System and Service Manager systemd is a suite of basic building blocks for a Linux system. It provides a system and service manager that runs as PID 1 and starts the rest of the system.

systemd-boot reads simple and entirely generic boot loader configuration files; one file per boot loader entry to select from. All files need to reside on the ESP.

A: By default, systemd places all systemd daemons in their own cgroup in the “cpu” hierarchy. Unfortunately, due to a kernel limitation, this has the effect of disallowing RT entirely for the service.

This still needs some love in systemd upstream to be a smooth ride, but we definitely would like to go this way sooner or later, even for the normal desktops. Add an option for service units to temporarily …

systemd can interface with the boot loader to receive performance data and other information, and pass control information. This is only supported on EFI systems.

When you have systemd running to the extent that it can provide you with a shell, please use it to extract useful information for debugging. Boot with these parameters on the kernel command line:

systemd (since version 239) supports a concept of “Portable Services”. “Portable Services” are a delivery method for system services that uses two specific features of container management:

Its primary purpose is for ordering things properly at shutdown: since the shutdown ordering of units in systemd is the reverse of the startup ordering, any unit that has After=network.target can be sure that …

While we recommend usage of the systemd-coredump handler, it’s fully supported to use alternative coredump handlers instead. A similar implementation pattern is recommended.

The nss-systemd module will synthesize user records implicitly for all currently allocated dynamic users from this range. Thus, NSS-based user record resolving works correctly without those users being in …