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JDK-6348045 : REGRESSION: serious performance degradation as GZIPInputStream is slower
  • Type: Bug
  • Component: core-libs
  • Sub-Component: java.util.jar
  • Affected Version: 1.4.2_10,5.0u6
  • Priority: P2
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic,windows_xp
  • CPU: generic,x86
  • Submitted: 2005-11-09
  • Updated: 2014-02-26
  • Resolved: 2005-11-10
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Other
1.4.2_11Fixed
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Description
A CAP member reports a performance problem with Java 5.0u6:

just run a small test program(PerformanceTest.java) and here 
are the results after we
 have executed it on a P4 3,2 GHZ HAT machine:

jdk1.4.2:
Time needed for copy the archive :65250 ms

jdk1.5.0_01:
Time needed for copy the archive :63594 ms

jre1.5.0_05: 
Time needed for copy the archive :31453 ms

jre1.5.0_06 build 03 / build 04: 
Time needed for copy the archive :179359 ms

Comments
EVALUATION Fix for 6206933 has been removed.
2005-11-10

EVALUATION We have (in emergency mode) backed out the fix for 2129005: GZipOutputStream/InputStream goes critical(calls JNI_Get*Critical) and causes slowness which will need rethinking and refixing in 1.4.2, 5.0u7, and mustang
2005-11-10