1. A method of reducing cost chargeback in an information technology computing environment including multiple resources, comprising: storing resource usage, allocation statistics for a plurality of resources and associated cost policies for the plurality of resources; determining time-based usage patterns for the plurality of resources from the allocation statistics; creating a correlation of response time with resource usages and outstanding input/output instructions for the plurality of resources; based on the time-based usage patterns and the correlation, obtaining a plurality of potential cost reduction recommendations; determining a plurality of integrals based on the plurality of potential cost reduction recommendations, and determining a statistical integral based on the allocation statistics; comparing a difference between the statistical integral and each of the plurality of integrals with a threshold to determine potential final cost reduction recommendations; and providing a final cost reduction recommendation selected from the potential cost reduction recommendations.