Mention that autovacuum also needs stats.

diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index f3c9b0bb9718c4a72085eda6338390f33a2c8a2c..791f5d0bd0308da918712afd09023adac18ade79 100644 (file)
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -2920,6 +2920,8 @@ SELECT * FROM parent WHERE key = 2400;
        <para>
         Controls whether the server should start the
         autovacuum subprocess.  This is off by default.
+        <varname>stats_start_collector</> and <varname>stats_row_level</>
+        must also be on for this to start.
         This option can only be set at server start or in the
         <filename>postgresql.conf</filename> file.
        </para>