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2026-05-18 - 06:40
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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 Mon May 18, 2026 00:46:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3730888993811,379cyclictest0-21swapper/419:27:024
3730888993810,380cyclictest0-21swapper/420:32:024
3730888993810,380cyclictest0-21swapper/420:32:014
3730888993810,380cyclictest0-21swapper/419:12:014
3730888993800,379cyclictest0-21swapper/420:12:024
3730888993800,1cyclictest0-21swapper/419:47:024
3730888993800,1cyclictest0-21swapper/419:43:024
373087499380379,1cyclictest3770787-21kworker/2:023:17:022
373087499379378,1cyclictest3770787-21kworker/2:000:16:022
373087499378376,1cyclictest3770787-21kworker/2:022:39:022
373087499378376,1cyclictest0-21swapper/220:55:022
373087499378376,1cyclictest0-21swapper/200:02:022
373087499378375,2cyclictest3770787-21kworker/2:023:55:022
373087499377376,1cyclictest3770787-21kworker/2:022:41:022
373087499377376,1cyclictest0-21swapper/223:11:022
373087499377376,1cyclictest0-21swapper/200:30:022
373087499376375,1cyclictest3770787-21kworker/2:022:49:022
373087499376375,1cyclictest3770787-21kworker/2:021:19:022
373087499376375,1cyclictest0-21swapper/223:03:022
373087499376375,1cyclictest0-21swapper/222:59:012
373087499376375,1cyclictest0-21swapper/222:34:022
373087499376375,1cyclictest0-21swapper/222:25:022
373087499376375,1cyclictest0-21swapper/221:46:012
373087499375374,1cyclictest4028537-21kworker/2:100:22:022
373087499375374,1cyclictest0-21swapper/219:44:022
3730874993750,1cyclictest0-21swapper/223:38:012
373087499374373,1cyclictest3770787-21kworker/2:021:24:012
373087499374373,1cyclictest0-21swapper/221:14:022
373087499374373,1cyclictest0-21swapper/221:07:022
373087499374372,2cyclictest3770787-21kworker/2:022:15:022
373087499374371,1cyclictest3770787-21kworker/2:022:14:022
373087499373372,1cyclictest4028537-21kworker/2:100:27:022
373087499373372,1cyclictest3770787-21kworker/2:023:20:022
373087499373372,1cyclictest3770787-21kworker/2:022:21:022
373087499373372,1cyclictest3770787-21kworker/2:021:39:022
373087499373372,1cyclictest0-21swapper/220:10:022
373087499373370,2cyclictest3770787-21kworker/2:023:33:012
373087499372371,1cyclictest3770787-21kworker/2:023:46:022
373087499372371,1cyclictest3770787-21kworker/2:022:50:012
373087499371370,1cyclictest3770787-21kworker/2:021:26:022
373087499371370,1cyclictest3770787-21kworker/2:000:14:022
373087499371369,1cyclictest0-21swapper/220:46:022
373087499370369,1cyclictest4028537-21kworker/2:100:38:022
373087499370368,1cyclictest4034424-21kworker/2:219:37:022
373085999369368,1cyclictest3701524-21kworker/0:300:06:020
373087499368367,1cyclictest4034424-21kworker/2:219:53:022
373087499368367,1cyclictest3770787-21kworker/2:020:41:022
373087499368366,1cyclictest3770787-21kworker/2:020:38:022
373087499367366,1cyclictest4034424-21kworker/2:219:22:022
373087499367365,1cyclictest4034424-21kworker/2:219:48:022
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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