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2026-06-18 - 19:52
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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
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Thu Jun 18, 2026 12:46:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271336299381379,1cyclictest2765306-21kworker/3:008:48:013
271336299379378,1cyclictest4181687-21kworker/3:207:25:013
271336299379378,1cyclictest2765306-21kworker/3:009:08:023
271336299379378,1cyclictest0-21swapper/309:58:023
271336299379377,2cyclictest2816450-21kworker/3:211:30:023
271336299378377,1cyclictest2897681-21kworker/3:212:35:023
271336299378377,1cyclictest2879624-21kworker/3:112:03:013
271336299378377,1cyclictest2879624-21kworker/3:112:03:013
271336299378376,1cyclictest2816450-21kworker/3:210:30:023
271336299378376,1cyclictest2816450-21kworker/3:210:30:013
271336299378376,1cyclictest2765306-21kworker/3:009:46:013
271336299378376,1cyclictest0-21swapper/311:20:013
271336299378376,1cyclictest0-21swapper/310:25:013
271336299378376,1cyclictest0-21swapper/308:20:023
271336299378376,1cyclictest0-21swapper/307:45:023
271336299378376,1cyclictest0-21swapper/307:12:023
271336299377376,1cyclictest2897681-21kworker/3:212:25:023
271336299377376,1cyclictest0-21swapper/312:20:023
271336299377376,1cyclictest0-21swapper/309:10:023
271336299377375,1cyclictest2879624-21kworker/3:111:53:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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