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  1. Cloud Enablement
  2. CLOUD-1524

[JAVA8] Recognize JAVA_CORE_LIMIT env var setting or replace it with CONTAINER_CORE_LIMIT in the documentation

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    • CLOUD Maintenance Sprint 12

    Description

      Current JAVA_CORE_LIMIT variable description:

      Core limit as described in
https://www.kernel.org/doc/Documentation/scheduler/sched-bwc.txt.
Used to configure the number of GC threads and parallelism for
ForkJoinPool.  Defaults to container core limit.

      The above description suggests the following:

      • JAVA_CORE_LIMIT variable can be set to configure number of GC threads and parallelism for ForJoinPool (when CONTAINER_CORE_LIMIT is unset),
      • JAVA_CORE_LIMIT will use setting from CONTAINER_CORE_LIMIT, when CONTAINER_CORE_LIMIT is set

      But this doesn't correspond to current behaviour:

      • When CONTAINER_CORE_LIMIT is set (and JAVA_CORE_LIMIT is unset) CONTAINER_CORE_LIMITs are used for number of GC threads and parallelism configuration (OK),
      • When CONTAINER_CORE_LIMIT is unset (and JAVA_CORE_LIMIT is set) the variable has no effect (number of GC threads and parallelism for ForkJoinPool isn't configured at all).

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          is duplicated by

          Bug - A problem that impairs or prevents the functions of the product. CLOUD-1530 JAVA_CORE_LIMIT is honored only if quota is set

          • 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
          is related to

          Bug - A problem that impairs or prevents the functions of the product. CLOUD-2052 [EAP7] activemq thread pool system properties doesn't take JAVA_CORE_LIMIT into account

          • 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

          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-2152 [tracker] Sprint 12 release

          • 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

          Bug - A problem that impairs or prevents the functions of the product. CLOUD-1530 JAVA_CORE_LIMIT is honored only if quota is set

          • 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

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              rhn-support-fspolti Filippe Spolti
              rhn-jlieskov Ján Lieskovský
              Tomas Remes Tomas Remes
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                Created:
                Updated:
                Resolved: