1. A computer-implemented method, comprising: receiving a plurality of signals resulting from operation of a computer system; performing a Fourier transform on individual signals of the plurality of signals to obtain a plurality of frequencies; calculating a plurality of beat frequencies for a plurality of pairs of the plurality of frequencies; obtaining a profile of the computer system, the profile including information usable to determine a plurality of reference beat frequencies associated with the computer system; performing a comparison of individual calculated beat frequencies with respective reference beat frequencies from the profile; and transmitting a notification that indicates whether the performed comparison indicates one or more anomalies in operation of the computer system.