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27 lines
847 B
Plaintext
27 lines
847 B
Plaintext
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SHORT Branch prediction miss rate/ratio
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EVENTSET
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PMC0 INSTRUCTIONS_RETIRED
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PMC1 BRANCH_RETIRED
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PMC2 BRANCH_MISPREDICT_RETIRED
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METRICS
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Runtime (RDTSC) [s] time
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Branch rate PMC1/PMC0
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Branch misprediction rate PMC2/PMC0
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Branch misprediction ratio PMC2/PMC1
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Instructions per branch PMC0/PMC1
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LONG
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Formulas:
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Branch rate = BRANCH_RETIRED/INSTRUCTIONS_RETIRED
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Branch misprediction rate = BRANCH_MISPREDICT_RETIRED/INSTRUCTIONS_RETIRED
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Branch misprediction ratio = BRANCH_MISPREDICT_RETIRED/BRANCH_RETIRED
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Instructions per branch = INSTRUCTIONS_RETIRED/BRANCH_RETIRED
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-
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The rates state how often on average a branch or a mispredicted branch occurred
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per instruction retired in total. The branch misprediction ratio sets directly
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into relation what ration of all branch instruction where mispredicted.
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Instructions per branch is 1/branch rate.
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