[maxime_cb]

For anyone curious, we've been working to reduce the memory overhead and have added some stats to keep track of memory usage over time. On this graph, you can see a comparison with the CRuby interpreter:

https://speed.yjit.org/memory_timeline#railsbench

[greenpeas]

What happened on jun 14? (the dramatic drop in memory usage)

Edit: I guess this (https://github.com/ruby/ruby/pull/5944) PR was merged.

[maxime_cb]

Yes. Prior to that point we used to allocate a large chunk of executable memory upfront. We switched to mapping that memory on demand, and that alone was a huge improvement.