Generate a B<num>-prime RSA key and use it to run the benchmarks. This option
is only effective if RSA algorithm is specified to test.
+=item B<-seconds num>
+
+Run bechmarks for B<num> seconds.
+
+=item B<-bytes num>
+
+Run bechmarks on B<num>-byte buffers. Affects ciphers, digests and the CSPRNG.
+
=item B<[zero or more test algorithms]>
If any options are given, B<speed> tests those algorithms, otherwise all of