Horton

Re: Add A Glossary

Jürgen Purtz <juergen@purtz.de>

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From: Jürgen Purtz <juergen@purtz.de>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Justin Pryzby <pryzby@telsasoft.com>, Alvaro Herrera <alvherre@2ndquadrant.com>, Corey Huinker <corey.huinker@gmail.com>, Roger Harkavy <rogerharkavy@gmail.com>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>, Fabien COELHO <coelho@cri.ensmp.fr>, Michael Paquier <michael@paquier.xyz>
Date: 2020-03-24T19:40:20Z
Lists: pgsql-hackers, pgsql-docs 
On 24.03.20 19:46, Robert Haas wrote:
>> Do we use shared_buffers for WAL ?
> No.

What's about the explanation in 
https://www.postgresql.org/docs/12/runtime-config-wal.html : 
"wal_buffers (integer)    The amount of shared memory used for WAL data 
that has not yet been written to disk. The default setting of -1 selects 
a size equal to 1/32nd (about 3%) of shared_buffers, ... " ? My 
understanding was, that the parameter wal_buffers grabs some of the 
existing shared_buffers for its own purpose. Is this a 
misinterpretation? Are shared_buffers and wal_buffers two different 
shared memory areas?

Kind regards, Jürgen

Commits

  1. Glossary: Add term "base backup"

  2. Minor glossary tweaks

  3. Adjust some glossary terms

  4. Fix more typos and grammar problems in the glossary

  5. Review of the glossary

  6. Add a glossary to the documentation