Gehel added a comment.

A thread on Friends of JClarity suggests:

  • adding -XX:+ParallelRefProcEnabled (since we seem to have really high Reference processing times
  • turn off PrintTenuringThreshold, since it is rarely useful with G1.
  • check transparent huge pages are disabled
  • activate PrintAdaptiveSizePolicy and PrintReferenceGC to get more information
  • not reducing the size of the heap (this one is counter intuitive to me...)

TASK DETAIL
https://phabricator.wikimedia.org/T175919

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To: Gehel
Cc: Stashbot, gerritbot, Smalyshev, Gehel, Aklapper, Gq86, Lordiis, Lucas_Werkmeister_WMDE, GoranSMilovanovic, Adik2382, Th3d3v1ls, Ramalepe, Liugev6, QZanden, EBjune, merbst, Avner, Lewizho99, Maathavan, debt, Jonas, FloNight, Xmlizer, Izno, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, Manybubbles, Mbch331
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