pgsql: VACUUM VERBOSE: tweak scanned_pages logic.

From: Peter Geoghegan <pg(at)bowt(dot)ie>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: VACUUM VERBOSE: tweak scanned_pages logic.
Date: 2022-03-13 20:08:18
Message-ID: E1nTUVm-000bgy-1x@gemulon.postgresql.org
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VACUUM VERBOSE: tweak scanned_pages logic.

Commit 872770fd6c taught VACUUM VERBOSE and autovacuum logging to
display the total number of pages scanned by VACUUM. This information
was also displayed as a percentage of rel_pages in parenthesis, which
makes it easy to spot trends over time and across tables.

The instrumentation displayed "0 scanned (0.00% of total)" for totally
empty tables. Tweak the instrumentation: have it show "0 scanned
(100.00% of total)" for empty tables instead. This approach is clearer
and more consistent.

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/6e20f4600a420961817ce743be454080745f84d1

Modified Files
--------------
src/backend/access/heap/vacuumlazy.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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