Live CD Performance

Status

• Created: Date(2005-04-23T03:04:58Z) by MattZimmermanBR

• Priority: MediumPriorityBR

• People: MatthewGarrettLead, FabioDiNittoSecondBR

• Contributors: MattZimmermanBR

• Interested: BR

• Status: BrainDump, BreezyGoal, UduBof, DistroSpecificationBR

• Branch: BR

• Malone Bug: BR

• Packages: BR

• Depends: BR

• UduSessions: 1, 4, 8, etc BR

Introduction

The boot time for the Ubuntu live CD should be comparable (or superior) to other popular live CDs.

Rationale

Scope and Use Cases

Implementation Plan

Performance issues in two areas:

1) Installer

Can generation of locales be made faster? Background things like network setup? X session

2) Post-di boot

Readahead configuration may be suboptimal Do we need gdm?

NEEDS INSTRUMENTATION - do we have detailed enough logfiles?

Data Preservation and Migration

Packages Affected

User Interface Requirements

Outstanding Issues

UDU BOF Agenda

• d-i performance
• casper performance

• Ubuntu boot performance (FasterBoot)

UDU Pre-Work

• Profile the live CD boot sequence to measure the time taken for each step
  • d-i startup (time-to-first-question)
  • Pre-casper d-i activity (measured per menu entry)
  • Casper d-i activity (measured per casper.d script)
  • Standard boot sequence