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2026-08-29 - 07:37
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Sat Aug 29, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
247539911866,27cyclictest26-21ksoftirqd/121:40:101
24748999671,12cyclictest14-21ksoftirqd/000:20:120
24748999571,11cyclictest14-21ksoftirqd/021:05:110
24753999456,20cyclictest26-21ksoftirqd/123:40:131
24753999455,23cyclictest26-21ksoftirqd/100:30:131
24748999269,12cyclictest14-21ksoftirqd/020:25:250
24748999261,18cyclictest14-21ksoftirqd/020:05:220
24748999261,18cyclictest14-21ksoftirqd/020:05:220
2455129225,16sleep10-21swapper/119:09:191
24748999172,10cyclictest14-21ksoftirqd/023:20:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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