
This lecture is about achieving improved performance.
We discuss locality, false sharing, vectorization, and prefetching.
In addition, we examine tools for profiling, tuning, monitoring, tracing, debugging etc

Besides looking at the lecture slides, examine your OS manuals.

For OpenSuse Leap 15.2, please follow the link: https://doc.opensuse.org/ 
You can follow especially the tuning manual! 
(If you want to learn more about linux, follow the reference and startup manual
for Linux user/admin commands, kernel stuff etc. The security manual is not so
relevant now.)

These manuals for OpenSuse are provided by Oracle and they are great. 
