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

On Sat, 2020-07-18 at 21:15 -0400, Tom Lane wrote:
> Jeff Davis <pgsql@j-davis.com> writes:
> > What is your opinion about pessimizing the HashAgg disk costs (not
> > affecting HashAgg plans expected to stay in memory)? Tomas Vondra
> > presented some evidence that Sort had some better IO patterns in
> > some
> > cases that weren't easily reflected in a principled way in the cost
> > model.
> 
> Hm, was that in some other thread?  I didn't find any such info
> in a quick look through this one.


https://www.postgresql.org/message-id/2df2e0728d48f498b9d6954b5f9080a34535c385.camel%40j-davis.com

Regards,
    Jeff Davis