Speeding up live cd boot through optimizing file layout

[Matt Zimmerman]

On Mon, May 29, 2006 at 01:46:11AM +0200, Krzysztof Lichota wrote:
> I have taken a shot at optimizing boot speed of Kubuntu live CD by
> changing layout of files on CD (no changes to live CD contents).
> 
> First results are promising. By using naive approach to sort files by
> first access during boot, I have shortened boot time by 15-20 seconds
> (from 1:53s to 1:33s on desktop machine, from 2:07s to 1:52s on laptop).
> This is time reported by bootchart, probably time until desktop appears
> is further shrunk.
> 
> More details (including tools, bootcharts, sort file used for mksquashfs
> and ISO images) are on this page:
> http://lichota.net/~krzysiek/projects/kubuntu/dapper-livecd-optimization/
> 
> I will try to squeeze more from this live CD, it seems there is room for
> further improvements.
> 
> Verifications of results by some independent person would be welcome :)

I thought we were already sorting the squashfs; perhaps the ordering is out
of date?

-- 
 - mdz