We're currently holding the ZPageAllocator lock while performing a number of expensive operations, such as committing and uncommitting memory. This can have a very negative impact on latency, for example, when a Java thread is trying to allocate a page from the page cache while the ZUncommitter thread is uncommitting a portion of the heap.
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JDK-8242527 ZGC: TestUncommit.java fails due to "Exception: Uncommitted too fast"
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- Resolved
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