The utilization corrected fetch ratio is an estimation of what the fetch ratio would be if the application was changed so that 100% fetch utilization was achieved, for example, by changing a data structure to a more compact representation. It does not take the effect of other suggested changes into account, for example, blocking advice.

The utilization corrected fetch ratio can be displayed for the entire application, a loop or an instruction group. When it is displayed for a loop or an instruction group it is the utilization corrected fetch ratio of that specific part of the code if that specific part of the code was fixed.