doc: added autovacuum metrics description
@@ -1781,6 +1781,122 @@ Default config:
</tr>
</table>
+- **Autovacuum Utilization (instant)**
+
+ <table>
+ <tr>
+ <th>Name</th>
+ <td>PostgreSQL Autovacuum: Utilization per [MAMONSU_INTERVAL] seconds</td>
+ </tr>
+ <tr>
+ <th>Key</th>
+ <td>pgsql.autovacumm.utilization[]</td>
+ </tr>
+ <tr>
+ <th>Type</th>
+ <td>Numeric (float)</td>
+ </tr>
+ <tr>
+ <th>Units</th>
+ <td></td>
+ </tr>
+ <tr>
+ <th>Delta</th>
+ <td>As Is</td>
+ </tr>
+ <tr>
+ <th>Supported Version</th>
+ <td>9.5+</td>
+ </tr>
+ </table>
+
+- **Autovacuum Utilization (average per 5 minutes)**
+
+ <table>
+ <tr>
+ <th>Name</th>
+ <td>PostgreSQL Autovacuum: Utilization per 5 minutes</td>
+ </tr>
+ <tr>
+ <th>Key</th>
+ <td>pgsql.autovacumm.utilization.avg5[]</td>
+ </tr>
+ <tr>
+ <th>Type</th>
+ <td>Numeric (float)</td>
+ </tr>
+ <tr>
+ <th>Units</th>
+ <td></td>
+ </tr>
+ <tr>
+ <th>Delta</th>
+ <td>As Is</td>
+ </tr>
+ <tr>
+ <th>Supported Version</th>
+ <td>9.5+</td>
+ </tr>
+ </table>
+
+- **Autovacuum Utilization (average per 15 minutes)**
+
+ <table>
+ <tr>
+ <th>Name</th>
+ <td>PostgreSQL Autovacuum: Utilization per 15 minutes</td>
+ </tr>
+ <tr>
+ <th>Key</th>
+ <td>pgsql.autovacumm.utilization.avg15[]</td>
+ </tr>
+ <tr>
+ <th>Type</th>
+ <td>Numeric (float)</td>
+ </tr>
+ <tr>
+ <th>Units</th>
+ <td></td>
+ </tr>
+ <tr>
+ <th>Delta</th>
+ <td>As Is</td>
+ </tr>
+ <tr>
+ <th>Supported Version</th>
+ <td>9.5+</td>
+ </tr>
+ </table>
+
+- **Autovacuum Utilization (average per 30 minutes)**
+
+ <table>
+ <tr>
+ <th>Name</th>
+ <td>PostgreSQL Autovacuum: Utilization per 30 minutes</td>
+ </tr>
+ <tr>
+ <th>Key</th>
+ <td>pgsql.autovacumm.utilization.avg30[]</td>
+ </tr>
+ <tr>
+ <th>Type</th>
+ <td>Numeric (float)</td>
+ </tr>
+ <tr>
+ <th>Units</th>
+ <td></td>
+ </tr>
+ <tr>
+ <th>Delta</th>
+ <td>As Is</td>
+ </tr>
+ <tr>
+ <th>Supported Version</th>
+ <td>9.5+</td>
+ </tr>
+ </table>
+
*Autovacuum Workers* evaluates as count of `pg_stat_activity.backend_type = 'autovacuum worker'` for PG 10+ and as summa of avtovacuum queries with not idle state for PG 9.6 and lower.
## Background Writer
