Performance benchmarks in README

[kvirani]

The README is a pleasure to read, and quite extensive!

That said, I was expecting to see some benchmark comparisons (with vs without bootsnap) against one or more large rails apps... OSS ones like Discourse perhaps?

Can't wait to try out this gem in dev and hopefully eventually (partially) in production. Thanks for the amazing work!

[wjordan]

FWIW, I've been seeing a ~50% improvement in boot times, using a file-based caching solution instead of the xattr implementation (see #25). (The xattr implementation may be faster, but it only supports OSX.)

I've been experimenting with booting code-dot-org, a large Rails app containing lots of translations within YAML files.

Without caching, the app loads in ~30 seconds, with caching it loads in ~15 seconds.

When loading only English locale, the app loads in ~5.7 seconds without caching, and ~2.7 seconds with.

[jules2689]

• Discourse reports a boot time reduction of approximately 50%, from roughly 6 to 3 seconds on one machine;
• One of our smaller internal apps also sees a reduction of 50%, from 3.6 to 1.8 seconds;
• Our core platform -- a rather large monolithic application -- boots about 75% faster, dropping from around 25s to 6.5s.

I'll add this to the readme

[jules2689]

d99fa76

Thanks for the suggestion 😄