title: Does Pgbench modify the database?
body: <p>I'm trying to generate &quot;locks&quot; in my postgresql database, i used pgbench to create an activity in the database while lanching a vacuum full or reindex to generate some process &quot;locks&quot; and nothing happened ...</p>
  <p>so i'm not sure if pgbench creates a &quot;real&quot; activity in the database,</p>
  <p>Thanks in advance for your answers.</p>