FileVault

Tim Bray is telling us that FileVault slows down your system 4x on writes... Hmm, not good, I'd just decided to give it a go on the new Tiger install on my PowerBook. After confirming the comments that I'd heard about IntelliJ being faster on 1.5 - I'm obviously not getting an apple-for-apple comparison - it seems it would be faster still if FileVault were turned off. Most of the observed slowness is in compilation before running tests, which writes quite a few files to the file system.