Hello there. I'd like to draw your attention to two feature requests / patches that I've subbmitted: http://bugs.python.org/issue9609 http://bugs.python.org/issue9622 These patches are the result of work that we have done in profiling Stackless Python server applications at runtime, but they apply just as well to C Python. The first patch makes _lsprof, the engine behind cProfile, multi-stack aware. This allows the same cProfiler.Profile() instance to be active on multiple python threads and still meaningful information is gathered. The second patch allows to set the trace/profile function in python globally, so that all threads are affected. This is essential if you want to take a profililng snapshot of a running application. We now use this extensively, to monitor the live behaviour of our EVE game servers. A HTTP backend server is used to control the profiler (profile.enable(), profile disable() at runtime) and explore its output. I haven't seen any feadback on these submissions and would appreciate some. Cheers, Kristján