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Enhancement
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Resolution: Fixed
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P4
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17
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b19
After JDK-8262068 gc+phases=debug output during full gc looks as follows:
[0.695s][debug][gc,phases] GC(51) Phase 1: Weak Processing 0.309ms
[0.695s][debug][gc,phases] GC(51) ClassLoaderData 0.003ms
[0.695s][debug][gc,phases] GC(51) Trigger cleanups 0.002ms
[0.699s][debug][gc,phases] GC(51) Phase 1: Class Unloading and Cleanup 4.056ms
[0.699s][info ][gc,phases] GC(51) Phase 1: Mark live objects 7.722ms
[0.699s][debug][gc,phases] GC(51) Phase 2: skip compaction region index: 0, live words: 125610
[repeated for every region skipped]
Since heaps can have thousands of regions, this is too much information at this log level.
Move these per-region messages to gc+phases=trace or somewhere more appropriate.
[0.695s][debug][gc,phases] GC(51) Phase 1: Weak Processing 0.309ms
[0.695s][debug][gc,phases] GC(51) ClassLoaderData 0.003ms
[0.695s][debug][gc,phases] GC(51) Trigger cleanups 0.002ms
[0.699s][debug][gc,phases] GC(51) Phase 1: Class Unloading and Cleanup 4.056ms
[0.699s][info ][gc,phases] GC(51) Phase 1: Mark live objects 7.722ms
[0.699s][debug][gc,phases] GC(51) Phase 2: skip compaction region index: 0, live words: 125610
[repeated for every region skipped]
Since heaps can have thousands of regions, this is too much information at this log level.
Move these per-region messages to gc+phases=trace or somewhere more appropriate.
- relates to
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JDK-8262068 Improve G1 Full GC by skipping compaction for regions with high survival ratio
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- Resolved
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