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  1. JDK
  2. JDK-6817189

Observe user'ss ulimit's in setting default heap size.

    Details

    • Type: Enhancement
    • Status: Closed
    • Priority: P3
    • Resolution: Duplicate
    • Affects Version/s: 7
    • Fix Version/s: None
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
      gc
    • CPU:
      generic
    • OS:
      generic

      Description

      When the default heap size is chosen ergonomically, observe the
      user's memory size limits (ulimits).
      Customer scenario:
      A container with capped-memory=16GBis created in a E25k domain that has 64GB of physical memory. The "capped-memory" in a zone is a soft memory limit not a hard partitioning memory limit like in LDoms. There is 'rcapd' daemon running in the background to check if a zone's processes are hitting the "capped-memory" limit. Sun's JVM by default uses 1/64th of physical memory as its initial heap size, therefore in a 64GB domain, a container will use 1GB as its default heap size. Customer desires to have other method to define a default Java heap size.

      Kimberly Chang
      Systems Engineer

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              • Assignee:
                Unassigned
                Reporter:
                jmasa Jon Masamitsu (Inactive)
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