JDK-8189845 : Fix for 8157000 causes significant performance regression
  • Type: Bug
  • Component: tools
  • Sub-Component: javadoc(tool)
  • Affected Version: 10
  • Priority: P2
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2017-10-24
  • Updated: 2017-11-03
  • Resolved: 2017-10-26
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JDK 10
10 b29Fixed
Related Reports
Relates :  
JDK-8157000 - Do not generate javadoc for overridden method with no spec change
Description
The fix for JDK-8157000 causes a significant performance regression.
Comments
Some stats (Windows x64) for javadoc runs building the jdk docs bundles Note: these are *not* averaged runs, expect noise. before 8157000: 3m52s after 8157000: 6m12s with this fix : 4m28s Thus with this fix, the performance is back in line, the bottleneck is javadoc's VisibleMemberMap implementation that is slated to be revamped in a future release. Optimized a hot method as described by the webrev: Webrev published: http://mail.openjdk.java.net/pipermail/javadoc-dev/2017-October/000338.html
25-10-2017