1. A method for determining fragmentation in a computing environment, comprising: running a simulation of virtual machine requests for resources in the computing environment for a predetermined time; scaling down the simulation when the predetermined time exceeds a threshold to create a scaled down simulation, the scaling down the simulation including at least one of scaling down the resources in the computing environment and scaling down a number of the virtual machine requests; and iteratively running the scaled down simulation to estimate relative fragmentation of the virtual machine requests against the resources in the computing environment.