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2026-06-06 - 11:43
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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 Sat Jun 06, 2026 00:46:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2330695993821,1cyclictest0-21swapper/721:00:027
2330695993810,1cyclictest0-21swapper/719:15:017
233069599380379,1cyclictest2604228-21kworker/7:100:04:017
233069599380379,1cyclictest2346165-21kworker/7:119:35:027
2330695993800,379cyclictest0-21swapper/723:18:027
2330695993800,379cyclictest0-21swapper/722:41:027
2330695993800,379cyclictest0-21swapper/722:31:027
2330695993800,379cyclictest0-21swapper/722:28:017
2330695993800,379cyclictest0-21swapper/722:12:027
2330695993800,379cyclictest0-21swapper/721:39:017
2330695993800,379cyclictest0-21swapper/721:26:017
2330695993800,379cyclictest0-21swapper/720:55:027
2330695993800,379cyclictest0-21swapper/700:20:017
2330695993800,1cyclictest0-21swapper/700:36:027
233069599379378,1cyclictest2391363-21kworker/7:221:09:027
2330695993790,1cyclictest0-21swapper/721:41:027
233069599378377,1cyclictest2346165-21kworker/7:120:18:017
233069599378377,1cyclictest2346165-21kworker/7:119:53:027
233069599378377,1cyclictest2346165-21kworker/7:119:49:017
233069599378376,1cyclictest0-21swapper/720:42:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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