Re: PG 16 draft release notes ready

Andres Freund <andres@anarazel.de>

From: Andres Freund <andres@anarazel.de>
To: "Jonathan S. Katz" <jkatz@postgresql.org>, Bruce Momjian <bruce@momjian.us>
Cc: PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2023-05-21T19:24:31Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →
  1. Revert MAINTAIN privilege and pg_maintain predefined role.

  2. doc: PG 16 relnotes, remove "Have initdb use ICU by default"

  3. initdb: change default --locale-provider back to libc.

  4. doc: PG 16 relnotes, add author

  5. doc: PG 16 relnotes, move memory item and reword OUTER item

  6. doc: PG 16 relnotes, add memory overhead reduction item

  7. doc: PG 16 relnotes, adjust subscription origin mention

  8. doc: PG 16 relnotes, adjust auto_explain logging item

  9. doc: PG 16 relnotes: adjust outer/full hash join parallelization

  10. doc: PG 16 relnotes, fix duplicate author and commit

  11. doc: PG 16 relnotes, fix "locale" typo and windows locale text

  12. doc: PG 16 relnotes, add author from previous merge

  13. doc: PG 16 relnotes, wording adjustments

  14. doc: PG 16 relnotes, merge and move vector items

  15. doc: PG 16 relnotes, update xid/subxid searches item

  16. doc: PG 16 relnotes, SIMD improvements

  17. doc: PG 16 relnotes, add major features list

  18. doc: PG 16 relnotes, misc merged items and bootstrap detail

  19. doc: PG 16 relnotes, misc. updates

  20. doc: PG 16 relnotes, add commits

  21. Allow logical decoding on standbys

  22. Fix ts_headline() edge cases for empty query and empty search text.

  23. Add a hook for modifying the ldapbind password

  24. Rework design of functions in pg_walinspect

  25. initdb: derive encoding from locale for ICU; similar to libc.

  26. Doc: add XML ID attributes to <sectN> and <varlistentry> tags.

  27. Simplify the implementations of the to_reg* functions.

  28. Rename pg_dissect_walfile_name() to pg_split_walfile_name()

  29. Make materialized views participate in predicate locking

  30. Improve performance of and reduce overheads of memory management

  31. Allow grant-level control of role inheritance behavior.

Hi,

On May 21, 2023 11:46:56 AM PDT, "Jonathan S. Katz" <jkatz@postgresql.org> wrote:
>On 5/21/23 1:13 PM, Andres Freund wrote:
>
>> 
>> Looking through the release notes, I didn't see an entry for
>> 
>> commit c6e0fe1f2a08505544c410f613839664eea9eb21
>> Author: David Rowley <drowley@postgresql.org>
>> Date:   2022-08-29 17:15:00 +1200
>>        Improve performance of and reduce overheads of memory management
>> 
>> even though I think that's one of the more impactful improvements. What was
>> the reason for leaving that out?
>
>IIUC in[1], would this "just speed up" read-heavy workloads?

I don't think so. It can speed up write workloads as well. But more importantly it can noticeably reduce memory usage, including for things like the relcache.

Andres
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