With the OCZ solid-state drive the GnuPG performance between the JFS, XFS, ReiserFS, and EXT3 file-systems were very close, but only with EXT4 did the performance actually drop. EXT4 was running about 4% slower than EXT3 with this 2GB file encryption test.
With the Sunflow Rendering System test the file-systems were more spread out. XFS and ReiserFS performed the fastest with the EXT4 implementation pulling in third place. Behind the EXT4 file-system was EXT3 and JFS.