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2021-09-28 - 10:07

Intel(R) Core(TM) i5-8365UE CPU @ 1.60GHz, Linux 5.9.1-rt18 (Profile)

Latency plot of system in rack #e, slot #2
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -n -p90 -i200 -h400 -a2-3 -t2 -q done
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Tue Jul 27, 2021 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26262901614,1cyclictest0-21swapper/311:55:013
2626290160,15cyclictest0-21swapper/311:02:023
2626290160,15cyclictest0-21swapper/310:11:573
2626290150,1cyclictest0-21swapper/310:27:013
2626290150,15cyclictest0-21swapper/312:12:173
2626290150,15cyclictest0-21swapper/309:34:093
2626290150,14cyclictest0-21swapper/311:40:013
26260901514,1cyclictest0-21swapper/207:11:532
26262901414,0cyclictest0-21swapper/309:22:323
26262901414,0cyclictest0-21swapper/307:15:193
26262901412,1cyclictest0-21swapper/307:57:013
2626290140,14cyclictest0-21swapper/312:39:013
2626290140,14cyclictest0-21swapper/312:30:473
2626290140,14cyclictest0-21swapper/312:15:303
2626290140,14cyclictest0-21swapper/312:15:303
2626290140,14cyclictest0-21swapper/312:06:523
2626290140,14cyclictest0-21swapper/312:00:403
2626290140,14cyclictest0-21swapper/311:55:303
2626290140,14cyclictest0-21swapper/311:46:163
2626290140,14cyclictest0-21swapper/311:40:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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