Re: Additional Chapter for Tutorial

2020-09-01 Thread Peter Eisentraut
Again, I don't see how this belongs into the tutorial. It is mostly advanced low-level information that is irrelevant for someone starting up, it is not hands-on, so quite unlike the rest of the tutorial, and for the most part the information just duplicates what is already explained elsewhere

Re: max_wal_size

2020-09-01 Thread Bruce Momjian
On Tue, Jun 2, 2020 at 11:42:01PM +0300, Pavel Luzanov wrote: > Hello, > > On 02.06.2020 22:35, Bruce Momjian wrote: > > On Thu, May 28, 2020 at 12:21:14PM +0300, p.luza...@postgrespro.ru wrote: > > > WAL |---|-+-|-+-|-+-> > > > > > > a

Re: Adding description about the random_page_cost and parallel_leader_participation

2020-09-01 Thread Bruce Momjian
On Tue, Sep 1, 2020 at 05:26:50PM +, PG Doc comments form wrote: > The following documentation comment has been logged on the website: > > Page: https://www.postgresql.org/docs/12/runtime-config-query.html > Description: > > I recently have an observation that the combination of random_page_

Adding description about the random_page_cost and parallel_leader_participation

2020-09-01 Thread PG Doc comments form
The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/12/runtime-config-query.html Description: I recently have an observation that the combination of random_page_cost and parallel_leader_participation can cause a performance regression. However