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| author | Nathan Bossart <nathan@postgresql.org> | 2025-04-30 14:12:59 -0500 |
|---|---|---|
| committer | Nathan Bossart <nathan@postgresql.org> | 2025-04-30 14:12:59 -0500 |
| commit | d5f1b6a75ba3f55a78959c957c3fd25d9569057c (patch) | |
| tree | 6480ed74f2bc1368c1cb0d23718f1d5188c81d21 /src | |
| parent | f60420cff66a9089a9b431f9c07f4a29aae4990a (diff) | |
| download | postgresql-d5f1b6a75ba3f55a78959c957c3fd25d9569057c.tar.gz postgresql-d5f1b6a75ba3f55a78959c957c3fd25d9569057c.zip | |
Further adjust guidance for running vacuumdb after pg_upgrade.
Since pg_upgrade does not transfer the cumulative statistics used
to trigger autovacuum and autoanalyze, the server may take much
longer than expected to process them post-upgrade. Currently, we
recommend analyzing only relations for which optimizer statistics
were not transferred by using the --analyze-in-stages and
--missing-stats-only options. This commit appends another
recommendation to analyze all relations to update the relevant
cumulative statistics by using the --analyze-only option. This is
similar to the recommendation for pg_stat_reset().
Reported-by: Christoph Berg <myon@debian.org>
Reviewed-by: Christoph Berg <myon@debian.org>
Discussion: https://postgr.es/m/aAfxfKC82B9NvJDj%40msg.df7cb.de
Diffstat (limited to 'src')
| -rw-r--r-- | src/bin/pg_upgrade/check.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/bin/pg_upgrade/check.c b/src/bin/pg_upgrade/check.c index 18c2d652bb6..940fc77fc2e 100644 --- a/src/bin/pg_upgrade/check.c +++ b/src/bin/pg_upgrade/check.c @@ -814,9 +814,12 @@ output_completion_banner(char *deletion_script_file_name) } pg_log(PG_REPORT, - "Some optimizer statistics may not have been transferred by pg_upgrade.\n" - "Once you start the new server, consider running:\n" - " %s/vacuumdb %s--all --analyze-in-stages --missing-stats-only", new_cluster.bindir, user_specification.data); + "Some statistics are not transferred by pg_upgrade.\n" + "Once you start the new server, consider running these two commands:\n" + " %s/vacuumdb %s--all --analyze-in-stages --missing-stats-only\n" + " %s/vacuumdb %s--all --analyze-only", + new_cluster.bindir, user_specification.data, + new_cluster.bindir, user_specification.data); if (deletion_script_file_name) pg_log(PG_REPORT, |