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2025-11-15 - 03:43
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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 rack3slot6.osadl.org (updated Sat Nov 15, 2025 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
59149912219,94cyclictest26-21ksoftirqd/122:15:151
59149911415,22cyclictest26-21ksoftirqd/100:25:171
59149911273,28cyclictest26-21ksoftirqd/100:05:151
59149911272,28cyclictest26-21ksoftirqd/122:00:131
59069910474,18cyclictest14-21ksoftirqd/022:45:140
59149910352,33cyclictest26-21ksoftirqd/100:30:161
59149910257,32cyclictest26-21ksoftirqd/122:55:131
59149910247,36cyclictest26-21ksoftirqd/120:05:161
2860121020,6chrt28604-21grep20:10:350
59149910154,31cyclictest26-21ksoftirqd/122:05:251
59149910013,67cyclictest0-21swapper/123:00:131
5914999949,31cyclictest26-21ksoftirqd/121:40:141
5914999914,64cyclictest0-21swapper/100:15:131
47592990,6chrt4760-21sshd23:35:430
48552985,83sleep04878-21sh19:05:260
5914999714,65cyclictest0-21swapper/120:45:161
5914999713,64cyclictest0-21swapper/122:10:131
5914999710,68cyclictest0-21swapper/123:50:121
5914999516,57cyclictest0-21swapper/100:10:141
5914999514,64cyclictest0-21swapper/119:35:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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