CentOS 5.4 vs. OpenSuSE 11.2 vs. Ubuntu 9.10 Benchmarks
The performance was very close between OpenSuSE and Ubuntu when it came to the Dbench disk benchmark while CentOS 5.4 had fallen behind.
CentOS 5.4 came out on top when it came to the 2GB write performance with IOzone at 78MB/s while both OpenSuSE and Ubuntu were at 69MB/s.
The 2GB read performance between all three operating systems were close.