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2026-06-10 - 00:16
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot3.osadl.org (updated Tue Jun 09, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1085849997035,34cyclictest1085713-21kworker/1:107:15:141
1085849996346,16cyclictest1229835-21kworker/1:211:30:151
1085849996346,16cyclictest1229835-21kworker/1:211:30:141
1085849996259,2cyclictest0-21swapper/108:15:311
1085849995944,14cyclictest3011357-1kworker/1:1H09:35:211
1085849995944,14cyclictest1117667-21kworker/1:008:50:001
108584999590,2cyclictest0-21swapper/107:14:341
1085849995840,17cyclictest1244493-21kworker/1:311:45:011
1085849995840,17cyclictest1136322-21kworker/1:109:25:141
1085849995839,17cyclictest1125515-21kworker/1:009:15:141
1085849995838,19cyclictest1117667-21kworker/1:008:50:141
1085849995742,14cyclictest1156783-21kworker/1:009:57:351
1085849995742,14cyclictest1156783-21kworker/1:009:57:341
1085849995741,15cyclictest3011357-1kworker/1:1H11:00:131
1085849995741,15cyclictest1285058-21kworker/1:112:29:581
1085849995741,15cyclictest1112783-21kworker/1:309:00:131
1085849995740,16cyclictest1184040-21kworker/1:310:25:131
1085849995735,20cyclictest3011357-1kworker/1:1H09:44:591
1085849995728,28cyclictest1184040-21kworker/1:310:35:471
1085854995650,4cyclictest3159930-1kworker/2:1H12:00:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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