Forum: Ruby-core Objects in large arrays are leaked

0fed2ab16bdf9fc5a8ff6ceb65ba1e72?d=identicon&s=25 unknown (Guest)
on 2014-04-18 11:58
(Received via mailing list)
Issue #9518 has been updated by Masaya Tarui.


Sorry for such a late response.

I agree.

At the first time, I was introduled for reducing minor GC's long time
by rescan of huge size array.
But in real case, if there are huge size array, there may be other huge
data too.
No matter how it do, it have to take time.

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Bug #9518: Objects in large arrays are leaked
https://bugs.ruby-lang.org/issues/9518#change-46250

* Author: Charlie Somerville
* Status: Open
* Priority: Normal
* Assignee:
* Category:
* Target version:
* ruby -v: ruby 2.1.0p0 (2013-12-25 revision 44422) [x86_64-darwin13.0]
* Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN
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a = [nil] * 131071
loop { a << Object.new; a.pop }
# process RSS stays stable

a = [nil] * 131072
loop { a << Object.new; a.pop }
# process RSS grows quickly and never falls

It seems to be related to this bit of code:
https://github.com/github/ruby/blob/2.1/gc.c#L4764-4766
18813f71506ebad74179bf8c5a136696?d=identicon&s=25 Eric Wong (Guest)
on 2014-04-19 23:28
(Received via mailing list)
Thanks all! r45638
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