JDK-8172156 : (array) Tune thresholds for vectorized mismatch in Arrays.equals()
  • Type: Bug
  • Component: core-libs
  • Sub-Component: java.util
  • Affected Version: 9
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2016-12-30
  • Updated: 2018-09-11
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tbdUnresolved
Related Reports
Relates :  
JDK-8136924 - Vectorized support for array equals/compare/mismatch using Unsafe
Relates :  
JDK-6655180 - (array) Reduce JNI overhead for Arrays.equals() with float/double arrays
Description
During verification of the effect of JDK-8136924 on JDK-6655180, it was observed that better performance might be able to be obtained for small floating point arrays if the threshold(s) above which vectorized mismatch is used were slightly larger. The effect of modifying these thresholds should be measured and if reasonable the thresholds adjusted.