[ruby-core:74362] [Ruby trunk Feature#12180] switch id_table.c variant

Issue #12180 has been updated by Yura Sokolov.


I just install Redmine - the same software that powers bugs.ruby-lang.org ,
then add several test issues, and bench it with 'apache benchmark':
`ab -n 1000 -c 10 http://localhost:3000/projects/general/issues`
(`general` is a name of test project)


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Feature #12180: switch id_table.c variant
https://bugs.ruby-lang.org/issues/12180#change-57481

* Author: Yura Sokolov
* Status: Open
* Priority: Normal
* Assignee: 
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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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