Features/20SecondStartup

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== Release Notes ==
 
== Release Notes ==
  
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''Note: all of the following release notes are subject to change.''
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To reduced boot time, the setroubleshoot and rpcbind daemon were made leaner to not consume too much disk I/O and CPU time. Core services are now started in parallel via upstart. sreadahead is now used to read ahead all disk blocks needed to boot the machine.
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<!-- The Fedora Release Notes inform end-users about what is new in the release.  Examples of past release notes are here: http://docs.fedoraproject.org/release-notes/ -->
 
<!-- The Fedora Release Notes inform end-users about what is new in the release.  Examples of past release notes are here: http://docs.fedoraproject.org/release-notes/ -->
 
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<!-- The release notes also help users know how to deal with platform changes such as ABIs/APIs, configuration or data file formats, or upgrade concerns.  If there are any such changes involved in this feature, indicate them here.  You can also link to upstream documentation if it satisfies this need.  This information forms the basis of the release notes edited by the documentation team and shipped with the release. -->

Revision as of 08:40, 10 December 2008


Contents

20SecondStartup

Summary

Boot faster than the F10 Features/30SecondStartup. Make Fedora boot and shut down faster. The goal is to be at the login screen in 20 seconds and be as fast as possible after the login (gnome-session).

Owner

Current status

  • Targeted release: Fedora 11
  • Last updated: (Dec 09 2008)
  • Percentage of completion: 0%

Detailed Description

Identify bloated tasks in the boot process and make them faster and use less disk I/O.

See: Fedora 10 top 5 disk usage tasks http://www.harald-hoyer.de/personal/blog/fedora-10-disk-io

See, if sreadahead can be used (needs kernel patch), and if upstart can start core service in parallel.

Benefit to Fedora

A faster boot makes for happy users.

Scope

Possibly involves all packages that are involved in the boot sequence, udev, module-init-tools, kernel, nash, upstart, readahead, setroubleshoot, gdm.

Test Plan

  • install bootchart
  • modify /sbin/bootchartd to exit on "firefox" not "gdm kdm" etc. and sleep 10-20 seconds after that
  • reboot, login, start firefox, close firefox
  • measure time until closing of firefox

User Experience

Turn on computer, wait 20 seconds, select user on login screen.

Dependencies

  • maybe kernel for sreadahead
  • module-init-tools
  • setroubleshoot-server
  • gdm login infrastrucure
  • rpcbind
  • no regression in other parts of the system

Contingency Plan

This is an incremental feature. If we don't quite get down to 20 seconds, too bad, we can just take whatever improvements we have.

Documentation

Fedora 10 top 5 disk usage tasks
http://www.harald-hoyer.de/personal/blog/fedora-10-disk-io
Upstart
http://upstart.ubuntu.com/wiki/
sreadahead
http://code.google.com/p/sreadahead/
setroubleshoot
https://fedorahosted.org/setroubleshoot/

Release Notes

Note: all of the following release notes are subject to change.

To reduced boot time, the setroubleshoot and rpcbind daemon were made leaner to not consume too much disk I/O and CPU time. Core services are now started in parallel via upstart. sreadahead is now used to read ahead all disk blocks needed to boot the machine.


Comments and Discussion