[Fedora-livecd-list] RFC: my plans for improving LiveCD boot speed with smart device mapper caching

[Douglas McClendon]

FYI- I've somewhat cryptically alluded to grand plans for improving 
LiveCD boot speed on this list in the past.

While I'm still quite some time from having the time to implement it, I 
did outline my method on squashfs-devel yesterday.

The basic idea is to replace all the disk seeks for file accesses during 
boot with a single long seek-less read, using a devicemapper trick which 
I've never seen used anywhere else, but which I'm 99.9% sure will work. 
  I will back off my prior predictions of halving boot time, but I still 
think 15%-25% speedup will happen...

http://sourceforge.net/mailarchive/forum.php?thread_name=d872d960801070247i73a7d032w7b499db16401e04e%40mail.gmail.com&forum_name=squashfs-devel

-dmc