For performance reasons, you probably want to simply disallow paginating through all users in the system anyhow. Fetching the 1000th page of something requires the DB to spend time looking through a lot of those rows, at least in our version of mysql.

```
mysql> select username from auth_user order by username limit 1, 10 \G
10 rows in set (0.01 sec)

mysql> select username from auth_user order by username limit 900000, 10
10 rows in set (1.67 sec)
```