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2026-05-06 - 14:20
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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 06, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22444991189,71cyclictest0-21swapper/009:30:150
336621030,5sleep03369-21grep12:15:370
118442870,5sleep011847-21tr11:10:180
2191327917,50sleep00-21swapper/007:06:070
22447997848,17cyclictest26-21ksoftirqd/112:05:131
22447997848,17cyclictest26-21ksoftirqd/112:05:131
68712770,6sleep10-21swapper/110:55:251
22447997748,19cyclictest26-21ksoftirqd/110:30:151
2244499756,12cyclictest0-21swapper/007:50:110
22447997344,17cyclictest26-21ksoftirqd/110:40:141
22447997242,17cyclictest0-21swapper/112:20:111
22447997140,17cyclictest0-21swapper/108:15:151
2205827131,29sleep10-21swapper/107:07:431
22447996940,17cyclictest0-21swapper/107:25:111
22447996936,19cyclictest0-21swapper/111:40:141
22444996833,21cyclictest14-21ksoftirqd/008:35:130
22447996641,15cyclictest0-21swapper/111:10:121
22447996634,18cyclictest0-21swapper/108:35:141
22447996536,18cyclictest0-21swapper/107:45:131
22447996523,10cyclictest26-21ksoftirqd/107:10:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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