Provided is a process including: receiving biometric measurements； receiving from application components or network hosts, events or metrics indicative of objective performance； correlating psychophysical-performance values based on the biometric measurements indicative of psychophysical performance with objective-performance values based on the events or metrics indicative of objective performance； storing the correlation between the psychophysical-performance values and the objective-performance values in memory； and accessing the correlation to select hosts, application components, or routines to be adjusted to improve objective performance of the distributed application or psychophysical performance of the distributed application.
