ZFS vs ( VxFS | EXT3 | NTFS )

There is interesting entry at http://blogs.sun.com/Peerapong/entry/solaris_zfs_performance
about performance comparison of ZFS versus VxFS, ext3 and NTFS. While in almost all workloads ZFS is better or at least comparable to those three, in one of the most often met environments, OLTP with noncached, 8kB io (like Oracle on filesystem mounted without buffering - aka directio), VxFS is still almost three times faster then ZFS.