Re: Autovacuum Problem

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От Kein Name
Тема Re: Autovacuum Problem
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Msg-id CA+XgNjLD8SdsKRzDxVy936N93ijy42jhvgyR0H6zxJgdESq_Pw@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Autovacuum Problem  (Achilleas Mantzios <achill@matrix.gatewaynet.com>)
Ответы Re: Autovacuum Problem  (Achilleas Mantzios <achill@matrix.gatewaynet.com>)
Список pgsql-general
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> VACUUM <> VACUUM FULL
> Normally running VACUUM via autovacuum should help reuse free space but not actually return it to the filesystem / OS (unless it happens to be the last blocks in the data file(s)).
> Ppl in normal/average type of installations/workloads no longer (since 8.2) run VACUUM (or VACUUM FULL) by hand, except in extra ordinary cases where e.g. need for free space is urgent.

Hmmmm then when is the space released to the system when the manual VACUUM FULL run is not done? Any way to "force" this?

2018-04-03 8:49 GMT+02:00 Achilleas Mantzios <achill@matrix.gatewaynet.com>:
On 03/04/2018 09:36, Kein Name wrote:
However no space seems to be freed to the system.

Is there any way a bloody newbie can debug this behaviour?

 VACUUM <> VACUUM FULL
Normally running VACUUM via autovacuum should help reuse free space but not actually return it to the filesystem / OS (unless it happens to be the last blocks in the data file(s)).
Ppl in normal/average type of installations/workloads no longer (since 8.2) run VACUUM (or VACUUM FULL) by hand, except in extra ordinary cases where e.g. need for free space is urgent.


Any help is appreciated!

Thanks
Stefan


--
Achilleas Mantzios
IT DEV Lead
IT DEPT
Dynacom Tankers Mgmt



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