A system to detect a network deficiency, in one example embodiment, comprises a receiving module to receive utilization metrics of at least one network resource, wherein the utilization metrics are collected and made available at a network level, an aggregator to aggregate the utilization metrics of at least one network resource with the utilization metrics of a plurality of the network resources, a processing module to determine a level of aggregated utilization metrics of the network resources, and a detecting module to detect a precursor indicative of a network traffic deterioration based on the level of the aggregated utilization metrics.