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2026-04-04 - 12:26
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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 Sat Apr 04, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139479911962,30cyclictest26-21ksoftirqd/122:40:141
139439910274,14cyclictest14-21ksoftirqd/020:15:110
139439910073,15cyclictest14-21ksoftirqd/021:30:230
13943999971,14cyclictest14-21ksoftirqd/020:25:140
13943999967,20cyclictest14-21ksoftirqd/000:05:150
13943999668,18cyclictest14-21ksoftirqd/023:10:120
1394799957,46cyclictest0-21swapper/119:40:131
13947999347,26cyclictest26-21ksoftirqd/123:40:121
13943999365,18cyclictest14-21ksoftirqd/019:50:160
13943999365,17cyclictest14-21ksoftirqd/019:35:110
13943999263,18cyclictest14-21ksoftirqd/021:15:240
13943999263,17cyclictest14-21ksoftirqd/022:45:140
13943999163,16cyclictest14-21ksoftirqd/020:35:120
13943999162,19cyclictest14-21ksoftirqd/021:25:140
13943999063,17cyclictest14-21ksoftirqd/022:35:120
13943998963,17cyclictest14-21ksoftirqd/020:45:110
13943998757,17cyclictest14-21ksoftirqd/023:20:130
13943998455,19cyclictest14-21ksoftirqd/020:50:120
1288328431,41sleep00-21swapper/019:05:240
13943998356,18cyclictest14-21ksoftirqd/019:30:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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