JDK-6485083 : G1: parallelize Full GCs in G1
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 7
  • Priority: P3
  • Status: Closed
  • Resolution: Duplicate
  • OS: generic
  • CPU: generic
  • Submitted: 2006-10-23
  • Updated: 2023-12-13
  • Resolved: 2017-11-18
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tbdResolved
Related Reports
Duplicate :  
JDK-8172890 - JEP 307: Parallel Full GC for G1
Description
In G1, when the concurrent marking phase cannot keep up with the application, a Full GC will collect the entire heap. This Full GC currently takes place serially and, depending on heap size, can be very slow. It would be nice to parallelize the Full GC operation to make Full GCs less painful for customers.
Comments
Implemented in JEP 307 (JDK-8172890).
18-11-2017
Shenandoah code implements a parallel Full GC. Maybe that one could be merged with the current G1 full gc code due to the familiarity of the heap layout.
15-06-2016