From: Sam Duncan <sduncan@...>
Date: 2012-05-21T05:13:06+09:00
Subject: Re: break down of differences between interpreters?

On 20/05/12 01:00, Charles Oliver Nutter wrote:
> I'll give you the reasons people tell us they choose (and do not choose) JRuby.
>
> Pro:
>
> ** Solid parallelism and concurrency libraries that have been tested
> for many years
> ** Excellent performance through JIT and the new invokedynamic features
> * Large datasets (JVM handles much better than e.g. MRI)
> * Straight-line performance (JRuby should generally be the fastest
> when running on JRuby 1.7 + Java 7 JVM)
These are the reasons we have JRuby running some of our system routines 
which would otherwise be runnable in any other Ruby implementation.
>
> Con:
>
> * Process size (we are larger, but you can often do more than MRI
> without needing multiple processes).
> * Many POSIX features from Ruby aren't or can't be implemented (fork,
> low-level sockets, process control).

These represent frustrations we observe with running under JRuby. I'm 
not a big fan of Java, but the phrase "horses for courses" comes to mind.

Sam