this test seems to have been performed using a tarball that was not created on reiser4. Filesystems with sorted directories are very sensitive to whether a tarball was created on them or some other filesystem, and it makes a big difference if the readdir order is the same for both packing and unpacking. If the readdir order is different, it affects every test after that. His use of 8-10 year old hardware is also different from what we designed for: reiser4 does like to use a big CPU.
I suppose I should ask if he tested on the same partition for both filesystems, or gave ext3 the outside of the platter which is faster.
He really should do what I always do when testing products, and that is allow the makers to comment before publishing results. Everyone makes mistakes like these.
I of course tried emailing lwn but got no response.
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