I ran blockbench on a HAMMER partition and on a UFS partition and got some rather interesting results. I fully expected HAMMER's write performance to be bad compared to UFS, because HAMMER is still double-buffering its data. Indeed, as the test began UFS seemed to be outdoing HAMMER. But as the number of files grew and the kernel started to have to recycle vnodes and buffers, UFS's performance went completely to hell while HAMMER was able to maintain good ...