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2025-12-28 - 19:49
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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 Sun Dec 28, 2025 12:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1694121330,6sleep0171rcuc/007:55:190
3202129613,37sleep00-21swapper/007:06:010
32580999510,28cyclictest11164-31find07:40:121
32580999414,19cyclictest0-21swapper/110:20:131
32580999236,43cyclictest0-21swapper/108:45:221
3242329216,30sleep10-21swapper/107:09:501
32580999016,18cyclictest0-21swapper/111:10:231
32580999014,17cyclictest0-21swapper/108:25:141
32580998913,16cyclictest0-21swapper/112:20:151
32574998953,23cyclictest0-21swapper/012:30:150
32580998816,17cyclictest0-21swapper/110:30:131
32580998815,63cyclictest0-21swapper/107:15:161
32580998716,18cyclictest0-21swapper/111:30:131
32580998715,18cyclictest0-21swapper/108:30:171
32580998714,20cyclictest0-21swapper/110:55:121
32580998714,19cyclictest0-21swapper/111:45:121
32580998712,19cyclictest0-21swapper/111:25:221
32580998712,16cyclictest0-21swapper/111:40:141
3257499876,73cyclictest0-21swapper/012:15:160
3258099866,24cyclictest21982-21apt-get09:40:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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