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2025-12-26 - 11:32
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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 rack3slot6.osadl.org (updated Fri Dec 26, 2025 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
775828262,11sleep10-21swapper/119:05:151
915527517,48sleep00-21swapper/019:08:480
79302730,7sleep07932-21grep20:35:020
9452997236,30cyclictest14-21ksoftirqd/023:17:420
9452997133,32cyclictest14-21ksoftirqd/020:35:400
9452996933,30cyclictest14-21ksoftirqd/020:07:050
9455996834,29cyclictest26-21ksoftirqd/122:20:181
9452996834,17cyclictest14-21ksoftirqd/019:20:120
945299676,52cyclictest10802-21apt-get23:45:140
945299676,21cyclictest18537-21apt-get21:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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