Horton

Optimize RelationFindReplTupleSeq() for CLOBBER_CACHE_ALWAYS.

Noah Misch <noah@leadboat.com>

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Commit: 328c70997bc3518a50bd9a8ff33de349a7223413
Author: Noah Misch <noah@leadboat.com>
Date: 2020-04-11T17:30:12Z
Releases: 13.0 
Optimize RelationFindReplTupleSeq() for CLOBBER_CACHE_ALWAYS.

Specifically, remember lookup_type_cache() results instead of retrieving
them once per comparison.  Under CLOBBER_CACHE_ALWAYS, this reduced
src/test/subscription/t/001_rep_changes.pl elapsed time by an order of
magnitude, which reduced check-world elapsed time by 9%.

Discussion: https://postgr.es/m/20200406085420.GC162712@rfd.leadboat.com

Files

PathChange+/−
src/backend/executor/execReplication.c modified +18 −8

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