JDK-8223078 : Add microbenchmark for array copying/clearing/resizing
  • Type: Enhancement
  • Component: core-libs
  • Sub-Component: java.lang
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2019-04-29
  • Updated: 2019-05-02
  • Resolved: 2019-05-01
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JDK 13
13 b19Fixed
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Relates :  
Description
We never checked in a microbenchmark for
JDK-6428387: array clone() much slower than Arrays.copyOf
but now that we have jmh support, we should.

We can reaffirm that using arraycopy is much faster than the equivalent loop.
Comments
https://cr.openjdk.java.net/~martin/webrevs/jdk/ArrayFiddle-jmh/
29-04-2019