[ZGC] Add support for heap capacity, nMethod and relocation summary#426
Merged
kcpeppe merged 3 commits intomicrosoft:mainfrom Apr 10, 2025
Merged
[ZGC] Add support for heap capacity, nMethod and relocation summary#426kcpeppe merged 3 commits intomicrosoft:mainfrom
kcpeppe merged 3 commits intomicrosoft:mainfrom
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Adds support for heap capacity summary. Adds fixes to ensure that temporary long[]'s and booleans are reset between phases to ensure no data is carried over between cycles.
Adds support for nMethod tracking in generational ZGC young and old generations.
This commit adds support for all the information for gc,reloc stats. This includes Small, Medium and Large page stats, bytes forward and the age table for all the pages, including Eden and Survivor generations. The Small, Medium and Large table stats are directly accessible on the ZGC cycle, where the page age summaries for Eden and all Survivor generations are included as a variable sized list. As far as I can tell this list can be as long at 14.
Contributor
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Looks great and thank you for taking this on. Is it possible to add a test data to gctoolkit-testdata and add tests to ZGCParserTest, ZGCParserRulesTest? Unfortunately there isn't the equivalent of UnifiedG1GCParserTest for ZGC. This should be added but not as part of this PR. |
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Author
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@kcpeppe, Adding test data is something on my to-do list. I plan to to add testing for Generational ZGC in a follow up PR. |
kcpeppe
approved these changes
Apr 10, 2025
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This was referenced Feb 26, 2026
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This PR includes 3 commits to add support for more of the missing info level logging output for Generational ZGC cycles. It includes the following: