Nathan Bossart 3c472a1829
doc: Adjust note about pg_upgrade's --jobs option. ...
Presently, this section lists a couple of parallelized parts of
pg_upgrade and suggests a starting point for setting the --jobs
option. The list of parallelized tasks is not particularly
actionable, and the phrasing for the --jobs recommendation is
confusing to some readers.
This commit attempts to improve this section by eliminating the
list of parallelized tasks and instead highlighting that --jobs is
most useful for clusters with multiple databases or tablespaces.
Additionally, the recommendation for setting --jobs is simplified
to suggest starting with the number of CPU cores.
Reported-by: Magnus Hagander <magnus@hagander.net >
Reviewed-by: Daniel Gustafsson <daniel@yesql.se >
Reviewed-by: Magnus Hagander <magnus@hagander.net >
Discussion: https://postgr.es/m/Z8dBn_5iGLNuYiPo%40nathan
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