Thread

Re: First draft of PG 19 release notes

Bruce Momjian <bruce@momjian.us> — 2026-05-07T22:01:16Z

On Mon, Apr 20, 2026 at 09:03:41PM +0800, Xuneng Zhou wrote:
> Thanks for working on the draft. Here're some comments for it:
> 
> 1) Improve performance of pgstattuple by using streaming reads
> 
> There are two related commits that improve the performance of
> pgstattuple. The current hyperlink references [1]; would it make sense
> to include [2] too?

Sure, added.

> [1] https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=213f0079b
> [2] https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=ae58189a4d523f0156ebe30f4534180555669e88
> 
> 
> 2) Additionally, would this[3] be something worth mentioning in the
> General Performance section? The improvement looks fairly big.
> 
> [3] https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=6c228755add8f0714677440d53a160f9ed332902

Sure, I added it to an existing item.

> 3) Allow standbys to wait for LSN values to be replayed via WAIT FOR
> As for this feature, the follow-up commit[4] extends the WAIT FOR
> command to support waiting for flush and write operations. Is it
> helpful for users to be aware of these use cases as well?
> 
> [4] https://git.postgresql.org/gitweb/?p=postgresql.git;a=commit;h=49a181b5d634340fcfb7c762c387c03f6405367e

Oh, that's a good point.  I missed that additional functionality.

All fixed in the attached, applied patch.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EDB                                      https://enterprisedb.com

  Do not let urgent matters crowd out time for investment in the future.