UDS Intrepid Platform Report

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Plans for 8.10

Place in this section bullet points of specific intended outcomes for the 8.10 development cycle.

• Outcome
• Outcome

Sessions

Session

19 May Round Table

Boot performance

We need faster boots for various reasons: mobile, laptop, etc. It's also just generally nice.

Overview

boot process spends a lot of time in initramfs:

• initramfs stuff written in shell -> slowish

• probing is fast, except for some systems like mobile stuff (ogra)
• cpu is finite, but fast
• ram is fast, we don't care about it much
• disk is really, really slow
• readahead is a static list that should be regenerated often to be really useful

• flash devices should not use readahead-->Detect type of disk.

• readahead is up to date after a new fresh install
• prefetch is a potential new way of doing what readahead does

Readahead problems: 1) operates on file-by-file basis 2) generating the lists is very difficult

Prefetch is kernel-level

• works on disk blocks => more efficient

• essentially self-updating
• however, needs some work to be actually usable (at least for this)
• documentation!

during boot, we're cpu bound during modprobe (via udev?). mobile is almost entirely cpu bound

• Keybuk: udev-settle is completely pointless, udev could just be started early
• plan to do that, is after intrepid, probably intrepid+1

• Artir:Use bootchart to check boot time changes caused by improvements.

rc2 is highly subjective to people's configurations (but we could benchmark default install)

mobile with fixed hardware may gain a lot of boot speed by compiling drivers into the kernel

X/gdm should start earlier, but this requires dbus+hal to be started earlier

Goal 25 secs?(On Core2Duo, 1 Gb Ram p.e.). Less on QuadCore systems?

Solutions

1. Use multithreading. Take advantage of multi-core systems.-->Detect processor.

2. Auto regenerative readahead and grub autoprofiler.

3. Preload&Prefetch&Grub auto-profiler by default

4. Restructure boot order

Plan for intrepid:

• prefetch
• Better multithreading
• dbus, hal moving to upstart
• elimiante udev settle
• stop X from stating like crazy at startup.(Kernal based modesetting)

20 May Round Table

Ubuntu Distributed Development - Importer

• Aim to have all of Ubuntu, and possibly Debian imported during the
  • Intrepid cycle.
• Use the upcoming features in bzr and launchpad to make it very quick
  • to make small changes.

OpenOffice.org upload schedule

• preferred upload timeframe 1 week before milestone release.
• Estimated upload of 3.0rc - Alpha 4
• Estimated upload of 3.0 - Alpha 6

• http://wiki.services.openoffice.org/wiki/OOoRelease30

OpenOffice.org language packs

21 May Round Table

• Notes
• Notes

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