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  1. JDK
  2. JDK-4736812

The UDP implementation in JDK1.4 resulting in 50% degradation comapred to JDK1.3

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P5
    • Resolution: Not an Issue
    • Affects Version/s: 1.4.0
    • Fix Version/s: None
    • Component/s: core-libs
    • Labels:
    • Subcomponent:
    • CPU:
      generic
    • OS:
      solaris_8

      Description

      The application is heavily dependent in UDP API. Its a SIP application server. ISV is seeing an ~50% degradation in performance on jdk1.4....an extra 50% time being spent as System time, compared to JDK1.3
      Initial investigation shows that there is a huge Spin count no. on udp_g_lock in jdk1.4, which is not there when the application is run on jdk1.3
      Seems like the UDP implementation has changed from jdk1.3 to jdk1.4, resulting in this effect.

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            • Assignee:
              jccollet Jean-Christophe Collet (Inactive)
              Reporter:
              duke J. Duke (Inactive)
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