Commit d326d9e

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In COPY, insert tuples to the heap in batches.

This greatly reduces the WAL volume, especially when the table is narrow. The overhead of locking the heap page is also reduced. Reduced WAL traffic also makes it scale a lot better, if you run multiple COPY processes at the same time.

1 parent 2c30f96 commit d326d9eCopy full SHA for d326d9e

6 files changed

+629

-62

lines changed

src
- backend
  - access/heap
    - heapam.c
  - commands
    - copy.c
  - postmaster
    - pgstat.c
- include
  - access
    - heapam.h
    - htup.h
  - pgstat.h

6 files changed

+629

-62

lines changed

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