Hi,
I just discovered this setting. Setting this to true prevents the meta
classes of objects that don't implement GroovyObject being weak
references.
The problem with not setting this to true is that when we get into
memory pressure, the meta classes will start to be collected as they are
stored as weak references. This will include java.lang.String etc. So we
end up thrashing because the meta classes are collected due to memory
pressure which frees up a little, then we run a little more code which
causes the recreation of the metaclasses, rinse repeat.
Grails has this same problem and they set this flag to true. The net
result is that the process will OOM instead of thrashing indefinitely.
--
Luke Daley
Principal Engineer
http://gradleware.com
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