Allow pgbench to use a scale larger than 21474.

[postgresql] / doc / src / sgml / pgbench.sgml

diff --git a/doc/src/sgml/pgbench.sgml b/doc/src/sgml/pgbench.sgml
index 58686b1a8b5b7c135e89fc28789e966ed39a4cbb..9ed8b76963cabb9d0d43440342205e53fbbee936 100644 (file)
--- a/doc/src/sgml/pgbench.sgml
+++ b/doc/src/sgml/pgbench.sgml
@@ -185,6 +185,11 @@ pgbench <optional> <replaceable>options</> </optional> <replaceable>dbname</>
         Multiply the number of rows generated by the scale factor.
         For example, <literal>-s 100</> will create 10,000,000 rows
         in the <structname>pgbench_accounts</> table. Default is 1.
+        When the scale is 20,000 or larger, the columns used to
+        hold account identifiers (<structfield>aid</structfield> columns)
+        will switch to using larger integers (<type>bigint</type>),
+        in order to be big enough to hold the range of account
+        identifiers.
        </para>
       </listitem>
      </varlistentry>