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2026-05-22 - 04:32
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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 Fri May 22, 2026 00:46:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111499499381380,1cyclictest1310066-21kworker/2:123:05:022
111499499381380,1cyclictest0-21swapper/219:40:012
111499499381379,1cyclictest1117935-21kworker/2:221:00:022
1114994993811,379cyclictest0-21swapper/222:59:012
1114994993810,380cyclictest0-21swapper/222:40:022
1114994993810,380cyclictest0-21swapper/222:27:022
1114994993810,380cyclictest0-21swapper/222:07:012
111499499380379,1cyclictest1399535-21kworker/2:019:20:022
111499499380379,1cyclictest1399535-21kworker/2:019:20:012
111499499380379,1cyclictest1117935-21kworker/2:220:50:022
111499499380379,1cyclictest1117935-21kworker/2:220:29:012
111499499380378,1cyclictest1399535-21kworker/2:019:18:012
1114994993800,379cyclictest0-21swapper/223:45:012
1114994993800,379cyclictest0-21swapper/219:52:012
1114994993800,379cyclictest0-21swapper/200:30:022
1114994993800,1cyclictest0-21swapper/222:15:012
111499499379378,1cyclictest1117935-21kworker/2:220:01:022
111499499379378,1cyclictest1117935-21kworker/2:219:55:022
111499499379377,1cyclictest1117935-21kworker/2:220:19:022
1114994993790,1cyclictest0-21swapper/222:04:012
111497799379378,1cyclictest1124843-21kworker/0:221:30:020
111499499378377,1cyclictest1399535-21kworker/2:019:33:022
111499499378376,1cyclictest1117935-21kworker/2:220:14:022
111497799378377,1cyclictest0-21swapper/021:39:010
111497799378376,1cyclictest1124843-21kworker/0:222:44:010
111497799378376,1cyclictest0-21swapper/020:03:010
111499499377376,1cyclictest1117935-21kworker/2:220:56:022
111499499377376,1cyclictest1117935-21kworker/2:220:08:022
111499499377376,1cyclictest0-21swapper/220:47:012
111499499377376,1cyclictest0-21swapper/220:43:012
111499499377376,1cyclictest0-21swapper/220:37:012
111499499377376,1cyclictest0-21swapper/219:13:022
111497799377376,1cyclictest1124843-21kworker/0:223:27:020
111497799377376,1cyclictest0-21swapper/023:42:020
111497799377376,1cyclictest0-21swapper/023:42:020
111497799377376,1cyclictest0-21swapper/021:29:020
111497799377376,1cyclictest0-21swapper/019:45:020
111497799377375,1cyclictest1124843-21kworker/0:200:35:020
111497799377375,1cyclictest0-21swapper/023:13:010
111497799377375,1cyclictest0-21swapper/000:18:020
111499499376375,1cyclictest1399535-21kworker/2:019:46:012
111499499376375,1cyclictest1117935-21kworker/2:220:34:012
111497799376375,1cyclictest1124843-21kworker/0:222:00:020
111497799376375,1cyclictest1124843-21kworker/0:221:13:020
111497799376374,1cyclictest1124843-21kworker/0:222:39:020
111497799376374,1cyclictest1124843-21kworker/0:222:33:010
111497799376374,1cyclictest0-21swapper/022:53:020
111497799376374,1cyclictest0-21swapper/021:47:010
111497799375374,1cyclictest0-21swapper/023:57:010
111497799375374,1cyclictest0-21swapper/000:28:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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