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2026-09-18 - 04:14
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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 Fri Sep 18, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
239049912764,18cyclictest14-21ksoftirqd/022:25:100
239109911322,72cyclictest0-21swapper/119:30:111
23904991092,49cyclictest0-21swapper/020:40:140
239049910841,18cyclictest0-21swapper/019:40:240
239049910414,26cyclictest0-21swapper/020:25:120
239049910372,16cyclictest14-21ksoftirqd/019:35:120
239049910313,47cyclictest0-21swapper/023:35:110
239049910272,19cyclictest14-21ksoftirqd/022:10:110
239049910272,19cyclictest14-21ksoftirqd/019:25:150
2391099977,68cyclictest0-21swapper/100:35:111
2390499968,40cyclictest2673-21seq00:15:130
2391099948,64cyclictest0-21swapper/121:50:101
23910999410,64cyclictest0-21swapper/100:10:151
23904999463,20cyclictest14-21ksoftirqd/023:20:120
2391099938,66cyclictest0-21swapper/120:15:121
23910999311,65cyclictest0-21swapper/123:45:231
23904999366,17cyclictest14-21ksoftirqd/022:00:130
23904999363,18cyclictest14-21ksoftirqd/021:35:110
2391099928,62cyclictest0-21swapper/122:50:131
23910999210,63cyclictest0-21swapper/123:05:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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