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2026-04-08 - 01:15
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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 Tue Apr 07, 2026 12:46:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
172198099381380,1cyclictest1749880-21kworker/3:208:20:023
1721980993810,380cyclictest0-21swapper/310:00:023
1721980993810,380cyclictest0-21swapper/308:57:023
1721980993810,380cyclictest0-21swapper/308:57:023
172198099380379,1cyclictest1888267-21kworker/3:012:25:013
172198099380378,1cyclictest1749880-21kworker/3:207:58:023
1721980993800,379cyclictest0-21swapper/311:36:023
1721980993800,379cyclictest0-21swapper/310:30:023
1721980993800,379cyclictest0-21swapper/309:40:023
1721980993800,379cyclictest0-21swapper/309:10:023
1721980993800,379cyclictest0-21swapper/308:50:023
1721980993800,379cyclictest0-21swapper/307:42:023
1721980993800,379cyclictest0-21swapper/307:30:013
1721980993800,1cyclictest0-21swapper/310:09:023
1721980993800,1cyclictest0-21swapper/307:50:023
172198099379378,1cyclictest1749880-21kworker/3:210:12:023
172198099379378,1cyclictest1749880-21kworker/3:209:57:023
172198099379378,1cyclictest1749880-21kworker/3:209:09:023
172198099379378,1cyclictest0-21swapper/308:37:023
1721980993790,1cyclictest0-21swapper/311:45:023
1721980993790,1cyclictest0-21swapper/311:45:023
1721980993790,1cyclictest0-21swapper/309:00:023
172198099378377,1cyclictest1849175-21kworker/3:111:21:023
172198099378377,1cyclictest1749880-21kworker/3:209:51:023
172198099378377,1cyclictest1749880-21kworker/3:209:49:023
172198099377376,1cyclictest1888267-21kworker/3:012:11:023
172198099377376,1cyclictest0-21swapper/311:57:023
172198099377376,1cyclictest0-21swapper/311:52:023
172198099377376,1cyclictest0-21swapper/310:28:023
172198099377376,1cyclictest0-21swapper/310:28:013
172198099377376,1cyclictest0-21swapper/309:39:023
172198099377376,1cyclictest0-21swapper/309:29:023
172198099376375,1cyclictest1849175-21kworker/3:111:13:013
172198099376375,1cyclictest0-21swapper/312:18:023
172198099376375,1cyclictest0-21swapper/312:06:023
172196699360359,1cyclictest1764930-21kworker/1:009:45:021
172195899360359,1cyclictest1689488-21kworker/0:008:30:020
172195899359358,1cyclictest1807030-21kworker/0:210:25:020
172195899359358,1cyclictest1807030-21kworker/0:210:25:010
172195899358357,1cyclictest1689488-21kworker/0:009:20:020
172195899358357,1cyclictest0-21swapper/011:00:010
172195899358357,1cyclictest0-21swapper/010:15:020
172195899358357,1cyclictest0-21swapper/008:25:020
172195899357356,1cyclictest1689488-21kworker/0:007:47:020
172195899357356,1cyclictest0-21swapper/012:35:020
172195899357356,1cyclictest0-21swapper/011:30:020
172195899357356,1cyclictest0-21swapper/010:05:020
172195899357356,1cyclictest0-21swapper/008:00:020
172196699356355,1cyclictest1870225-21kworker/1:111:25:021
172196699356353,2cyclictest1764930-21kworker/1:008:28:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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