On Nov 21, 1:31    
wrote:
> Charles Oliver Nutter wrote:
> > brab... / gmail.com wrote:
> >> $ jruby -J-Xmn128m -J-Xms1024m -J-Xmx1024m -J-server SieveOfZakiya.rb
>
> >> Error, could not compile; pass -d or
> >> -J-Djruby.jit.logging.verbose=true for more details
>
> > Odd...the main script, or a method in it, must be gi-frigging-gantic to
> > blow out the bytecode cap. Glad to see in your results below that with a
> > bit of tweaking we're on par with 1.9. I'll look into the compilation
> > issue; I know there are a few cases that can still pop the compiler,
> > like really big arrays that require a lot of init.
>
> Yeah, there's several methods there that could easily blow the cap and
> have to remain interpreted. The inability to compile the whole file as a
> result is probably a large part of the lower perf. The algorithm is also
> *extremely* memory-intensive; logging GC on JRuby it had to do multiple
> full collections before the first iteration even came back.
>
> - Charlie

I just uploaded a more memory efficient and faster upgrade.

Please check it out.

Jabari