Issue #10999 has been updated by Tomoyuki Chikanaga.

Backport changed from 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: REQUIRED to 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONE

Backported into `ruby_2_2` branch at r50547.

I support ko1's comment. But I think the difference in benchmark scripts between branches are more misleading. So I backport the change.
I'm willing to backport the resurrection of the original benchmark. Please notice me by new ticket or change `Backport` field.

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Bug #10999: [PERF] bm_hash_aref_flo.rb
https://bugs.ruby-lang.org/issues/10999#change-52496

* Author: Guo Xiang Tan
* Status: Closed
* Priority: Normal
* Assignee: Nobuyoshi Nakada
* ruby -v: 2.3.0dev (2015-03-18 trunk 49999) [x86_64-linux]
* Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: DONE
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Before: 0.066s
After [3bcf9fb53e4b9efabb15a3091fddfb68e5b6fbbe](https://github.com/ruby/ruby/commit/3bcf9fb): 0.094

To view the full graph, please visit http://rubybench.org/ruby/ruby/commits?result_type=hash_aref_flo&display_count=200.

To issue is meant to highlight what we're seeing at RubyBench.org, feel free to close this issue if the trade offs were intended. 



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