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2026-05-04 - 02:17
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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 Sun May 03, 2026 12:46:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
278893499373371,1cyclictest2798770-21kworker/4:208:08:014
278893499372371,1cyclictest0-21swapper/408:20:024
278893499371370,1cyclictest3073579-21kworker/4:007:30:014
278893499371370,1cyclictest2855875-21kworker/4:109:35:024
278893499371370,1cyclictest0-21swapper/408:10:014
278893499371369,2cyclictest2855875-21kworker/4:111:00:024
278893499371369,1cyclictest0-21swapper/412:35:024
278893499371369,1cyclictest0-21swapper/412:05:024
278893499370369,1cyclictest3073579-21kworker/4:007:10:014
278893499370369,1cyclictest2798770-21kworker/4:208:35:014
278893499370369,1cyclictest0-21swapper/410:35:014
278893499370369,1cyclictest0-21swapper/409:00:024
278893499370368,1cyclictest0-21swapper/410:25:014
278893499369368,1cyclictest0-21swapper/412:10:014
278893499369367,1cyclictest2855875-21kworker/4:109:53:024
278893499368367,1cyclictest3073579-21kworker/4:007:21:024
278893499368367,1cyclictest2855875-21kworker/4:111:11:014
278893499368367,1cyclictest2855875-21kworker/4:110:30:024
278893499368367,1cyclictest2798770-21kworker/4:208:43:014
278893499367366,1cyclictest3073579-21kworker/4:007:43:014
278893499367366,1cyclictest2958172-21kworker/4:011:57:034
278893499367366,1cyclictest2855875-21kworker/4:111:48:034
278893499367366,1cyclictest2855875-21kworker/4:111:48:024
278893499367366,1cyclictest2855875-21kworker/4:111:21:024
278893499367366,1cyclictest2855875-21kworker/4:111:07:014
278893499367366,1cyclictest2855875-21kworker/4:109:47:024
278893499367366,1cyclictest2798770-21kworker/4:208:50:014
278893499367366,1cyclictest2798770-21kworker/4:208:50:014
278893499367366,1cyclictest0-21swapper/410:42:014
278893499367366,1cyclictest0-21swapper/410:02:034
278893499367366,1cyclictest0-21swapper/409:14:024
278893499367366,1cyclictest0-21swapper/407:53:024
278893499367366,1cyclictest0-21swapper/407:36:014
278893499367366,1cyclictest0-21swapper/407:27:024
278893499367366,1cyclictest0-21swapper/407:27:024
278893499367365,2cyclictest2855875-21kworker/4:111:38:034
278893499367365,1cyclictest2855875-21kworker/4:111:33:034
278893499367365,1cyclictest2855875-21kworker/4:110:06:034
278893499367365,1cyclictest2798770-21kworker/4:208:03:014
278893499367365,1cyclictest0-21swapper/411:27:024
278893499366365,1cyclictest3073579-21kworker/4:007:16:014
278893499366365,1cyclictest2958172-21kworker/4:012:17:024
278893499366365,1cyclictest2958172-21kworker/4:012:03:034
278893499366365,1cyclictest2855875-21kworker/4:111:16:024
278893499366365,1cyclictest2855875-21kworker/4:109:58:034
278893499366365,1cyclictest2855875-21kworker/4:109:41:024
278893499366365,1cyclictest2855875-21kworker/4:109:29:024
278893499366365,1cyclictest2855875-21kworker/4:109:16:024
278893499366365,1cyclictest2798770-21kworker/4:208:46:014
278893499366365,1cyclictest2798770-21kworker/4:208:19:014
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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