Difference between revisions of "Parallel RC Scripts"
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== Resources == | == Resources == | ||
=== Projects === | === Projects === | ||
| − | *InitNG: a new replacement for SysV init. Boots your system much faster by running as much as possible asynchronously. See [http://www.initng.org/ InitNG] | + | * InitNG: a new replacement for SysV init. Boots your system much faster by running as much as possible asynchronously. See [http://www.initng.org/ InitNG] |
| − | *IBM article on on using Makefile techniques to express dependencies between services | + | * IBM article on on using Makefile techniques to express dependencies between services and support parallel service start. See [http://www-106.ibm.com/developerworks/linux/library/l-boot.html?ca=dgr-lnxw04BootFaster BootFaster] |
| − | and support parallel service start. See | + | * Richard Gooch project to rewrite boot script system from scratch. Eliminates lots of BSD and SYS V-isms, and introduces dependencies. See [http://www.atnf.csiro.au/people/rgooch/linux/boot-scripts/ boot scripts] |
| − | [http://www-106.ibm.com/developerworks/linux/library/l-boot.html?ca=dgr-lnxw04BootFaster BootFaster] | + | * Serel project - for parallelizing service startup. Commands are inserted into RC scripts to cause needed services to start (based on XML database of dependencies). See [http://www.fastboot.org/ fastboot] |
| − | *Richard Gooch project to rewrite boot script system from scratch. Eliminates lots of | ||
| − | BSD and SYS V-isms, and introduces dependencies. See | ||
| − | [http://www.atnf.csiro.au/people/rgooch/linux/boot-scripts/ boot scripts] | ||
| − | *Serel project - for parallelizing service startup. Commands are inserted into RC scripts | ||
| − | to cause needed services to start (based on XML database of dependencies). See [http://www.fastboot.org/ fastboot] | ||
== Specifications == | == Specifications == | ||
| Line 41: | Line 36: | ||
== Case 2 == | == Case 2 == | ||
== Case 3 == | == Case 3 == | ||
| + | |||
| + | [[Category:HOWTOs]] | ||
Latest revision as of 03:18, 28 October 2011
Contents
Description
One way to reduce bootup time is to run RC scripts in parallel. RC scripts are normally run in sequence in a desktop configuration of Linux. By running the scripts in parallel, it is possible to take advantage of the multi-processing capabilities of the OS (such as overlapping execution with I/O, etc.)
How to implement or use
See the projects listed below for details on different methods of doing this.
Expected Improvement
[Not determined yet.]
Resources
Projects
- InitNG: a new replacement for SysV init. Boots your system much faster by running as much as possible asynchronously. See InitNG
- IBM article on on using Makefile techniques to express dependencies between services and support parallel service start. See BootFaster
- Richard Gooch project to rewrite boot script system from scratch. Eliminates lots of BSD and SYS V-isms, and introduces dependencies. See boot scripts
- Serel project - for parallelizing service startup. Commands are inserted into RC scripts to cause needed services to start (based on XML database of dependencies). See fastboot
Specifications
- LSB specification for comments in RC Scripts which allow parallization. See [1]
Patches
None.
Case Studies
[None yet.]
Case 1
[put information about an actual use of this technique here. A case study should include:]
Hardware:: [hardware description here] Kernel Version:: [kernel version here] Configuration:: [information about the configuration used here] Time without change:: [put that here] Time with change:: [put that here]
[Add any additional notes as you see fit.]
