Optimizing Ruby lazy initialization in TruffleRuby with deoptimization

Nice to see some TruffleRuby love.<p>Ruby could have been Swift, if MacRuby had not been killed (well at least it lives on as RubyMotion).

&gt; Benchmarking isn’t a perfect measure of how effective this change is (benchmarking is arguably never perfect, but that’s a different conversation), as the results would be too noisy to observe in a large project.<p>So... does that not mean that any micro-improvement would also be too small to be significant on any large project?

Hopefully with Shopify&#x27;s help we are closer to running Rails on Truffle.

I wonder if ruby could eventually officially migrate to Graalvm

I remain skeptical of JRuby. As of about 2-3 years ago, there were many benchmarks touting it&#x27;s performance, but in our large publicly deployed web app, it always underperformed and switching to MRI on Phusion more than doubled our performance on half the servers. We also spent like a developer-year on issues that accompanied being off the beaten path with JRuby, like various nokogiri complications.<p>I even contacted the devs at one point with a benchmark that ran jruby directly on strings for several minutes. The answer I got was always that it would eventually perform better than MRI with more warmup. Spoiler: it didn&#x27;t. Well, maybe I was supposed to run it for another month and it would have.

(btw I am the author of this post, thread questions if wanted. Trying to avoid draining myself addressing all the comments. Take care in these strange times &lt;3)

&gt;&#x27;TruffleRuby has high potential in speed, as it is nine times faster than CRuby on optcarrot, a NES emulator benchmark developed by the Ruby Core Team.&#x27;<p>Really? But now the latest results are in apparently and judging by these benchmarks[0], I don&#x27;t know what to make of this claim given how slow TruffleRuby is when compared to other similar languages or even Ruby. But its clear that its LLVM-based cousin Crystal still blows it out of the ocean in every benchmark if you&#x27;re really talking about &#x27;high performance&#x27;...<p>[0] <a href="https:&#x2F;&#x2F;github.com&#x2F;kostya&#x2F;benchmarks" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;kostya&#x2F;benchmarks</a>