Hi Andres, On Thu, Aug 24, 2023 at 10:09:20PM +0000, Andres Freund wrote: > Use "template" data directory in tests > > When running all (or just many) of our tests, a significant portion of both > CPU time and IO is spent running initdb. Most of those initdb runs don't > specify any options influencing properties of the created data directory. > > Avoid most of that overhead by creating a "template" data directory, alongside > the temporary installation. Instead of running initdb, pg_regress and tap > tests can copy that data directory. When a tap test specifies options to > initdb, the template data directory is not used. That could be relaxed for > some options, but it's not clear it's worth the effort.
This commit is saving a lot of cycles here. Thanks for doing that! -- Michael
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