+Cap bandwidth used by this job. The number is in bytes/sec, the normal postfix
+rules apply. You can use \fBrate\fR=500k to limit reads and writes to 500k each,
+or you can specify read and writes separately. Using \fBrate\fR=1m,500k would
+limit reads to 1MB/sec and writes to 500KB/sec. Capping only reads or writes
+can be done with \fBrate\fR=,500k or \fBrate\fR=500k,. The former will only
+limit writes (to 500KB/sec), the latter will only limit reads.