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Re: optimizing vacuum truncation scans - Mailing list pgsql-hackers

From Tom Lane
Subject Re: optimizing vacuum truncation scans
Date
Msg-id 7892.1432758832@sss.pgh.pa.us
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In response to Re: optimizing vacuum truncation scans  (Jeff Janes <jeff.janes@gmail.com>)
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Jeff Janes <jeff.janes@gmail.com> writes:
> As it is currently, it is not clear what purpose nonempty_pages serves.

It's to allow an early exit at vacuumlazy.c:271 in case there is no chance
of deleting a useful number of pages.
        regards, tom lane

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