Bruce Momjian <> writes:
> Why is autovacuum_freeze_max_age's default set to 200 million, rather
> than something like 2 billion?  It seems 2 billion is half way to
> wrap-around and would be a better default.  Right now, the default seems
> to freeze 10x more often than it has to.

Please see the archives.  I do not remember the reasoning, but there
was some, and you need to justify why it was wrong not just assert
that you think it's silly.

                        regards, tom lane

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