[ruby-core:106909] [Ruby master Misc#18451] Undocumented GC.stat keys

Issue #18451 has been updated by peterzhu2118 (Peter Zhu).

Status changed from Closed to Open

I added documentation for these keys in commit [52525b527b4605435110bd61fb9e04d82ca26ff7](https://github.com/ruby/ruby/commit/52525b527b4605435110bd61fb9e04d82ca26ff7).

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Misc #18451: Undocumented GC.stat keys
https://bugs.ruby-lang.org/issues/18451#change-95728

* Author: zverok (Victor Shepelev)
* Status: Open
* Priority: Normal
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As of 3.1 these keys aren't [documented](https://docs.ruby-lang.org/en/master/GC.html#method-c-stat):
* `:compact_count` (2.7)
* `:read_barrier_faults`, `:total_moved_objects` (3.0)
* `:time` (new in 3.1)

(I am just judging by versions/keys available on my system, no keys except `:time` are mentioned in corresponding version's NEWS.)

I am not familiar with GC enough to easily handle this. 
Is there anybody who is?

@tenderlovemaking, it seems you've introduced all except `:time`? Can you provide some insight on what are they representing?



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