Fedora 11 continued to perform much better at the disk tests when it came to Dbench too with twelve clients. Fedora 11 was nearly four times faster than Ubuntu 9.04!
Turning to the OpenMP-based GraphicsMagick for looking at the image manipulation performance, Ubuntu 9.04 was slightly faster. Fedora 11 had averaged 171 transactions per second while Ubuntu 9.04 was at 179 transactions per second, or about 5% faster, with the HWB color space conversion.
With local adaptive thresholding in GraphicsMagick, the results were identical between the Canonical and Red Hat operating systems.