Benchmarks For Ubuntu vs. OpenSolaris vs. FreeBSD
Ashmash writes "After their Mac OS X versus Ubuntu benchmarks earlier this month, Phoronix.com has now carried out a performance comparison between Ubuntu 8.10, OpenSolaris 2008.11 and FreeBSD 7.1. They used a dual quad-core workstation with the Phoronix Test Suite to run primarily Java, disk, and computational benchmarks. The 64-bit build of Ubuntu 8.10 was the fastest overall, but FreeBSD and OpenSolaris were first in other areas."
Various versions of GCC. While one could argue that the compiler is part of the OS it's indeed replaceable so I would had prefered if they had used the same version of GCC and not different for each OS.
It would had been very interesting to see the Solaris results using Sun Studios CC as well (I think it's also available for Linux nowadays?)