What’s The Fastest Linux Filesystem On Cheap Flash Media?

“Compact Flash and SD storage cards are everywhere; gigabytes
for cheap in a tiny form factor. Most come formatted with VFAT. So
what is the fastest Linux filesystem for these little devices?

“Flash drives and SD Cards are getting bigger, faster and
cheaper. They’re not just for sucking down snaps from your pocket
camera any more: they’re backup storage, portable homedirs, netbook
expansion … you name it.

“Most arrive with a VFAT filesystem, and usually stay that way.
But for a lot of applications, this is not ideal. Curious if the
filesystem made any difference, we did what Feynman would have
done: tested some.

“For once, testing gave a pretty clear answer. So what is the
fastest filesystem linux folks can use on their flash media?”