Issue #10817 has been reported by Guo Xiang Tan.

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Bug #10817: [PERF] vm3_gc slower
https://bugs.ruby-lang.org/issues/10817

* Author: Guo Xiang Tan
* Status: Open
* Priority: Normal
* Assignee: Koichi Sasada
* ruby -v: ruby 2.2.0dev (2014-09-07 trunk 47444)
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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http://rubybench.org/ruby/ruby/commits?result_type=vm3_gc

When running locally,
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benchmark results:
Execution time (sec)
name  ruby 2.2.0dev (2014-09-07 trunk 47443) [x86_64-linux]
vm3_gc  1.946

-----------------------------------------------------------
benchmark results:
Execution time (sec)
name  ruby 2.2.0dev (2014-09-07 trunk 47444) [x86_64-linux]
vm3_gc  2.426

Tracked down to https://github.com/ruby/ruby/commit/123eeb1c1a904923754ce65148dbef045b56e083. Let me know if there is anymore information I can provide.





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