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Hi Martin, When I attended the LinuxWorld Expo in NYC back in January, I chatted with some folks at the AMD booth, as well as guys from Penguin Computing (where we bought our Opteron box). I was told that the Operton has this somewhat strange setup that the memory is controlled by one CPU. The net effect of this being that when both CPUs are running, one might only be running at around 90% instead of 99%. The `NUMA' kernel is supposed to fix this problem. I wonder if this is related to the performance of...

Sorry to ask here but never used a Xeon before. Tomorrow i need to install Centos 4.3 on a Quad Xeon (not dual core). Xeon is a 32 bit or 64 bit system? I already have centos 4.3 x86_64 on a Dvd and im not sure if i need to download another ISO or can I use the one i have? Again, sorry to ask. -- ------------------------------------------------------------ Erick Perez

Hi, Does Xen provide support for CPU frequency scaling? If there exists such support, from which version they support it? Otherwise what problems do exist in support frequency scaling in Xen? Thanks, Vahid _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Enable cpufreq support in Xen for AMD Operton processors by: 1) Allowing the PowerNow! driver in dom0 to write to the PowerNow! MSRs. 2) Adding the cpufreq notifier chain to time-xen.c in dom0. On a frequency change, a platform hypercall is performed to scale the frequency multiplier in the hypervisor. 3) Adding a platform hypercall to the hy...

Enable cpufreq support in Xen for AMD Operton processors by: 1) Allowing the PowerNow! driver in dom0 to write to the PowerNow! MSRs. 2) Adding the cpufreq notifier chain to time-xen.c in dom0. On a frequency change, a platform hypercall is performed to scale the frequency multiplier in the hypervisor. 3) Adding a platform hypercall to the hy...