sub foo
{
  $dbh->begin();
  my $bar = select_some_stuff_from_pgsql($dbh);
  my $ret = system("echo This gets written to stdout");
  insert_some_stuff_into_pgsql($dbh);  
  $dbh->commit();
}

##</code><code>##

26   3.393679    127.0.0.1 -> 127.0.0.1    POSTGRESQL  Request This is written to stdout... llamas

27   3.394063    127.0.0.1 -> 127.0.0.1    POSTGRESQL  Response USFATAL C08P01 Minvalid frontend message type 84 Fpostgres.c L366 RSocketBackend