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  1. JDK
  2. JDK-6233917

Change default heap sizes based on performance data

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    • Subcomponent:
      gc
    • Resolved In Build:
      b59a
    • CPU:
      x86
    • OS:
      linux_redhat_9.0

      Description

      As part of the mustang performance work we ran a bunch of apps with varying heap numbers to gauge the impact on startup. After much analysis and debate we arrived at a size of 1mb for the young generation and 4mb for the tenure generation.
      For reference here's the heap size (on linux) of the set of apps we used after startup:

        abeille 576 2520
        columba 960 11948
        jdiskreport 576 6152
        jedit 576 2268
        limewire 576 4144
        notepad 576 1408
        photomesa 576 3372
        reportmill 576 6248
                     ----- ------
        Average 624 4757

      This resulted in an average startup gain of 5%.
      ###@###.### 2005-2-28 19:37:32 GMT

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              Assignee:
              pbk Peter Kessler
              Reporter:
              svioletsunw Scott Violet (Inactive)
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