Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-6984368

Large default heap size does not allow to use zero based compressed oops.

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: hs19
    • Fix Version/s: hs19
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Resolved In Build:
      b07
    • CPU:
      sparc
    • OS:
      solaris_10
    • Verification:
      Verified

      Backports

        Description

        For 64 bit VM the default heap size is set to 1/4 of available physical memory. With memory > 120Gb the default heap size would be set to about 30Gb when compressed oops are used. It is fine for regular compressed oops but a little big for zero based compressed oops since lower part of virtual memory is used by os.

          Attachments

            Issue Links

              Activity

                People

                Assignee:
                kvn Vladimir Kozlov
                Reporter:
                kvn Vladimir Kozlov
                Votes:
                0 Vote for this issue
                Watchers:
                0 Start watching this issue

                  Dates

                  Created:
                  Updated:
                  Resolved:
                  Imported:
                  Indexed: