The following command intends to kill queries which have execute time greater than 30s and save terminated queries to database.

```
pt-kill --host=localhost --user=root --password=root \
--busy-time=30 --interval=5s \
--log-dsn=h=localhost,D=pt_kill,t=kill_log,P=3306,u=root,p=root \
--kill --daemonize --ignore-user=backup
```