min:      3 Act:   17 Avg:   35 Max:   34712
+T: 2 ( 2848) P:80 I:200 C: 297864 Min:      3 Act:   58 Avg:   60 Max:   34786
+T: 3 ( 2849) P:80 I:200 C: 298013 Min:      3 Act:   50 Avg:   35 Max:   34711
+--------------------------------------------------
+Time: 89.334
+==================================================
+Linux advancedoperatingsystemsvm 6.0.5-2-rt14-MANJARO #1 SMP PREEMPT_RT Sun Nov 6 15:25:56 CET 2022 x86_64 GNU/Linux
+--------------------------------------------------
+Running in process mode with 10 groups using 40 file descriptors each (== 400 tasks)
+Each sender will pass 40000 messages of 100 bytes
+--------------------------------------------------
+# /dev/cpu_dma_latency set to 0us
+T: 0 ( 2872) P:80 I:200 C: 297927 Min:      2 Act:   51 Avg:   37 Max:    1756
+T: 1 ( 2873) P:80 I:200 C: 297834 Min:      2 Act:   29 Avg:   37 Max:    1726
+T: 2 ( 2874) P:80 I:200 C: 297550 Min:      3 Act:   31 Avg:   47 Max:    1815
+T: 3 ( 2875) P:80 I:200 C: 297519 Min:      3 Act:   34 Avg:   30 Max:    1743
+--------------------------------------------------
+Time: 153.851

test.sh

@@ -1,7 +1,8 @@
+#!/bin/bash
 echo "==================================================" >> output.txt
 uname -a >> output.txt
 echo "--------------------------------------------------" >> output.txt
-hackbench -l 20000 >> output.txt &
+hackbench -l 40000 >> output.txt &
 sleep 1
 echo "--------------------------------------------------" >> output.txt
 sudo cyclictest -q --mlockall --smp --priority=80 --interval=200 --distance=0 -D 1m >> output.txt