Issue #12180 has been updated by Hiroshi SHIBATA.


I asked this feature to ko1. He said that it's better to merge at Ruby 2.5.

We will evaluate this after Ruby 2.4.0 release.

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Feature #12180: switch id_table.c variant
https://bugs.ruby-lang.org/issues/12180#change-62174

* Author: Yura Sokolov
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
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Currently used variant is 'binary search in small table + hash for large tables'.
But for contemporary CPU it may be better to do linear scan for small tables.

It is already implemented in `id_table.c` and numbered as 35.

Tested with simple Redmine installation on Intel Haswell i7-4770 CPU @ 3.40GHz

- trunk:
`Requests per second:    27.79 [#/sec] (mean)`
- with switched implementation:
`Requests per second:    28.87 [#/sec] (mean)`

---Files--------------------------------
0001-id_table.c-switch-id_table-variant.patch (767 Bytes)


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