Devconf.cz 2023

"strace" is a low-level tool that can help you troubleshoot various issues happening in the userspace area: boot not happening, service failing to start, hang of commands, etc.
In this session, you will learn the basics about strace and how we use it inside Red Hat's support organization to troubleshoot userland issues.
After going through the basic usage and minimum technical details, we will show you use cases where strace can help and where strace won't help.
Finally we will go through 6 examples, illustrating various use cases, such as troubleshooting systemd service startup or a slow ssh connection.