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2026-10-22 - 08:03
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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 Thu Oct 22, 2026 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2791797993532,1cyclictest0-21swapper/300:00:253
30701592330,3sleep30-21swapper/322:25:263
2791797992617,6cyclictest2889691-21sleep20:25:003
2791797992421,1cyclictest0-21swapper/300:20:223
2791797992320,1cyclictest0-21swapper/319:35:253
2791797992320,1cyclictest0-21swapper/319:35:253
279179799231,16cyclictest2962750-21taskset21:20:003
2791797992219,1cyclictest0-21swapper/300:40:013
2791797992118,1cyclictest0-21swapper/322:55:013
2791797992118,1cyclictest0-21swapper/319:20:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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