Dave Barnes created GEODE-10385:
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Summary: User Guide: Remove bad G1 tuning advice
Key: GEODE-10385
URL: https://issues.apache.org/jira/browse/GEODE-10385
Project: Geode
Issue Type: Improvement
Components: docs
Affects Versions: 1.14.4
Reporter: Dave Barnes
The "Managing Heap Memory" page provides some G1 tuning advice that is actually
detrimental to performance. The whole section needs some work, but this
passage, in particular, is wrong:
If you find the Apache Geode Resource Manager does not detect crossing the
eviction or critical threshold quickly enough, it has been observed that its
responsiveness is increased by reducing the default value of
--J-XX:MaxGCPauseMillis=VALUE JVM parameter (which is 200). Be sure to take
into account that this change also increases the amount of time spent in
garbage collection.
Cause: This advice was originally intended only to maximize performance of a
specific test case. It is NOT good advice for production systems.
https://geode.apache.org/docs/guide/114/managing/heap_use/heap_management.html
Short-term solution: delete the passage.
Long-term solution: Come up with some better ideas.
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