Speeding up live cd boot through optimizing file layout

[Krzysztof Lichota]

Krzysztof Lichota napisał(a):
> Krzysztof Lichota napisał(a):
>> I have tried putting these files at the edge and the results are 10
>> seconds worse. Apparently seeks are more frequent and throughput is not
>> an issue.
>> So sorting by first access gives currently the best results.
> 
> I have timed boot manually until desktop appears. The results are really
> interesting :)
> Optimized CD boots 60 seconds faster in comparison to plain CD with
> bootchart and about 35 seconds faster than original kubuntu RC1 live CD.
> I haven't measured optimized CD without bootchart yet :)
> 
> Exact results:
> Desktop - Athlon 1.2 Ghz, 256 MB RAM: Kubuntu with bootchart (3:44,
> 3:54), optimized CD with bootchart (2:47, 2:47), plain Kubuntu (3:22, 3:25)
> 
> I have updated my page
> http://lichota.net/~krzysiek/projects/kubuntu/dapper-livecd-optimization/
> with latest results and added description how to produce trace (for
> example for Ubuntu and Xubuntu).

I have results for plain Kubuntu (without bootchart) with optimized
layout by first access:
plain Kubuntu (3:22, 3:25), plain optimized CD  (2:22, 2:22)

60 seconds saved :)

	Krzysztof Lichota


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