Ruby runtimes are pinned to memory due to ChannelStream
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Key: JRUBY-2933
URL: http://jira.codehaus.org/browse/JRUBY-2933
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.1.3
Reporter: Greg Fodor
Priority: Critical
org.jruby.util.io.ChannelStream contains a reference to it's Ruby Runtime
object. However, since it is Finalizable, there is no guarantee if or when the
JVM will finalize the object and free it from memory. In practice, when using
Nailgun, these ChannelStream objects hang out on the finalizer queue and hold
all their Ruby Runtimes in memory, so we can only run a few times with Nailgun
before we start getting out of memory errors.
I'm not 100% positive how to fix this since the runtime is actually used during
the finalize() method of the ChannelStream. Ideally when the stream is closed
the Ruby runtime reference should be cleared, freeing the memory in the case
where the original runtime is disposed of.
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