RFR: JDK-8260571: Add PrintMetaspaceStatistics to print metaspace statistics upon VM exit

Mon Feb 1 20:52:40 UTC 2021

On Thu, 28 Jan 2021 10:20:42 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> This patch adds a new diagnostic boolean switch `PrintMetaspaceStatistics`. When set, it will cause the VM to print a brief report about metaspace occupancy when exiting. It follows the same logic as `PrintNMTStatistics` and similar switches.

Looks good to me.

src/hotspot/share/runtime/globals.hpp line 1487:

> 1485:           "options: balanced, aggressive, none")                            \
> 1486:                                                                             \
> 1487:   product(bool, PrintMetaspaceStatistics, false, DIAGNOSTIC,                \

Can you call this PrintMetaspaceStatisticsAtExit to be like the other ones?

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PR: https://git.openjdk.java.net/jdk/pull/2283