RFR: JDK-8133206 - Higher native memory usage caused by upgrade to zlib 1.2.8

Alex Kashchenko mail at alexkasko.com
Tue Nov 10 10:44:55 UTC 2015

Please review the following fix to JDK-8133206:

  - bug: https://bugs.openjdk.java.net/browse/JDK-8133206
  - webrev for jdk9: 

This fix is a forward-port of the patch to jdk7u created by Nikolay 

  - webrev for jdk7u: 
  - jdk7u review thread with the issue details: 
  - the same thread on core-libs-dev: 

Forward-port to jdk9 is almost the same as original patch (with changed 
paths), one additional inflate(...) call is changed in zip_util.c .

jdk9 with this patch passes all the regression tests from java/util/jar, 
java/util/zip, tools/jar and tools/pack200.

I created a jtreg reproducer that works with jdk7u and jdk9:

  - web link: http://cr.openjdk.java.net/~akasko/jdk9/8133206/reproducer/
  - download: http://cr.openjdk.java.net/~akasko/jdk9/8133206/reproducer.zip

This reproducer is Linux-only, slow (takes more than a minute) and 
requires Valgrind and zlib-debuginfo (if system zlib is used). It runs 
java.util.zip.Inflater under the Memcheck multiple times and parses the 
output to compare the number of zlib-specific memory allocations. I am 
not sure whether such reproducer should be included into the jdk 
regression tests tree, so publishing it as a standalone jtreg test (not 
a webrev).

Please let me know if I need to create a new bug for jdk9 (in addition 
to JDK-8133206).


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