On Wed, May 11, 2022 at 02:19:20PM +0200, Matthias van de Meent wrote: > On Tue, 10 May 2022 at 17:44, Bruce Momjian <br...@momjian.us> wrote: > > > > I have completed the first draft of the PG 15 release notes and you can > > see the results here: > > > > https://momjian.us/pgsql_docs/release-15.html > > > > The feature count is similar to recent major releases: > > > > release-10 195 > > release-11 185 > > release-12 198 > > release-13 183 > > release-14 229 > > --> release-15 186 > > > > I assume there will be major adjustments in the next few weeks based on > > feedback. > > With 10a8d138 (an extension on the work of PG14's 3c3b8a4b, which was > listed in the release notes for PG14) we now truncate the LP array in > more cases, which means that overall a workload with mainly HOT > updates might require VACUUM to run less often to keep the relation > size stable. > > I will admit that I am tooting my own horn, but I think it is worth > mentioning for DBAs, as it reduces the bloating behaviour of certain > classes of bloat-generating workloads (and thus they might need to > re-tune any vacuum-related settings).
We barely document HOT updates, and this change seems too marginal to mention. I think we already have enough VACUUM changes that people will need to reevaluate their vacuum settings anyway. -- Bruce Momjian <br...@momjian.us> https://momjian.us EDB https://enterprisedb.com Indecision is a decision. Inaction is an action. Mark Batterson