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2026-06-27 - 14:08
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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 50 highest latencies:
System rackcslot6.osadl.org (updated Sat Jun 27, 2026 00:46:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
151633599400397,2cyclictest1556245-21kworker/3:221:27:013
1516314993990,398cyclictest0-21swapper/022:30:020
1516314993980,1cyclictest0-21swapper/021:03:010
151633599397394,2cyclictest0-21swapper/323:48:023
1516314993970,396cyclictest0-21swapper/022:43:010
151633599396394,1cyclictest1724675-21kworker/3:100:01:013
151633599396394,1cyclictest0-21swapper/322:06:023
151633599396394,1cyclictest0-21swapper/322:06:023
151631499396395,1cyclictest1581404-21kworker/0:221:39:020
151631499396395,1cyclictest1581404-21kworker/0:221:28:010
151631499396395,1cyclictest1581404-21kworker/0:220:25:010
151631499396394,1cyclictest1581404-21kworker/0:220:55:010
151631499396394,1cyclictest1581404-21kworker/0:219:55:010
1516314993960,395cyclictest0-21swapper/022:02:020
1516314993950,395cyclictest0-21swapper/021:15:020
151633599394393,1cyclictest1556245-21kworker/3:222:28:013
151633599394393,1cyclictest1556245-21kworker/3:221:51:023
151633599394393,1cyclictest1556245-21kworker/3:221:21:023
151633599394393,1cyclictest0-21swapper/323:55:023
151633599394393,1cyclictest0-21swapper/323:44:023
151633599394393,1cyclictest0-21swapper/323:19:013
151633599394392,1cyclictest0-21swapper/300:38:013
151633599394391,2cyclictest1724675-21kworker/3:100:28:013
151631499394393,1cyclictest1581404-21kworker/0:220:48:020
151631499394393,1cyclictest1581404-21kworker/0:220:32:010
151631499394392,2cyclictest1581404-21kworker/0:219:46:020
151635099393391,1cyclictest0-21swapper/523:47:025
151633599393392,1cyclictest0-21swapper/322:37:013
151633599393392,1cyclictest0-21swapper/300:08:023
151633599393391,1cyclictest1724675-21kworker/3:123:33:023
151633599393391,1cyclictest0-21swapper/323:13:013
151633599393391,1cyclictest0-21swapper/322:48:013
151631499393392,1cyclictest1581404-21kworker/0:220:53:020
151631499393392,1cyclictest1581404-21kworker/0:219:31:010
151633599392391,1cyclictest1556245-21kworker/3:222:21:023
151633599392391,1cyclictest1556245-21kworker/3:221:57:013
151633599392390,1cyclictest0-21swapper/321:46:023
151633599392390,1cyclictest0-21swapper/319:25:013
151633099392391,1cyclictest0-21swapper/221:31:022
151631499392391,1cyclictest1581404-21kworker/0:219:54:020
151631499392391,1cyclictest1581404-21kworker/0:219:23:010
151633599391390,1cyclictest2985261-21kworker/3:020:00:013
151633599391390,1cyclictest1556245-21kworker/3:222:00:023
151633599391390,1cyclictest1556245-21kworker/3:221:40:023
151633599391390,1cyclictest0-21swapper/323:06:023
151633599391389,1cyclictest1724675-21kworker/3:123:36:023
151633599391389,1cyclictest1724675-21kworker/3:123:36:013
151633599391389,1cyclictest1556245-21kworker/3:220:35:013
151633599391389,1cyclictest0-21swapper/300:19:023
151633599391389,1cyclictest0-21swapper/300:14:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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