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Add likwid collector

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Thomas Roehl
2021-03-25 14:47:10 +01:00
parent 4fddcb9741
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48
collectors/likwid/groups/sandybridge/TMA.txt Normal file
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SHORT Top down cycle allocation
EVENTSET
FIXC0 INSTR_RETIRED_ANY
FIXC1 CPU_CLK_UNHALTED_CORE
FIXC2 CPU_CLK_UNHALTED_REF
PMC0 UOPS_ISSUED_ANY
PMC1 UOPS_RETIRED_RETIRE_SLOTS
PMC2 IDQ_UOPS_NOT_DELIVERED_CORE
PMC3 INT_MISC_RECOVERY_CYCLES
METRICS
Runtime (RDTSC) [s] time
Runtime unhalted [s] FIXC1*inverseClock
Clock [MHz] 1.E-06*(FIXC1/FIXC2)/inverseClock
CPI FIXC1/FIXC0
IPC FIXC0/FIXC1
Total Slots 4*FIXC1
Slots Retired PMC1
Fetch Bubbles PMC2
Recovery Bubbles 4*PMC3
Front End [%] PMC2/(4*FIXC1)*100
Speculation [%] (PMC0-PMC1+(4*PMC3))/(4*FIXC1)*100
Retiring [%] PMC1/(4*FIXC1)*100
Back End [%] (1-((PMC2+PMC0+(4*PMC3))/(4*FIXC1)))*100
LONG
Formulas:
Total Slots = 4*CPU_CLK_UNHALTED_CORE
Slots Retired = UOPS_RETIRED_RETIRE_SLOTS
Fetch Bubbles = IDQ_UOPS_NOT_DELIVERED_CORE
Recovery Bubbles = 4*INT_MISC_RECOVERY_CYCLES
Front End [%] = IDQ_UOPS_NOT_DELIVERED_CORE/(4*CPU_CLK_UNHALTED_CORE)*100
Speculation [%] = (UOPS_ISSUED_ANY-UOPS_RETIRED_RETIRE_SLOTS+(4*INT_MISC_RECOVERY_CYCLES))/(4*CPU_CLK_UNHALTED_CORE)*100
Retiring [%] = UOPS_RETIRED_RETIRE_SLOTS/(4*CPU_CLK_UNHALTED_CORE)*100
Back End [%] = (1-((IDQ_UOPS_NOT_DELIVERED_CORE+UOPS_ISSUED_ANY+(4*INT_MISC_RECOVERY_CYCLES))/(4*CPU_CLK_UNHALTED_CORE)))*100
--
This performance group measures cycles to determine percentage of time spent in
front end, back end, retiring and speculation. These metrics are published and
verified by Intel. Further information:
Webpage describing Top-Down Method and its usage in Intel vTune:
https://software.intel.com/en-us/vtune-amplifier-help-tuning-applications-using-a-top-down-microarchitecture-analysis-method
Paper by Yasin Ahmad:
https://sites.google.com/site/analysismethods/yasin-pubs/TopDown-Yasin-ISPASS14.pdf?attredirects=0
Slides by Yasin Ahmad:
http://www.cs.technion.ac.il/~erangi/TMA_using_Linux_perf__Ahmad_Yasin.pdf
The performance group was originally published here:
http://perf.mvermeulen.com/2018/04/14/top-down-performance-counter-analysis-part-1-likwid/