"For comparing the performance of Mac OS X "Leopard"
and Ubuntu "Intrepid Ibex" we had used the Phoronix Test Suite 1.4
"Orkdal" release. The Phoronix Test Suite supports benchmarking
across Linux, FreeBSD, OpenSolaris, and Mac OS X operating systems.
This release codenamed Orkdal occurred just earlier in the week and
includes a number of enhancements to this GPLv3 licensed software.
The tests we used were derived from the Darwin test suite and
consisted of Nexuiz, Urban Terror, LAME MP3 encoding, Ogg encoding,
FFmpeg, timed PHP compilation, timed ImageMagick compilation, timed
7-Zip compression, timed Gzip compression, Bonnie++, GnuPG, BYTE
Unix Benchmark, SQLite, Tandem XML, Sunflow Rendering System, Bork
File Encrypter, and Java SciMark."