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2026-04-22 - 08:11
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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 rackeslot8.osadl.org (updated Wed Apr 22, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2205012420,12sleep014-21ksoftirqd/000:27:240
3947060993027,1cyclictest0-21swapper/300:05:213
3947060992927,1cyclictest0-21swapper/321:40:023
427812260,3sleep2421rcuc/222:35:012
3947060992623,1cyclictest0-21swapper/323:35:193
3947060992623,1cyclictest0-21swapper/320:40:003
3947060992623,1cyclictest0-21swapper/300:00:243
394706099250,21cyclictest135867-21sleep23:35:013
3947060992421,1cyclictest0-21swapper/321:25:183
3947060992421,1cyclictest0-21swapper/300:00:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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