1. A non-transitory computer readable storage medium storing instructions for causing one or more processors to perform a method for determining performance of a computer resource service, the method comprising: determining a set of computer systems on which to test the performance of the computer resource service, the set of computer systems comprising at least one of first computer systems and at least one of second computer systems, wherein the first computer systems are located at a first location and the second computer systems are located at a second location; initiating at least one virtual machine on each computer system in the set of computer systems, wherein the at least one virtual machine on each computer system is configured according to a first configuration; determining performance metrics of the at least one virtual machine executing on each computer system in the set of computer systems; and storing, for the at least one virtual machine, a record comprising the performance metrics, the first configuration of the at least one virtual machine, and location information of each computer system executing the at least one virtual machine.