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2026-03-25 - 03:32
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Wed Mar 25, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20359912730,46cyclictest0-21swapper/021:30:230
20359912666,21cyclictest14-21ksoftirqd/022:40:160
20359912259,23cyclictest14-21ksoftirqd/000:20:140
20359911347,23cyclictest0-21swapper/023:55:130
20359911347,23cyclictest0-21swapper/023:55:120
20359910979,19cyclictest14-21ksoftirqd/023:45:140
20359910880,17cyclictest14-21ksoftirqd/022:30:110
20359910677,19cyclictest14-21ksoftirqd/022:00:130
20359910676,18cyclictest14-21ksoftirqd/020:05:110
20389910311,70cyclictest0-21swapper/121:05:161
20359910371,20cyclictest0-21swapper/019:15:270
20389910211,64cyclictest0-21swapper/122:55:121
20389910211,64cyclictest0-21swapper/122:55:121
20389910110,68cyclictest0-21swapper/121:00:131
2038991008,69cyclictest0-21swapper/123:25:151
20389910014,65cyclictest0-21swapper/123:35:151
20389910013,64cyclictest0-21swapper/119:30:151
203899998,68cyclictest0-21swapper/122:15:221
2038999912,66cyclictest0-21swapper/122:35:131
203899988,67cyclictest0-21swapper/119:10:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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