Boot-time improvements

Krzysztof Lichota krzysiek at
Fri Sep 12 07:35:18 UTC 2008

2008/9/12 Timo Jyrinki <timo.jyrinki at>:
> 2008/9/11 Krzysztof Lichota <krzysiek at>:
>> As an author of Prefetch, I cannot agree that it would not fix seeks ;)
>> Part of my implementation, not enabled by default as it is highly
>> experimental, is ext3 defragmenter which puts all files for prefetch
>> in one place on disk, so the requests to read them can be merged into
>> big streaming reads.
> I stand happily corrected :) Hopefully you will get some help in
> testing the defragmenter and getting that part stable in time, too.
> The hard part in the whole prefetch is probably it being kernel-based,
> but the diff [1] seemed quite non-invasive, ie. only a few calls in
> the existing kernel code and then some new calls.

Thanks. There are some rough edges in patches themselves which should
be straightened out. And the feedback on using prefetch was pretty
much non-existing.


	Krzysztof Lichota

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