| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Excessive disk usage in WindowAgg |
| Date: | 2019-11-04 19:11:18 |
| Message-ID: | 20191104191118.b2nvs5rrqm4nhuwd@alap3.anarazel.de |
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| Thread: | |
| Lists: | pgsql-hackers |
Hi,
On 2019-11-04 19:04:52 +0000, Andrew Gierth wrote:
> >>>>> "Andres" == Andres Freund <andres(at)anarazel(dot)de> writes:
>
> >>> Obviously we _do_ need to be more picky about this; it seems clear
> >>> that using CP_SMALL_TLIST | CP_LABEL_TLIST would be a win in many
> >>> cases. Opinions?
>
> >> Seems reasonable to me, do you want to do the honors?
>
> Andres> I was briefly wondering if this ought to be backpatched. -0
> Andres> here, but...
>
> Uh, it seems obvious to me that it should be backpatched?
Fine with me. But I don't think it's just plainly obvious, it's
essentailly a change in query plans etc, and we've been getting more
hesitant with those over time.
Greetings,
Andres Freund
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