Description of problem: xenperf fails with: Error getting number of perf counters: 38 (Function not implemented) Version-Release number of selected component (if applicable): xen-3.0.3-64.el5_2.1 How reproducible: always Steps to Reproduce: just start xenperf
xenperf fails because the hypervisor is not built with performance counters. So, this is not a bug. If you think they should be enabled, please reopen the bug and state your business case for this feature.