Issue #10650 has been reported by Guo Xiang Tan.

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Bug #10650: [PERF] bm_hash_keys and  bm_hash_values
https://bugs.ruby-lang.org/issues/10650

* Author: Guo Xiang Tan
* Status: Open
* Priority: Normal
* Assignee: Nobuyoshi Nakada
* Category: misc
* Target version: 
* ruby -v: Trunk
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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Hi!

Benchmarks bm_hash_keys and bm_hash_values seemed to have gotten slower after a commit between [e23d1736797f9b7170c80a7470b8e5cecd308105](https://github.com/ruby/ruby/commit/e23d1736797f9b7170c80a7470b8e5cecd308105) and [c73c34e27f028b6bcada9e5cd9a2961a822fc813](https://github.com/ruby/ruby/commit/c73c34e27f028b6bcada9e5cd9a2961a822fc813).

You may view the benchmark result graphs at [https://railsbench.herokuapp.com/tgxworld/ruby?utf8=%E2%9C%93&result_types%5B%5D=hash_keys&result_types%5B%5D=hash_values&commit=Submit](https://railsbench.herokuapp.com/tgxworld/ruby?utf8=%E2%9C%93&result_types%5B%5D=hash_keys&result_types%5B%5D=hash_values&commit=Submit).

On my builder, it is roughly 10%-11% slower. Not sure if the results are significant but I wish to bring it up. Thanks in advance!



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