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GC warning thread should take into account non-pausing collector phases #899
Sometimes, when using ParNew and CMS the warning thread erroneously throws a fit because the non-pausing phases of those collectors take much longer than the warning period.
If possible, use only the stop-world-phases of CMS to compare against the warning threshold. Refer to https://blogs.oracle.com/jonthecollector/entry/hey_joe_phases_of_cms