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2021-09-28 - 10:18

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 Tue Sep 07, 2021 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22911993428,2cyclictest652-21grep20:40:143
2291199330,1cyclictest0-21swapper/323:05:183
2291199330,1cyclictest0-21swapper/322:30:153
2291199330,1cyclictest0-21swapper/300:35:213
22902993332,1cyclictest223-1kworker/1:2H19:15:211
22902993331,1cyclictest223-1kworker/1:2H19:35:151
22898993332,1cyclictest10736-21kworker/0:000:05:200
2289899330,1cyclictest0-21swapper/000:25:210
2291199320,31cyclictest0-21swapper/323:50:233
22907993232,0cyclictest10245-21kworker/2:023:30:192
22907993232,0cyclictest10245-21kworker/2:022:00:162
22907993230,1cyclictest15375-21kworker/2:020:00:222
2290799320,0cyclictest0-21swapper/222:40:182
2289899320,1cyclictest0-21swapper/020:15:230
2290799317,21cyclictest27893-21tune2fs21:50:162
22907993130,1cyclictest74-1kworker/2:1H23:15:172
22907993130,1cyclictest74-1kworker/2:1H20:55:172
22907993130,1cyclictest74-1kworker/2:1H20:30:192
22907993130,1cyclictest15375-21kworker/2:019:20:152
22902993130,1cyclictest223-1kworker/1:2H00:30:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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