Issue #10931 has been updated by Guo Xiang Tan.


Nobu from your benchmarks, can we say that it is a regression or is it a trade off made? 

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Bug #10931: [PERF]bm_app_mandelbrot.rb 20% slower.
https://bugs.ruby-lang.org/issues/10931#change-51770

* Author: Guo Xiang Tan
* Status: Open
* Priority: Normal
* Assignee: Nobuyoshi Nakada
* ruby -v: ruby 2.3.0dev
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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http://rubybench.org/ruby/ruby/commits?result_type=app_mandelbrot

Relevant Commits: 
https://github.com/ruby/ruby/commit/909c4c0
https://github.com/ruby/ruby/commit/41b2f1a

Before:               0.786s
After Commit 909c4c0: 0.856s
After Commit 41b2f1a: 0.923s

Just want to raise awareness on this. Feel free to close this issue if the performance trade-offs were intended. Let me know if more information is required. Thank you!




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