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Postings from October 2010
Hi all, Tom (shabble, CCed to this message) has written CProps-Trie which provides Perl bindings to libcprops' trie implementation (a.k.a as a "prefix tree"): http://en.wikipedia.org/wiki/Trie Now, I helped him debug some problems with initial versions of the code which can be found here: http://github.com/shabble/cprops-perl After that the code worked for me, but I noticed that the tests took a long time to run and apparently to load as well. From looking at lib/CProps/Trie.pm I noticed that it was written using MooseX::Declare. I decided to see if converting the code away from MooseX::Declare will make the tests run faster. Today I finally found some tuits to do that, and converted it: http://github.com/shlomif/cprops-perl/tree/convert_away_from_moosex_declare The results are: 1. It took the tests with the original MooseX-Declare code 28 seconds to run on my Pentium 4 2.4 GHz machine (which is admittedly kinda old). 2. On the same machine, after converting the .pm file from MooseX-Declare to Class-XSAccessor, it took the tests 2 seconds or so to run, about 14 times faster (!). Furthermore, I still have some idea for some small optimisations. Granted, I didn't benchmark both tests under renice and it's not a very accurate measurement. I'll get to it soon. Still it indicates that MX::Declare incurs a huge overhead. Seems like all the speed of the XS binding is lost there. Regards, Shlomi Fish -- ----------------------------------------------------------------- Shlomi Fish http://www.shlomifish.org/ http://www.shlomifish.org/humour/ways_to_do_it.html <rindolf> She's a hot chick. But she smokes. <go|dfish> She can smoke as long as she's smokin'. Please reply to list if it's a mailing list post - http://shlom.in/reply .Thread Next