1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

SystemD Has New Shutdown Logic, Gives Everyone CGroups

Free Software

Published on 18 November 2010 11:44 PM EST
Written by Michael Larabel in Free Software
13 Comments

Fedora 14 was set to be the first major distribution shipping SystemD to replace SysVinit, but that ended up getting pushed back to the Fedora 15 release that will now come in May of 2011. Fortunately, for the developers behind Fedora and SystemD, this means the init replacement daemon will be in much better shape for its premiere. Lennart Poettering, the original developer of SystemD, has written about some of the recent improvements.

With the latest SystemD code, there is now fully C coded shutdown logic for handling the processes, a minimalistic readahead implementation (including support for Btrfs defragmentation on SSD/HDDs), SystemD now controls fsck and quota during the early boot process to ensure maximum parallelization, a kill argument for the systemctl command, support for activating encrypted LUKS/dm-crypt disks at boot-up and run-time, automatic clean-up of directories, safe destruction of all user sessions before going down, and many other changes.

With this new SystemD code, every service, every user, and every user session now gets its own cgroup (control group) in the CPU hierarchy. This is good news for that ~200 line kernel patch that does wonders as well as Lennart's own alternative to this kernel patch, but regardless it's an improvement in being more fair with accessing the CPU.

More details regarding these new SystemD features plus the rest can be found in Lennart's blog post. As far as the code is concerned, version 13 was just tagged in its Git code-base earlier today that sports all of this new work.

Besides Red Hat (who Lennart works for) pushing this new daemon into Fedora 15, it's also being looked at to use SystemD in openSUSE 11.4, Canonical is looking at it for Ubuntu, and there is progress on SystemD support for Debian too. This system and service manager for Linux is designed to be compatible with existing init scripts but to provide for greater parallelization of services at start-up, supports snapshotting and restoring of system states, and does a whole lot more than existing daemons.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. AMD's New Athlon/Semprons Give Old Phenom CPUs A Big Run For The Money
  2. 13-Way Low-End GPU Comparison With AMD's AM1 Athlon
  3. ASUS AM1I-A: A Mini-ITX Board For Socketed Kabini APUs
  4. Mini-Box M350: A Simple, Affordable Mini-ITX Case
Latest Linux Articles
  1. How Much Video RAM Is Needed For Catalyst R3 Graphics?
  2. Ubuntu 12.04 LTS vs. 14.04 LTS Cloud Benchmarks
  3. Ubuntu 12.04.4 vs. 13.10 vs. 14.04 LTS Desktop Benchmarks
  4. AMD OpenCL Performance With AM1 Kabini APUs
Latest Linux News
  1. OpenELEC 4.0 Beta 6 Works On 4K Graphics, RPi ALSA
  2. Linux 3.15 Lands Some DRM Graphics Driver Fixes
  3. AMD Is Disabling DPM Support For RV770 GPUs
  4. ReactOS Working On A Community Windows OS
  5. Borderlands Is Being Considered For Linux
  6. Mesa 10.0 & 10.1 Stable Get Updated
  7. Getting Hit By The Variable Performance Of The Public Cloud
  8. Git 2.0 Test Releases Begin With Many Changes
  9. Wine 1.7.17 Works On Its Task Scheduler, C Run-Time
  10. The Improv ARM Board Still Isn't Shipping; Riding A Dead Horse?
  11. Debian To Maintain 6.0 Squeeze As An LTS Release
  12. Wasteland 2 Is Finally Released For Linux Gamers
Latest Forum Discussions
  1. The GNOME Foundation Is Running Short On Money
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Catalyst 14.3 Beta
  4. Suggestions about how to make a Radeon HD 7790 work decently?
  5. Radeon 8000M problematic on Linux?
  6. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  7. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura
  8. Suspected PHP Proxy Issue