[Twisted-Python] Twisted on Jython

Glyph glyph at twistedmatrix.com
Mon Mar 11 17:21:05 EDT 2013

On Mar 11, 2013, at 10:30 AM, Tobias Oberstein <tobias.oberstein at tavendo.de> wrote:

>> Note that the primary missing criterion from this ticket is the presence of a buildbot running Jython.  Any chance you'd want to contribute another bot for this purpose?
> Hi Glyph,
> Ok. Makes sense. That would likely bring up some issues with Jython/Twisted then, which we could address ..
> Apart from that, my guess is that another important area might be reactor support .. as far as I can see Jython as some Posix wrappers which makes it run on Windows only with the less-than-stellar Windows-Select stuff, not IOCP or such. Same might apply to BSDs and Linux (don't know if they have wrappers for kqeue/epoll).
> At least from my totally unscientific performance measurements with Autobahn/Twisted, Jython/SELECT is slower than CPython/IOCP, not to speak of PyPy on stuff like kqueue/epoll ..

This is to be expected; Jython generally isn't very fast.  If you want speed, use PyPy; it's going to be considerably faster than everything else.

If you want to make a Jython-specific reactor for performance or platform-feature reasons, that would be a separate task, well after the basic select reactor and all of our support code works on Jython :).


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