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2025-04-02 - 08:15
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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 10 highest latencies:
System rack0slot0.osadl.org (updated Wed Apr 02, 2025 00:45:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3206021340,4sleep3802299cyclictest00:21:353
2347021190,1sleep623469-21bash22:41:126
482421130,0sleep60-21swapper/600:02:066
482421130,0sleep60-21swapper/600:02:066
430621110,0sleep30-21swapper/300:02:033
430621110,0sleep30-21swapper/300:02:023
88332800,4sleep5803599cyclictest21:27:235
262642790,0sleep00-21swapper/023:08:070
103112780,1sleep40-21swapper/421:11:044
322332770,0sleep30-21swapper/322:02:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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