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2025-07-02 - 07:05
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot5.osadl.org (updated Wed Jul 02, 2025 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
999699290,28cyclictest18472-21apt-get20:35:151
999699290,1cyclictest19329-21apt-get19:30:031
999199290,28cyclictest0-21swapper/023:10:130
10005992928,0cyclictest21340-21apt-get21:50:133
1000599290,28cyclictest0-21swapper/323:10:013
1000599290,28cyclictest0-21swapper/319:55:153
10000992927,1cyclictest0-21swapper/219:15:002
1000099290,28cyclictest4977-21apt-get21:15:142
1000099290,28cyclictest0-21swapper/200:25:132
1000099290,1cyclictest29848-21sh00:25:002
9996992828,0cyclictest14906-21apt-get19:20:141
9996992828,0cyclictest0-21swapper/120:10:031
9996992827,1cyclictest0-21swapper/122:25:001
9996992827,1cyclictest0-21swapper/121:45:111
9996992827,1cyclictest0-21swapper/100:05:151
999699280,27cyclictest0-21swapper/121:25:141
999699280,0cyclictest0-21swapper/121:35:111
9991992828,0cyclictest0-21swapper/000:30:140
999199280,27cyclictest0-21swapper/023:35:170
999199280,0cyclictest0-21swapper/000:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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