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  1. Cloud Enablement
  2. CLOUD-2286

Ability to change the garbage collector in Java S2I image

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    • CLOUD Maintenance Sprint 23

    Description

      Would be good to allow users to change the garbage collector when using the Java S2I image. Adding a different collector via JAVA_OPTS_APPEND does not take effect.

      Currently the garbage collector is set in this script with no option to change it:
      https://github.com/jboss-openshift/cct_module/blob/1.0/os-java-run/added/java-default-options#L121

      gc_config() {
  local minHeapFreeRatio=${GC_MIN_HEAP_FREE_RATIO:-20}
  local maxHeapFreeRatio=${GC_MAX_HEAP_FREE_RATIO:-40}
  local timeRatio=${GC_TIME_RATIO:-4}
  local adaptiveSizePolicyWeight=${GC_ADAPTIVE_SIZE_POLICY_WEIGHT:-90}
  local maxMetaspaceSize=${GC_MAX_METASPACE_SIZE:-100}

  echo "-XX:+UseParallelGC " \
       "-XX:MinHeapFreeRatio=${minHeapFreeRatio} "\
       "-XX:MaxHeapFreeRatio=${maxHeapFreeRatio} "\
       "-XX:GCTimeRatio=${timeRatio} "\
       "-XX:AdaptiveSizePolicyWeight=${adaptiveSizePolicyWeight} "\
       "-XX:MaxMetaspaceSize=${maxMetaspaceSize}m"
}

error_handling() {
  echo "-XX:+ExitOnOutOfMemoryError"
}

initialize_container_limits > /dev/null

## Echo options, trimming trailing and multiple spaces
echo "$(initial_memory) $(max_memory) $(gc_config) $(diagnostics) $(cpu_core_tunning) $(error_handling)" | awk '$1=$1'

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          is cloned by

          Enhancement - An enhancement to or refactoring of existing functionality that is not configurable by an end user (typically a change made by an internal team that affects users) CLOUD-2941 Ability to change the garbage collector in webserver images with GC_CONTAINER_OPTIONS

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Verified
          is duplicated by

          Feature Request - Feature requests from customers and/or users CLOUD-2430 EAP uses Parallel GC by default when running EAP on OpenShift

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          relates to

          Enhancement - An enhancement to or refactoring of existing functionality that is not configurable by an end user (typically a change made by an internal team that affects users) CLOUD-2435 Add JAVA_OPTS_APPEND to Java S2I

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          links to

          Web Link KCS

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            People

              jdowland@redhat.com Jonathan Dowland
              rhn-support-trogers Travis Rogers (Inactive)
              Petr Nehyba Petr Nehyba (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: