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2026-05-27 - 06:22
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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 May 27, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146579912712,33cyclictest0-21swapper/019:10:130
146579912711,32cyclictest0-21swapper/020:00:130
146579912512,36cyclictest0-21swapper/019:50:120
146579912511,37cyclictest0-21swapper/023:30:130
146579911913,33cyclictest0-21swapper/022:35:110
146579911612,37cyclictest0-21swapper/019:30:110
146619910872,25cyclictest26-21ksoftirqd/120:15:221
146619910871,25cyclictest26-21ksoftirqd/121:20:131
146619910666,27cyclictest26-21ksoftirqd/123:00:221
146619910665,28cyclictest26-21ksoftirqd/121:15:131
146619910424,68cyclictest0-21swapper/121:25:121
146579910313,31cyclictest0-21swapper/023:55:120
146579910312,78cyclictest0-21swapper/020:40:120
146579910011,30cyclictest0-21swapper/020:50:150
146579910011,30cyclictest0-21swapper/020:50:150
14661999952,34cyclictest26-21ksoftirqd/122:20:161
14661999750,35cyclictest26-21ksoftirqd/100:25:131
14661999616,67cyclictest0-21swapper/100:00:131
1466199947,66cyclictest801-21gpm00:10:141
14661999443,36cyclictest26-21ksoftirqd/122:40:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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