BootSpeed
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| A full investigation to improve boot speed has been performed for i386, targeting the Dell Mini 9. This led to significant improvements in speed for many people, with many sorts of hardware. Compared to other software solutions, Ubuntu boots relatively slowly on ARM hardware: there may be architecture-specific reasons for this, which ought be investigated and fixed. | A full investigation to improve boot speed has been performed for i386, targeting the Dell Mini 9. This led to significant improvements in speed for many people, with many sorts of hardware. Compared to other software solutions, Ubuntu boots relatively slowly on ARM hardware: there may be architecture-specific reasons for this, which ought be investigated and fixed. Since the i386 investigations (Lucid) there was no Ubuntu-wide effort to improve on the boot speed or at least not regress, and in some cases current images boot slower than they used to. |
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| This section should describe a plan of action (the "how") to implement the changes discussed. Could include subsections like: | Bootchart will be used to measure the boot process on a Panda board (OMAP4) Biggest offenders will be investigated. Packages not needed or very unlikely to be useful for ARM are going to be removed from the image if they affect boot speed. X/GDM/Unity-2D specific fast login possibility will be investigated. |
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| Should cover changes required to the UI, or specific UI that is required to implement this | |
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| Code changes should include an overview of what needs to change, and in some cases even the specific details. | |
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Include: * data migration, if any * redirects from old URLs to new ones, if any * how users will be pointed to the new way of doing things, if necessary. |
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| This should highlight any issues that should be addressed in further specifications, and not problems with the specification itself; since any specification with problems cannot be approved. | |
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| Use this section to take notes during the BoF; if you keep it in the approved spec, use it for summarising what was discussed and note any options that were rejected. |
Launchpad Entry: other-o-arm-boot-speed
Created: 2011-04-22
Contributors: Jani Monoses
Packages affected:
Summary
Iteratively investigate the boot process for preinstalled images on ARM. Find slow points or blockers. Optimise where feasible.
Release Note
Ubuntu 11.10 is now able to boot in ${TIME} on ${HARDWARE}!!!
Rationale
A full investigation to improve boot speed has been performed for i386, targeting the Dell Mini 9. This led to significant improvements in speed for many people, with many sorts of hardware. Compared to other software solutions, Ubuntu boots relatively slowly on ARM hardware: there may be architecture-specific reasons for this, which ought be investigated and fixed. Since the i386 investigations (Lucid) there was no Ubuntu-wide effort to improve on the boot speed or at least not regress, and in some cases current images boot slower than they used to.
User stories
Assumptions
Design
Implementation
Bootchart will be used to measure the boot process on a Panda board (OMAP4) Biggest offenders will be investigated. Packages not needed or very unlikely to be useful for ARM are going to be removed from the image if they affect boot speed. X/GDM/Unity-2D specific fast login possibility will be investigated.
UI Changes
Code Changes
Migration
Test/Demo Plan
It's important that we are able to test new features, and demonstrate them to users. Use this section to describe a short plan that anybody can follow that demonstrates the feature is working. This can then be used during testing, and to show off after release. Please add an entry to http://testcases.qa.ubuntu.com/Coverage/NewFeatures for tracking test coverage.
This need not be added or completed until the specification is nearing beta.
Unresolved issues
BoF agenda and discussion
ARM/Specs/BootSpeed (last edited 2011-05-26 07:37:37 by 188-24-95-166)