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

From Alvaro Herrera
Subject Re: Default setting for enable_hashagg_disk
Date
Msg-id 20200713164736.GA25726@alvherre.pgsql
Whole thread Raw
In response to Re: Default setting for enable_hashagg_disk  (Jeff Davis <pgsql@j-davis.com>)
Responses Re: Default setting for enable_hashagg_disk
Re: Default setting for enable_hashagg_disk
List pgsql-hackers
On 2020-Jul-13, Jeff Davis wrote:

> 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.

I'm in favor of hash_mem_multiplier.  I think a >1 default is more
sensible than =1 in the long run, but if strategic vote is what we're
doing, then I support the =1 option.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services



pgsql-hackers by date:

Previous
From: Jesse Zhang
Date:
Subject: Fix header identification
Next
From: "Jonathan S. Katz"
Date:
Subject: PostgreSQL 13 Beta 3 Release Date