From Fedora Project Wiki
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;Fedora 10 top 5 disk usage tasks
;Fedora 10 top 5 disk usage tasks
:http://www.harald-hoyer.de/personal/blog/fedora-10-disk-io
:http://www.harald-hoyer.de/personal/blog/fedora-10-disk-io
;Fedora 10 - Boot Analysis
:https://www.harald-hoyer.de/personal/blog/fedora-10-boot-analysis
;Upstart
;Upstart
:http://upstart.ubuntu.com/wiki/
:http://upstart.ubuntu.com/wiki/

Revision as of 07:29, 17 December 2008


🔗 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 15 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
Fedora 10 - Boot Analysis
https://www.harald-hoyer.de/personal/blog/fedora-10-boot-analysis
Upstart
http://upstart.ubuntu.com/wiki/
sreadahead
http://code.google.com/p/sreadahead/
setroubleshoot
https://fedorahosted.org/setroubleshoot/

🔗 Filed Bugs

🔗 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