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From: Ivan Voras <ivoras@freebsd.org>
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Subject: Another Phoronix article
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Phoronix is not exactly the epitome of correct benchmarking but it 
appears that they've at least recently found out about the existence of 
error bars. :)

Anyway, here's another article comparing file systems: Dragonfly UFS, 
HAMMER, FreeBSD UFS, ZFS and Linux ext3, ext4, btrfs:

http://goo.gl/YA2VK

In summary: very varied results, some are expected (low parallel write 
small IOPS for FreeBSD), some are not (apparently the BSDs have a 
monopoly on high-performance gzip :) ). But overall, pretty good 
relative results for FreeBSD, better than earlier.