2.0.2

What's Changed

• add hyprland to default list of desktop environments by @russelltg in #101
• fix: sched_setscheduler() gets EINVAL for normal policies by @taoky in #105
• fix execsnoop example by @Umio-Yasuno in #113
• Correct SetForegroundProcess method name in README by @FriederHannenheim in #117
• Fix: remove sched=(fifo)49 from sound-server assignments by @gcentauri in #118

New Contributors

• @russelltg made their first contribution in #101
• @Umio-Yasuno made their first contribution in #113
• @FriederHannenheim made their first contribution in #117
• @gcentauri made their first contribution in #118

Full Changelog: 2.0.1...2.0.2

2.0.1

Fixes

• daemon: Early return on a kernel lacking SCHED_DEBUG which causes the service to not start
• daemon: Spawns the pipewire monitoring sub-process with /proc/self/exe
• pipewire: Prevents duplicate threads being spawned to monitor the same pipewire socket

Improvements

• Significant reduction in total memory and CPU consumption
  • Much faster access to process info from a PID lookup
  • Reduced heap allocations in hot paths for new process assignments
  • Added a garbage collection method to be called periodically

Chores

• config: Added schedtool to exceptions
• config: Added gamescope and some game launchers
• daemon: Some additional debug and trace logs
• just: Auto-detect path of execsnoop
• just: Use lld linker if available
• nix: Adds Nix flake

Full Changelog: 2.0.0...2.0.1

2.0.0

• Pipewire integration, which auto-assigns and retains a higher priority profile to PIDs connected to Pipewire
• Many performance optimizations
  • Eliminates most memory allocation by reusing buffers when reading files or building paths
  • Avoids performing UTF-8 string checks when not necessary, by using the bstr, atoi, and bytelines crates.
• Disables the kernel's autogroup feature by default so that nice priorities function properly
• Migrated from RON to KDL for configuration files
• Configuration files now have very flexible rules with many new options
• Now supports setting scheduler policies like SCHED_FIFO and SCHED_IDLE
• Assignments can be made based on conditions such as cgroups or parent processs
• Default configuration now automatically detects most system services without needing to explicitly name them
• The CFS profile service can be disabled in the config
• The process scheduler service can also be disabled
• The refresh rate of the process scheduler's PID monitoring service can be configured
• Foreground process assignments can be disabled by removing the foreground and/or background profile from the configuration file
• Pipewire integration can also be disabled by removing the pipewire profile assignment

1.2.1

Summary

• Fix high CPU usage when execsnoop-bpfcc fails to launch
• Adds configuration option to disable execsnoop even if it installed
• Adds pipewire processes to configuration to fix rtkit demotions on resume from suspend

See Commit History

1.2.0

Summary

• Process assignment configuration files now supports defining I/O classes and priorities
• New subcommand on command line for reloading the configuration files
• Support setting priorities to Flatpak processes
• Support setting priorities by the exe or process name
• Set process priority in realtime with execsnoop-bpfcc
  • The EXECSNOOP_PATH env must be defined when compiling to point to its path
  • The feature is of course conditional on the binary being found on the system
  • If not installed, there won't be any realtime adjustments to newly-created processes
• Added support for defining exceptions to the process adjustment rules
  • Requires execsnoop to unset inherited priorities in realtime
• Adds SteamVR processes to default config

See Commit History

1.1.0

• Sets kernel preempt to full on the responsive profile, and voluntary on battery.
• Adds more default priorities for common background processes
• Fixes priority assignments from config being overridden by background and foreground priority adjustments

See Commit History