4 x AMD Opteron 6128 testing with a and on CentOS 5.3 via the Phoronix Test Suite.
System Notes: SELinux: Enabled.
Processor: 4 x AMD Opteron 6128 @ 2.00GHz (4 Cores), Memory: 8192MB, Disk: 8GB
OS: CentOS 5.3, Kernel: 2.6.18-128.el5xen (x86_64), Compiler: GCC 4.1.2, File-System: ext3
System Notes: SELinux: Enabled.
Testing initiated at 30 November 2011 13:44 by user .
System Notes: SELinux: Enabled.
Testing initiated at 1 December 2011 13:10 by user .
System Notes: SELinux: Enabled.
Testing initiated at 2 December 2011 14:09 by user .
System Notes: SELinux: Enabled.
Testing initiated at 7 December 2011 08:15 by user .
System Notes: SELinux: Enabled.
Testing initiated at 8 December 2011 06:12 by user .
Processor: 4 x AMD Opteron 6128 @ 2.00GHz (4 Cores), Memory: 8192MB, Disk: 8GB
OS: CentOS 5.3, Kernel: 2.6.18-128.el5xen (x86_64), Compiler: GCC 4.1.2, File-System: ext3
System Notes: SELinux: Enabled.
Testing initiated at 8 December 2011 07:30 by user .