Re: [jruby-user] Anything wrong with shelling out to jruby?

Some simple tests at the heroku console show that this feature doesn't help
performance at all:

> JRuby.runtime.instance_config.run_ruby_in_process = false
=> false
> Benchmark.measure{`ruby -e"puts 'foo'"`}
=>   0.020000   0.010000  14.980000 ( 17.739000)

> JRuby.runtime.instance_config.run_ruby_in_process = true
=> true
> Benchmark.measure{`ruby -e"puts 'foo'"`}
=>   0.010000   0.000000  14.740000 ( 17.536000)


I wonder if the in-process feature isn't being used for some reason? Any
way to inspect this in either the inner or outer process?