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2026-07-04 - 22:39
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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 Jul 04, 2026 12:46:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5753699373371,1cyclictest0-21swapper/509:11:025
5749699371370,1cyclictest0-21swapper/009:25:020
5749699371369,1cyclictest0-21swapper/010:15:020
5749699371369,1cyclictest0-21swapper/010:05:020
5749699370369,1cyclictest0-21swapper/011:01:020
5749699369368,1cyclictest3266737-21kworker/0:009:33:020
5752299368367,1cyclictest0-21swapper/309:35:023
5749699368367,1cyclictest0-21swapper/009:57:020
5749699367366,1cyclictest0-21swapper/008:41:020
5749699367366,1cyclictest0-21swapper/008:19:030
5749699367365,1cyclictest3266737-21kworker/0:011:20:020
5749699367365,1cyclictest0-21swapper/008:47:020
5749699366365,1cyclictest0-21swapper/011:43:020
5749699366364,1cyclictest3266737-21kworker/0:011:30:020
5749699366364,1cyclictest217668-21kworker/0:212:30:020
5749699366364,1cyclictest0-21swapper/012:11:020
5749699366364,1cyclictest0-21swapper/008:29:020
5749699365364,1cyclictest0-21swapper/010:13:020
5749699364362,1cyclictest217668-21kworker/0:211:54:020
5749699364361,2cyclictest3266737-21kworker/0:010:56:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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