On Fri, Feb 12, 2016 at 08:00:23AM -0800, Paul wrote: > > PyPy typically needs more than 2000 iterations to be warmed up. > > > > Same goes for the JVM. Off the top of my head it doesn't even start marking a > method as hot until around 10,000 iterations (at which point it'll start to > do the first stage of optimisations). If you're below that threshold you're > dealing with pure interpreter performance.
To be clear, what I called an "iteration" is one in-process run of an entire benchmark. Each benchmark will invoke tons of methods and execute tons of user loops. 2000 in-process iterations should be plenty enough to warm up the VMs. Most benchmarking experiments take only around 30 post-warmup in-process iterations (enough to compute a confidence interval). The well-behaved benchmark/vm pairs in our experiment warmup in less than ten in-process iterations. Cheers -- Best Regards Edd Barrett http://www.theunixzoo.co.uk _______________________________________________ Speed mailing list Speed@python.org https://mail.python.org/mailman/listinfo/speed
