> I've been impressed with the performance work you've been doing across the board Thanks! For all the tests I used MRI Ruby 2.2.2. Unless otherwise noted, I

> I've been impressed with the performance work you've been doing across the board Thanks! For all the tests I used MRI Ruby 2.2.2. Unless otherwise noted, I almost exclusively use the most recently released MRI Ruby version for testing. There shouldn't be a huge difference in most recent Ruby versions. The only thing that comes to mind is that `String#freeze` existed in older versions but was a method call, and not implemented as a parsing optimization (i.e. it would still allocate a string) however I believe that's been in there for a few years. Maybe the generational GC might have an impact. > It'd be helpful to know what your GC tuning looks like, too. I used stock GC settings for all the benchmarks ``` $ env | grep GC # nothing here ``` > A little expansion on the methodology would just make it all the more valuable. The patch does have some more specifics than the post, especially the commits. I used benchmark/ips in some of them to demonstrate specifics problems. I can do a larger write up on specific methodology, if you think that would be interesting. > If you press 'y' Thanks, i've been trying to get in the habit of doing so, that's a good tip.