Re: Performance degradation of REFRESH MATERIALIZED VIEW - Mailing list pgsql-hackers

From Andres Freund
Subject Re: Performance degradation of REFRESH MATERIALIZED VIEW
Date
Msg-id 20210524182119.rc7htnkphvycbvg4@alap3.anarazel.de
Whole thread Raw
In response to Re: Performance degradation of REFRESH MATERIALIZED VIEW  (Tomas Vondra <tomas.vondra@enterprisedb.com>)
Responses Re: Performance degradation of REFRESH MATERIALIZED VIEW
List pgsql-hackers
Hi,

On 2021-05-24 12:37:18 +0200, Tomas Vondra wrote:
> Another option might be changes in the binary layout - 5% change is well
> within the range that could be attributed to this, but it feels very
> hand-wavy and more like an excuse than real analysis.

I don't think 5% is likely to be explained by binary layout unless you
look for an explicitly adverse layout.


> Hmmm, thanks for reminding us that patch. Why did we reject that approach in
> favor of the current one?

Don't know about others, but I think it's way too fragile.

Greetings,

Andres Freund



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