mirror of
https://github.com/ClusterCockpit/cc-metric-collector.git
synced 2024-09-20 15:37:27 +02:00
26 lines
846 B
Plaintext
26 lines
846 B
Plaintext
SHORT Branch prediction miss rate/ratio
|
|
|
|
EVENTSET
|
|
PMC0 INSTRUCTIONS_RETIRED
|
|
PMC1 BRANCH_RETIRED
|
|
PMC2 BRANCH_MISPREDICT_RETIRED
|
|
|
|
METRICS
|
|
Runtime (RDTSC) [s] time
|
|
Branch rate PMC1/PMC0
|
|
Branch misprediction rate PMC2/PMC0
|
|
Branch misprediction ratio PMC2/PMC1
|
|
Instructions per branch PMC0/PMC1
|
|
|
|
LONG
|
|
Formulas:
|
|
Branch rate = BRANCH_RETIRED/INSTRUCTIONS_RETIRED
|
|
Branch misprediction rate = BRANCH_MISPREDICT_RETIRED/INSTRUCTIONS_RETIRED
|
|
Branch misprediction ratio = BRANCH_MISPREDICT_RETIRED/BRANCH_RETIRED
|
|
Instructions per branch = INSTRUCTIONS_RETIRED/BRANCH_RETIRED
|
|
-
|
|
The rates state how often on average a branch or a mispredicted branch occurred
|
|
per instruction retired in total. The branch misprediction ratio sets directly
|
|
into relation what ration of all branch instruction where mispredicted.
|
|
Instructions per branch is 1/branch rate.
|