RFR: DRAFT: Expand old on demand [v7]

Kelvin Nilsen kdnilsen at openjdk.org
Wed Apr 12 20:15:20 UTC 2023


> This PR describes several proposed changes to dynamically adjust the sizes of old-gen and young-gen.  In general, the objective is to keep old-gen as small as possible so that there is an abundance of memory available for the young-gen allocation runway.
> 
> As currently drafted, there are regression failures.  This DRAFT PR is published for the purpose of facilitating a careful code review.

Kelvin Nilsen has updated the pull request incrementally with one additional commit since the last revision:

  Remove an invalid assertion
  
  Replace with comments that explain what really happens in this code.

-------------

Changes:
  - all: https://git.openjdk.org/shenandoah/pull/248/files
  - new: https://git.openjdk.org/shenandoah/pull/248/files/be618405..9f0b5459

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=shenandoah&pr=248&range=06
 - incr: https://webrevs.openjdk.org/?repo=shenandoah&pr=248&range=05-06

  Stats: 6 lines in 1 file changed: 1 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/shenandoah/pull/248.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah.git pull/248/head:pull/248

PR: https://git.openjdk.org/shenandoah/pull/248


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