Re: PG15 beta1 sort performance regression due to Generation context change

[Jonathan S. Katz]

On 5/20/22 1:56 AM, David Rowley wrote:

Hackers,

Over the past few days I've been gathering some benchmark results
together to show the sort performance improvements in PG15 [1].

So it basically looks like I discovered a very bad case that causes a
significant slowdown.  Yet other cases that are not an exact power of
2 stand to gain significantly from this change.

I'm unsure exactly what I should do about this right now.

While this is being actively investigated, I added this into open items.

Thanks,

Jonathan

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