Like all audio applications terminatorX’ performance improves significantly from running with realtime scheduling priority. However current Linux or *BSD systems don’t allow regular users to achieve realtime priority, so you need to install terminatorX suid-root if you want to allow regular users to run terminatorX with realtime priority. Note: installing any program suid-root is potentially dangerous and could be exploited – so if other people have access to this machine, too, you should reduce the number of suid-root programs. The old suid-root method has gone – you have to configure terminatorX with POSIX capabilities to allow running suid-root: • –enable-capabilities: this method (enabled by default) drops root privileges very early (which is good) and only keeps the capability of renice-ing processes. It is Linux-specific though and requires a not-too-old 2.4.* kernel and the libcap library. Again: this method might have yet unknown flaws so if you want to be 100% sure that your