
systemd
systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux …
Frequently Asked Questions - systemd
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 …
systemd Coredump Handling
The systemd-coredump handler will extract a backtrace and ELF packaging metadata from any coredumps it receives and log both.
Running Services After the Network Is Up - systemd
systemd provides three target units related to network configuration: Network pre-configuration: network-pre.target. network-pre.target is used to order services before any network interfaces …
systemd-boot UEFI Boot Manager
systemd-boot is a UEFI boot manager which executes configured EFI images. The default entry is selected by a configured pattern (glob) or an on-screen menu. systemd-boot operates on the …
Diagnosing Boot Problems - systemd
After fixing /etc/fstab, run systemctl daemon-reload to let systemd refresh its view of it. If not even the emergency target works, you can boot directly into a shell with init=/bin/sh. This may be …
Users, Groups, UIDs and GIDs on systemd Systems
Users, Groups, UIDs and GIDs on systemd Systems. Here’s a summary of the requirements systemd (and Linux) make on UID/GID assignments and their ranges. Note that while in theory …
Control Group APIs and Delegation - systemd
So you are wondering about resource management with systemd, you know Linux control groups (cgroups) a bit and are trying to integrate your software with what systemd has to offer there. …
Using /tmp/ and /var/tmp/ Safely - systemd
By default, systemd-tmpfiles will apply a concept of ⚠️ “ageing” to all files and directories stored in /tmp/ and /var/tmp/. This means that files that have neither been changed nor read within a …
systemd Optimizations
systemd Optimizations So you are working on a Linux distribution or appliance and need very fast boot-ups? systemd can already offer boot times of < 1s for the Core OS (userspace only, i.e. …