Next month at Phoronix we intend to conduct a large benchmarking comparison of a few different operating systems. Right now we are looking at Ubuntu, Mac OS X (we will be waiting for 10.6 "Snow Leopard"), NetBSD, PC-BSD, OpenSolaris, and FreeBSD. We may throw in some others too. If there's any (non-Windows) OS you would like to see thrown into the mix, let us know in the forums. Each OS will be tested on the same system in their stock configuration, etc. With each operating system we will be carrying out a large number of tests.
We will be using the tests for what's in the Phoronix Test Suite
currently and the ones that get committed in the coming weeks. With that said, if there are any benchmarks not found in the Phoronix Test Suite you would like to see included in this big round of benchmarking, let us know ASAP. Ideally, you can also submit a PTS test profile to us too and we will be even happier :) So let us know in the forums
so we can begin preparing for this large OS performance comparison for September.