mirror of
https://github.com/neondatabase/neon.git
synced 2026-05-14 19:50:38 +00:00
## Problem ValueRef is an unnecessarily large structure, because it carries a cursor. L0 compaction currently instantiates gigabytes of these under some circumstances. ## Summary of changes - Carry a ref to the parent layer instead of a cursor, and construct a cursor on demand. This reduces RSS high watermark during L0 compaction by about 20%.