If the ZUnmapper thread is starved the number of mapping put on its queue can increase unbounded. This can in turn lead to running out of virtual address space and having too many in flight mappings.
- relates to
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JDK-8306841 Generational ZGC: NMT reports Java heap size larger than max heap size
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- Resolved
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JDK-8310015 ZGC: Unbounded asynchronous unmapping can lead to running out of address space
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- Closed
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JDK-8246220 ZGC: Introduce ZUnmapper to asynchronous unmap pages
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- Resolved
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