JDK-8237016 : Release Note: Epsilon warns about Xms/Xmx/AlwaysPreTouch configuration
  • Type: Sub-task
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 14
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2020-01-13
  • Updated: 2020-01-13
  • Resolved: 2020-01-13
Description
Many Epsilon GC users expect low latency, but may not be aware that additional configuration is needed for GCs to perform well in those conditions. It now warns about Xms/Xmx/AlwaysPreTouch configuration. These settings are not adjusted automatically, because doing so would affect startup time. These new warnings can be shunned by overriding the default logging level with -Xlog:gc=error.