mirror of
https://github.com/ClusterCockpit/cc-metric-collector.git
synced 2024-11-14 22:17:26 +01:00
33 lines
1.0 KiB
Plaintext
33 lines
1.0 KiB
Plaintext
|
SHORT Branch prediction miss rate/ratio
|
||
|
|
|
||
|
|
EVENTSET
|
||
|
|
FIXC1 ACTUAL_CPU_CLOCK
|
||
|
|
FIXC2 MAX_CPU_CLOCK
|
||
|
|
PMC0 RETIRED_INSTRUCTIONS
|
||
|
|
PMC1 CPU_CLOCKS_UNHALTED
|
||
|
|
PMC2 RETIRED_BRANCH_INSTR
|
||
|
|
PMC3 RETIRED_MISP_BRANCH_INSTR
|
||
|
|
|
||
|
|
METRICS
|
||
|
|
Runtime (RDTSC) [s] time
|
||
|
|
Runtime unhalted [s] FIXC1*inverseClock
|
||
|
|
Clock [MHz] 1.E-06*(FIXC1/FIXC2)/inverseClock
|
||
|
|
CPI PMC1/PMC0
|
||
|
|
Branch rate PMC2/PMC0
|
||
|
|
Branch misprediction rate PMC3/PMC0
|
||
|
|
Branch misprediction ratio PMC3/PMC2
|
||
|
|
Instructions per branch PMC0/PMC2
|
||
|
|
|
||
|
|
LONG
|
||
|
|
Formulas:
|
||
|
|
Branch rate = RETIRED_BRANCH_INSTR/RETIRED_INSTRUCTIONS
|
||
|
|
Branch misprediction rate = RETIRED_MISP_BRANCH_INSTR/RETIRED_INSTRUCTIONS
|
||
|
|
Branch misprediction ratio = RETIRED_MISP_BRANCH_INSTR/RETIRED_BRANCH_INSTR
|
||
|
|
Instructions per branch = RETIRED_INSTRUCTIONS/RETIRED_BRANCH_INSTR
|
||
|
|
-
|
||
|
|
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 ratio of all branch instruction where mispredicted.
|
||
|
|
Instructions per branch is 1/branch rate.
|
||
|
|
|