(unexpectedly) bad performance of stackless and greenlet on PyPy
Hi! I've micro-benchmarked stackless and greenlet module in PyPy and was quite surprised with the results. According to this benchmark stackless.channel is 100x times slower on PyPy (vs Stackless) and greenlet is 20x times slower on PyPy (vs CPython). https://gist.github.com/4412582 Is this a bug in benchmark (or PyPy) or is it the expected current state of stackless features on PyPy? Cheers, Denis.
On Sun, Dec 30, 2012 at 2:24 PM, Denis Bilenko <denis.bilenko@gmail.com> wrote:
Hi!
I've micro-benchmarked stackless and greenlet module in PyPy and was quite surprised with the results. According to this benchmark stackless.channel is 100x times slower on PyPy (vs Stackless) and greenlet is 20x times slower on PyPy (vs CPython).
https://gist.github.com/4412582
Is this a bug in benchmark (or PyPy) or is it the expected current state of stackless features on PyPy?
Cheers, Denis. _______________________________________________ pypy-dev mailing list pypy-dev@python.org http://mail.python.org/mailman/listinfo/pypy-dev
This is at least partly expected because stackless and/or greenlets disable the JIT. It probably shouldn't be 100x though. There is an ongoing work to make this reason go away and then we can look what's left. Cheers, fijal
On Sun, Dec 30, 2012 at 5:53 PM, Maciej Fijalkowski <fijall@gmail.com> wrote:
On Sun, Dec 30, 2012 at 2:24 PM, Denis Bilenko <denis.bilenko@gmail.com> wrote:
Hi!
I've micro-benchmarked stackless and greenlet module in PyPy and was quite surprised with the results. According to this benchmark stackless.channel is 100x times slower on PyPy (vs Stackless) and greenlet is 20x times slower on PyPy (vs CPython).
https://gist.github.com/4412582
Is this a bug in benchmark (or PyPy) or is it the expected current state of stackless features on PyPy?
Cheers, Denis. _______________________________________________ pypy-dev mailing list pypy-dev@python.org http://mail.python.org/mailman/listinfo/pypy-dev
This is at least partly expected because stackless and/or greenlets disable the JIT. It probably shouldn't be 100x though. There is an ongoing work to make this reason go away and then we can look what's left.
Cheers, fijal
Hi Denis. I'm pleased to say that we're on the right track to merge JIT + stackless branch to pypy
participants (2)
-
Denis Bilenko -
Maciej Fijalkowski