Done - http://ironruby.codeplex.com/workitem/4966
Shay. On Fri, Jul 30, 2010 at 11:17 PM, Tomas Matousek < tomas.matou...@microsoft.com> wrote: > Great work. Could you file a bug so that we track this perf issue? > > > > Tomas > > > > *From:* ironruby-core-boun...@rubyforge.org [mailto: > ironruby-core-boun...@rubyforge.org] *On Behalf Of *Shay Friedman > *Sent:* Friday, July 30, 2010 12:37 PM > *To:* ironruby-core@rubyforge.org > *Subject:* Re: [Ironruby-core] Performance issues with json_pure under > IronRuby > > > > I've narrowed the problem down. It's somewhere in the StringScanner.Match > method (probably inside RubyRegex.Match). > > > > The next IR code (I've put in on pastebin) results with the same > performance problem where MRI is about 100 (!) times faster than IronRuby: > http://pastebin.com/cc9FvUfz. > > > > Shay. > > > > On Fri, Jul 30, 2010 at 2:03 PM, Daniele Alessandri <suppaki...@gmail.com> > wrote: > > Hi, > yesterday I was testing the json library under IronRuby and, > comparisons with other implementations aside, I noticed that the > "pure" variant performs so bad under IronRuby that it just doesn't > feel normal at all. This is the result for my test with a ~500KB JSON > file parsed under IronRuby 1.1.0 (.NET 4): > > C:\IronRuby\v1.1.0>ir json_speed.rb pure > Rehearsal ------------------------------------ > 474.906250 39.421875 514.328125 (394.262696) > ------------------------- total: 514.328125sec > > user system total real > 482.531250 43.140625 525.671875 (384.509766) > > Here is the full gist with also the results for the same test run > using other implementations (JRuby 1.5 and the latest MRI 1.8.6): > http://gist.github.com/498997 > > I haven't figured yet where the bottleneck is, and the fact that it's > slower on the second run makes things even weirder since the cold > execution overhead shouldn't be there anymore. Any idea about why is > it so slow? > > -- > Daniele Alessandri > http://clorophilla.net/ > http://twitter.com/JoL1hAHN > _______________________________________________ > Ironruby-core mailing list > Ironruby-core@rubyforge.org > http://rubyforge.org/mailman/listinfo/ironruby-core > > > > _______________________________________________ > Ironruby-core mailing list > Ironruby-core@rubyforge.org > http://rubyforge.org/mailman/listinfo/ironruby-core > >
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