JDK-8153771 : Introduce MinPLABSize option
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 9
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2016-04-07
  • Updated: 2019-02-11
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tbdUnresolved
Related Reports
Relates :  
JDK-8172792 - JEP 308: Improve Dynamic Number of Thread Sizing for G1
Description
PLAB flags such as YoungPLABSize and OldPLABSize are affected by MinTLABSize because PLAB::min_size() is using MinTLABSize internally. 
However this seems not proper setting as PLAB and TLAB are not always related. Some users would want to have different settings for them. e.g. small PLAB with large TLAB if there is a situation that most objects are died young but many objects are created.
Comments
This CR seems not that necessary for now. Below is the initial patch out for review. http://cr.openjdk.java.net/~sangheki/8153771/webrev.0/
07-03-2018