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2026-08-01 - 19:36
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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 Aug 01, 2026 12:46:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
192864399377376,1cyclictest0-21swapper/011:22:020
192864399375374,1cyclictest1642132-21kworker/0:012:03:010
192864399375374,1cyclictest0-21swapper/009:29:020
192864399375373,1cyclictest1642132-21kworker/0:007:33:020
192864399374372,1cyclictest1642132-21kworker/0:007:35:020
192864399373372,1cyclictest0-21swapper/007:42:010
192864399373371,1cyclictest0-21swapper/007:15:020
192866199371369,1cyclictest0-21swapper/208:47:022
192864399370369,1cyclictest1642132-21kworker/0:010:21:010
192866199369368,1cyclictest2061863-21kworker/2:111:26:022
192864399369368,1cyclictest1642132-21kworker/0:011:18:020
192864399369368,1cyclictest1642132-21kworker/0:008:13:010
192864399369367,1cyclictest0-21swapper/008:44:010
192866199368366,1cyclictest0-21swapper/212:01:022
192864399368367,1cyclictest1642132-21kworker/0:009:57:010
192864399368367,1cyclictest0-21swapper/010:42:020
192864399368367,1cyclictest0-21swapper/010:37:020
192864399368367,1cyclictest0-21swapper/008:50:010
192864399368367,1cyclictest0-21swapper/008:09:010
192864399368367,1cyclictest0-21swapper/008:09:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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