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doc: rewrite random_page_cost description
authorBruce Momjian <bruce@momjian.us>
Thu, 30 Oct 2025 23:11:53 +0000 (19:11 -0400)
committerBruce Momjian <bruce@momjian.us>
Thu, 30 Oct 2025 23:11:53 +0000 (19:11 -0400)
commitd4e4cecace91bd91f77da1cf081df2dba1b76a41
treea177f9b444ad5b1bd58c39d958af8aa79f37a8f2tree | snapshot
parentfca4f5f62da0a17097d1326be9dc9d1545065271commit | diff
doc:  rewrite random_page_cost description

This removes some of the specifics of how the default was set, and adds
a mention of latency as a reason the value is lower than the storage
hardware might suggest.  It still mentions caching.

Discussion: https://postgr.es/m/CAKAnmmK_nSPYr53LobUwQD59a-8U9GEC3XGJ43oaTYJq5nAOkw@mail.gmail.com

Backpatch-through: 13
doc/src/sgml/config.sgml diff | blob | blame | history
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