A method, system, and apparatus to divide a computing job into micro-jobs and allocate the execution of the micro-jobs to times when needed resources comply with one or more idleness criteria is provided. The micro-jobs are executed on an ongoing basis, but only when the resources needed by the micro-jobs are not needed by other jobs. A software program utilizing this methodology may be run at all times while the computer is powered up without impacting the performance of other software programs running on the same computer system.