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2026-08-10 - 20:56
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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 100 highest latencies:
System rackcslot6.osadl.org (updated Mon Aug 10, 2026 12:46:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
831094993820,381cyclictest0-21swapper/111:51:031
831094993820,381cyclictest0-21swapper/110:29:031
831094993820,381cyclictest0-21swapper/109:49:021
831094993820,381cyclictest0-21swapper/109:19:021
83112099381380,1cyclictest964371-21kworker/4:111:09:024
83112099381380,1cyclictest837790-21kworker/4:108:43:024
83112099381380,1cyclictest837790-21kworker/4:108:43:024
83112099381380,1cyclictest1003527-21kworker/4:012:32:034
831094993810,2cyclictest0-21swapper/112:29:021
831094993810,1cyclictest0-21swapper/111:23:021
831094993810,1cyclictest0-21swapper/109:33:031
83112099380379,1cyclictest901179-21kworker/4:010:47:034
83112099380379,1cyclictest901179-21kworker/4:009:11:024
83108799380379,1cyclictest0-21swapper/012:32:020
83108799380378,1cyclictest1808117-21kworker/0:111:57:020
83109499379377,1cyclictest0-21swapper/110:00:031
83108799379378,1cyclictest1808117-21kworker/0:109:10:020
83112099378377,1cyclictest837790-21kworker/4:107:20:034
83112099378377,1cyclictest0-21swapper/411:56:024
83112099378376,1cyclictest0-21swapper/409:26:024
83109499378377,1cyclictest865052-21kworker/1:009:05:031
83108799378376,1cyclictest0-21swapper/007:20:020
83112099377376,1cyclictest0-21swapper/410:14:034
83112099377376,1cyclictest0-21swapper/410:14:024
83109499377376,1cyclictest865052-21kworker/1:011:13:031
83109499377376,1cyclictest865052-21kworker/1:010:35:021
83109499377376,1cyclictest865052-21kworker/1:009:40:021
83109499377376,1cyclictest865052-21kworker/1:008:15:021
83109499377375,1cyclictest994494-21kworker/1:211:43:021
83109499377375,1cyclictest994494-21kworker/1:211:43:021
83108799377376,1cyclictest1808117-21kworker/0:109:26:020
83112099376374,1cyclictest837790-21kworker/4:108:10:024
83109499376375,1cyclictest802056-21kworker/1:207:56:031
83109499376375,1cyclictest1000502-21kworker/1:112:30:031
83109499376375,1cyclictest0-21swapper/110:30:021
83109499376375,1cyclictest0-21swapper/110:15:031
83109499376374,1cyclictest865052-21kworker/1:010:58:021
83109499376374,1cyclictest0-21swapper/112:02:021
83109499376374,1cyclictest0-21swapper/110:41:031
83108799376375,1cyclictest1808117-21kworker/0:110:14:030
83108799376375,1cyclictest1808117-21kworker/0:110:14:020
83112099375374,1cyclictest837790-21kworker/4:107:30:024
83112099375374,1cyclictest1003527-21kworker/4:012:38:034
83112099375374,1cyclictest0-21swapper/407:40:024
83112099375373,1cyclictest837790-21kworker/4:107:25:024
83109499375374,1cyclictest865052-21kworker/1:011:18:021
83109499375374,1cyclictest865052-21kworker/1:010:21:021
83109499375374,1cyclictest865052-21kworker/1:009:55:031
83109499375374,1cyclictest1000502-21kworker/1:112:36:031
83109499375373,1cyclictest865052-21kworker/1:008:46:231
83109499375373,1cyclictest865052-21kworker/1:008:32:021
83108799375374,1cyclictest0-21swapper/008:10:030
83108799375373,1cyclictest1808117-21kworker/0:107:40:030
83112899374373,1cyclictest886111-21kworker/5:108:55:025
83112099374373,1cyclictest901179-21kworker/4:009:45:034
83112099374373,1cyclictest0-21swapper/412:10:024
83112099374373,1cyclictest0-21swapper/411:20:034
83112099374373,1cyclictest0-21swapper/407:51:034
83112099374372,1cyclictest0-21swapper/411:30:024
83112099374372,1cyclictest0-21swapper/409:02:024
83109499374373,1cyclictest865052-21kworker/1:011:36:021
83109499374373,1cyclictest865052-21kworker/1:011:27:021
83109499374373,1cyclictest865052-21kworker/1:008:39:021
83109499374373,1cyclictest0-21swapper/111:33:021
83109499374373,1cyclictest0-21swapper/107:10:021
83109499374372,1cyclictest0-21swapper/111:46:021
83108799374373,1cyclictest0-21swapper/012:38:020
83108799374373,1cyclictest0-21swapper/007:30:020
83108799374371,2cyclictest1808117-21kworker/0:111:30:020
83112099373372,1cyclictest837790-21kworker/4:108:30:024
83112099373372,1cyclictest837790-21kworker/4:107:46:024
83112099373372,1cyclictest0-21swapper/411:02:024
83112099373371,1cyclictest0-21swapper/410:32:024
83109499373372,1cyclictest865052-21kworker/1:009:14:031
83109499373372,1cyclictest865052-21kworker/1:008:52:031
83109499373372,1cyclictest802056-21kworker/1:207:54:031
83109499373372,1cyclictest802056-21kworker/1:207:24:021
83109499373372,1cyclictest0-21swapper/112:16:021
83109499373372,1cyclictest0-21swapper/108:56:031
83109499373371,1cyclictest865052-21kworker/1:008:24:021
83109499373371,1cyclictest0-21swapper/108:03:021
83108799373372,1cyclictest1808117-21kworker/0:112:10:020
83108799373372,1cyclictest1808117-21kworker/0:111:20:020
83108799373372,1cyclictest1808117-21kworker/0:107:51:030
83108799373372,1cyclictest0-21swapper/009:45:020
83108799373372,1cyclictest0-21swapper/007:25:020
83108799373371,1cyclictest0-21swapper/012:20:030
83108799373371,1cyclictest0-21swapper/012:15:020
83108799373371,1cyclictest0-21swapper/008:30:020
83108799373370,2cyclictest0-21swapper/012:06:020
83112099372371,1cyclictest901179-21kworker/4:010:39:024
83112099372371,1cyclictest901179-21kworker/4:010:28:034
83112099372371,1cyclictest901179-21kworker/4:009:44:024
83112099372371,1cyclictest901179-21kworker/4:009:35:024
83112099372371,1cyclictest1003527-21kworker/4:012:20:024
83112099372371,1cyclictest1003527-21kworker/4:012:15:024
83112099372371,1cyclictest1003527-21kworker/4:012:01:034
83112099372371,1cyclictest0-21swapper/407:13:024
83112099372370,1cyclictest964371-21kworker/4:111:52:024
83112099372370,1cyclictest901179-21kworker/4:010:54:034
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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