JDK-8049717 : expose L1_data_cache_line_size for diagnostic/sanity checks
  • Type: Bug
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 9
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2014-07-09
  • Updated: 2018-02-08
  • Resolved: 2014-07-15
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JDK 7 JDK 8 JDK 9
7u141Fixed 8u131Fixed 9 b25Fixed
Description
The L1 data cache line size is useful for diagnostic and sanity checks.
In particular it is useful for diagnosing possible false sharing between
hot fields in data structures.