JDK-6949259 : G1: Merge sparse and fine remembered set hash tables
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs18
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2010-05-03
  • Updated: 2021-06-28
  • Resolved: 2021-06-21
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JDK 18
18 b03Fixed
Related Reports
Relates :  
JDK-8017163 - G1: Refactor remembered sets
Description
During a recent meeting we discussed how to reduce the footprint of the per-region remembered sets (RSets) in G1. Even though we could not come up with a reasonable proposal on how to merge the fine-grain and sparse RSets, one obvious improvement is not to have separate top-level hash tables for the fine and sparse entries and, instead, change the code so that they can share one top-level table.

This CR might include additional related improvements.
Comments
Changeset: 1692fd2e Author: Thomas Schatzl <tschatzl@openjdk.org> Date: 2021-06-21 10:06:05 +0000 URL: https://git.openjdk.java.net/jdk/commit/1692fd2eba7164ebd11fce1c02696a9053d131af
21-06-2021