Ubuntu boot speed fall in Hardy

John McCabe-Dansted gmatht at gmail.com
Tue May 13 00:51:30 UTC 2008


\On Tue, May 13, 2008 at 5:12 AM, Krzysztof Lichota <krzysiek at lichota.net>
wrote:

> >  Where/how are these lists of blocks stored?
>
> They are stored in /prefetch directory as prefetch lists for each
> traced app and for boot stages.
> Each file contains list of tuples (device, inode, start-in-pages,
> length-in-pages) which describe what to prefetch.
>
...

> >  Could we use the lists to sort the LiveCD filesystem generation?
>
> It depends what you want to do with it. If you want to feed the list
> to mksquashfs, it can be done. If you want to add prefetching list to
> live CD, this would be harder, as inode numbers are generated during
> generation of SquashFS image.


Presumably we could generate the /prefetch after generating the squashfs and
just put it directly on the iso uncompressed?

-- 
John C. McCabe-Dansted
PhD Student
University of Western Australia
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