Re: Default setting for enable_hashagg_disk - Mailing list pgsql-hackers

From Jeff Davis
Subject Re: Default setting for enable_hashagg_disk
Date
Msg-id 5cf74833a830e76cc7cc7506aa77bd6ab0c94f4c.camel@j-davis.com
Whole thread Raw
In response to Re: Default setting for enable_hashagg_disk  (David Rowley <dgrowleyml@gmail.com>)
Responses Re: Default setting for enable_hashagg_disk  (Alvaro Herrera <alvherre@2ndquadrant.com>)
List pgsql-hackers
On Tue, 2020-07-14 at 02:25 +1200, David Rowley wrote:
> Updated summary:
> * For hash_mem = Tomas [7], Justin [16]
> * For hash_mem_multiplier with a default > 1.0 = DavidG [21]
> * For hash_mem_multiplier with default = 1.0 =  PeterG [15][0], Tom
> [20][24]

I am OK with these options, but I still prefer a simple escape hatch.

> * Maybe do nothing until we see how things go during beta = Bruce
> [3], Amit [10]
> * Just let users set work_mem = Stephen [21], Alvaro [4] (Alvaro
> changed his mind after Andres pointed out that changes other nodes in
> the plan too [25])

I am not on board with these options.

Regards,
    Jeff Davis





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