bootchart : Performance analysis and visualization of the system boot process ( http://packages.ubuntu.com/lucid/bootchart )
punybench : A set of file system microbenchmarks ( http://git.chromium.org/gitweb/?s=punybench )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a chromiumos
For Paludis use this rsync : rsync://gentoo.zugaina.org/chromiumos-portage
If you have a problem : ycarus(-at-)zugaina.org