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Add context for custom GC tunings #11651

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Dec 19, 2023
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Add context for custom GC tunings #11651

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10 changes: 5 additions & 5 deletions distribution/src/config/jvm.options
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Original file line number Diff line number Diff line change
Expand Up @@ -38,12 +38,12 @@
8-10:-XX:+UseCMSInitiatingOccupancyOnly

## G1GC Configuration
# NOTE: G1 GC is only supported on JDK version 10 or later
# to use G1GC, uncomment the next two lines and update the version on the
# following three lines to your version of the JDK
# 10:-XX:-UseConcMarkSweepGC
# 10:-XX:-UseCMSInitiatingOccupancyOnly
# NOTE: G1GC is the default GC for all JDKs 11 and newer
11-:-XX:+UseG1GC
# See https://github.com/elastic/elasticsearch/pull/46169 for the history
# behind these settings, but the tl;dr is that default values can lead
# to situations where heap usage grows enough to trigger a circuit breaker
# before GC kicks in.
11-:-XX:G1ReservePercent=25
11-:-XX:InitiatingHeapOccupancyPercent=30

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