search for: perfexplorer

...ative and interrupt modes counting (profiling) are supported. The advantage of Perfctr-Xen is that it does not require specific HVM extensions which are needed for vpmu driver, can work in paravirtualized mode, and it also quite universal: works with many common tools such as PAPI, HPCToolkit, TAU PerfExplorer. It supports proper per-domain and per-thread virtualization. It is light-weight, supports wide range of CPUs, does not require save-and-restore for accumulative mode of counting (it uses counter offsetting), avoids expensive hypercalls and counter re-programming in certain circumstances (when thre...