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2021-06-20 - 03:42

Intel(R) Core(TM) i3-8145UE CPU @ 2.20GHz, Linux 5.10.27-rt36 (Profile)

Latency plot of system in rack #e, slot #6
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 -Sp99 -i200 -h400 -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 rackeslot6.osadl.org (updated Sun Jun 20, 2021 00:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11664995217,17cyclictest0-21swapper/223:09:232
1166499350,24cyclictest0-21swapper/221:51:022
1166499330,1cyclictest2182-21diskmemload23:25:182
1166299330,1cyclictest0-21swapper/023:20:170
1166299330,1cyclictest0-21swapper/021:50:150
1166499320,31cyclictest2182-21diskmemload23:10:152
1166499320,31cyclictest0-21swapper/200:30:142
11668993131,0cyclictest221-1kworker/3:1H23:35:143
11663993130,1cyclictest223-1kworker/1:2H22:10:201
11662993131,0cyclictest0-21swapper/000:30:140
11668993029,1cyclictest221-1kworker/3:1H19:10:143
1166399309,21cyclictest22-21ksoftirqd/122:57:501
1166399309,21cyclictest22-21ksoftirqd/122:57:501
11662993029,1cyclictest22966-21kworker/0:119:50:180
1166899298,21cyclictest34-21ksoftirqd/300:22:163
11668992928,1cyclictest221-1kworker/3:1H23:15:163
11668992928,1cyclictest221-1kworker/3:1H19:15:153
11668992927,1cyclictest221-1kworker/3:1H00:00:163
11668992927,1cyclictest0-21swapper/322:20:163
11664992928,1cyclictest74-1kworker/2:1H20:25:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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