Re: [COMMITTERS] pgsql: Lower *_freeze_max_age minimum values.
От | Andres Freund |
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Тема | Re: [COMMITTERS] pgsql: Lower *_freeze_max_age minimum values. |
Дата | |
Msg-id | 20151005134539.GC26492@awork2.anarazel.de обсуждение исходный текст |
Ответ на | Re: [COMMITTERS] pgsql: Lower *_freeze_max_age minimum values. (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: [COMMITTERS] pgsql: Lower *_freeze_max_age minimum values.
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Список | pgsql-hackers |
On 2015-10-05 09:39:58 -0400, Tom Lane wrote: > Andres Freund <andres@anarazel.de> writes: > > How about simply removing that sentence? I.e. something like > > <literal>autovacuum_freeze_max_age</> larger than the system-wide setting > > - (it can only be set smaller). Note that while you can set > > - <literal>autovacuum_freeze_max_age</> very small, or even zero, this is > > - usually unwise since it will force frequent vacuuming. > > + (it can only be set smaller). > > </para> > > How about "Setting autovacuum_freeze_max_age to very small values > is unwise since it will force frequent vacuuming." Well, you still can't really set it to a very small value - the lower limits are still 100k/10k for xids/mxids. To me that sentence mostly made sense with the old logic where no lower limits existed. Andres
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