Thank you Eric indeed! It took me a little while to figure out, so i thought I would mention, you can reference git commits for ruby/ruby by running:

```
$ git log --grep "trunk@44058"
```

That first SVN commit is
https://github.com/ruby/ruby/commit/779ae78995977305aa5aec9cb5b562dcf54c22e7

The second commit is:
https://github.com/ruby/ruby/commit/58f800a278b8b70463f4afdbb23a918d8ab441ff

Eric's proposal: https://bugs.ruby-lang.org/issues/9425

I agree that the patch should one day be unnecessary, In the mean time i'm happy to get faster execution while we wait. I was talking with Koichi about how or if we might optimize so we could write "normal" ruby code and still have it run as memory efficient and fast as using constants. He showed me that this string de-duplication feature was in 2.2, though I was having a hard time finding the commits. Thank you Eric for listing them.

In my research it was also pointed out that string de-duplication was added to JVM-8 http://java-performance.info/java-string-deduplication/. I think it's great that Ruby has already started to make string de-duplication optimizations.

Thanks for the perf help and again for the links!