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(parent: af0c248) | patch
heapam: Only set tuple's block once per page in pagemode
authorHeikki Linnakangas <heikki.linnakangas@iki.fi>
Tue, 1 Apr 2025 10:24:27 +0000 (13:24 +0300)
committerHeikki Linnakangas <heikki.linnakangas@iki.fi>
Tue, 1 Apr 2025 10:24:27 +0000 (13:24 +0300)
commit2904324a88f672b2ecc22735279c16d6e1ee178c
treec7cb55422baa961d887157f77bd96beccf63c27dtree
parentaf0c248557aecb335462d980cb7319bdf85a5c66commit | diff
heapam: Only set tuple's block once per page in pagemode

Due to splitting the block id into two 16 bit integers, BlockIdSet()
is more expensive than one might think.  Doing it once per returned
tuple shows up as a small but reliably reproducible cost.  It's simple
enough to set the block number just once per block in pagemode, so do
so.

Author: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/lxzj26ga6ippdeunz6kuncectr5gfuugmm2ry22qu6hcx6oid6@lzx3sjsqhmt6
src/backend/access/heap/heapam.c diff | blob | blame | history
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