Branch Mispredict Performance ImpactBranch Mispredict Performance Impact((Mispredicted Branches Retired * 20) / Clockticks)*100
As a general guide these numbers have been derived from experienced performance engineers:
Low |
High |
|---|---|
|
0.2 |
2 |
A high value for this ratio combined with a low value for the Branch Prediction Rate ratio indicates that branch prediction misses are causing a significant negative performance impact and/or the branch misprediction rate is low. If the performance impact metric is low, this issue may not be worth further investigation.
Advice: See Avoiding Branch Mispredictions
