Speeding up live cd boot through optimizing file layout

Hervé Fache Herve at lucidia.net
Mon May 29 18:48:44 BST 2006


In this case, the most used file should be close to the external edge!
This might mean at the end of the list?

Anyway, too late for Dapper.

On 5/29/06, Matt Zimmerman <mdz at ubuntu.com> wrote:
> On Mon, May 29, 2006 at 10:46:06AM -0300, Hervé Fache wrote:
> > Indeed, moving the squashfs at the end of the CD might make for a
> > higher speed, as most optical drives work with constant angular speed
> > (or 2 or 3 angular speeds that depend on head position), and therefore
> > have higher linear speed on the external edge.
>
> That seems unlikely to make much of a difference, as the squashfs occupies
> almost the entire disk anyway.  The position of files within the squashfs is
> a reasonable indicator or their position on the CD as well.


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