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2025-09-19 - 01:40
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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 Thu Sep 18, 2025 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9495999857,23cyclictest26-21ksoftirqd/110:35:131
778329137,38sleep00-21swapper/007:05:160
9495999052,21cyclictest26-21ksoftirqd/109:05:151
9495998150,18cyclictest26-21ksoftirqd/111:55:161
774128032,35sleep10-21swapper/107:05:141
9489997655,10cyclictest14-21ksoftirqd/008:30:120
9489997625,44cyclictest6595-21aten2.4-expect10:00:170
9495997453,13cyclictest26-21ksoftirqd/107:20:121
949599742,56cyclictest23150-21needreboot09:15:331
9489997246,15cyclictest14-21ksoftirqd/009:30:160
9489997145,15cyclictest14-21ksoftirqd/011:20:150
9489997143,19cyclictest14-21ksoftirqd/008:45:150
9489997140,18cyclictest0-21swapper/009:55:140
9489997042,19cyclictest14-21ksoftirqd/008:15:240
9489997042,15cyclictest14-21ksoftirqd/010:20:190
9489996943,17cyclictest14-21ksoftirqd/011:30:120
9489996942,17cyclictest14-21ksoftirqd/012:10:130
9489996941,17cyclictest14-21ksoftirqd/008:10:140
9489996842,15cyclictest14-21ksoftirqd/009:45:210
9489996841,22cyclictest14-21ksoftirqd/012:30:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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