Good stuff.
I see slightly more than 10% speedup with this on F-9 from end of grub to
until the KDE splash screen disappears. Ditto to until all apps that I have
on autostart after a small modification.
The modifications I made to /etc/event.d/readahead-collector.event were
commenting out the [ -f /.autorelabel ] test (no selinux here) as well as
increasing the sleep time in pre-stop script to 50 so that all the apps I
have on autostart get collected.