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  1. JDK
  2. JDK-8134833

Significant slowing of network activity (possibly dns related) affecting jdbc

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P3
    • Resolution: Duplicate
    • Affects Version/s: 8u60
    • Fix Version/s: None
    • Component/s: core-libs
    • Labels:
    • Subcomponent:
    • CPU:
      x86
    • OS:
      os_x

      Description

      FULL PRODUCT VERSION :
      build 1.8.0_60-b27

      ADDITIONAL OS VERSION INFORMATION :
      10.10.5

      A DESCRIPTION OF THE PROBLEM :
      I am running a Java SE Swing application which uses a mySQL JDBC driver for database connectivity. I can run the application from Eclipse and specify which JAVA SE is to be used for execution. I have noted a 30-80% significant slowdown of the application when it performs some network io as it does for jdbc access and determinig the computers own name using a command like :-

      clientname = InetAddress.getLocalHost().getHostName();

      The change in peformance is repeatable and is compared to the immediate prior release version 1.8.0_51

      Reverting to prior java corrects the problem.

      I noticed some references to network dns changes in 1.8.0_60 which might be relevant.

      REGRESSION. Last worked in version 8u51

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Timed updates to jdbc (mysql) database - however :-

      try
      {
      clientname = InetAddress.getLocalHost().getHostName().toLowerCase();
      } catch (Exception e)
      {
      clientname = "unknown";


      Takes longer on new JDK.


      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      Serious performance hit effecting jdbc driver.

      REPRODUCIBILITY :
      This bug can be reproduced always.

      CUSTOMER SUBMITTED WORKAROUND :
      Reverted to prior java

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              Assignee:
              psonal Pallavi Sonal (Inactive)
              Reporter:
              webbuggrp Webbug Group
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                Created:
                Updated:
                Resolved: