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2026-09-01 - 10:49
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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 Sep 01, 2026 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1052311997245,15cyclictest3154912-1kworker/1:1H20:15:321
105231199671,2cyclictest0-21swapper/123:40:411
1052311996342,19cyclictest1101582-21kworker/1:021:30:151
1052311996142,18cyclictest1096814-21kworker/1:221:18:461
1052311996142,17cyclictest1203424-21kworker/1:223:25:141
1052311996044,15cyclictest1052203-21kworker/1:319:50:131
1052311996043,16cyclictest1052203-21kworker/1:319:40:151
1052311996041,18cyclictest1052203-21kworker/1:319:10:171
1052311995943,15cyclictest1096814-21kworker/1:221:25:141
1052311995942,16cyclictest1244235-21kworker/1:100:00:031
1052311995942,16cyclictest1088957-21kworker/1:121:20:131
1052311995942,16cyclictest1079187-21kworker/1:020:40:141
1052311995940,18cyclictest1223825-21kworker/1:123:35:141
1052311995940,17cyclictest1223825-21kworker/1:123:45:131
105231199591,4cyclictest1064633-21latency19:45:161
105231199590,3cyclictest1194035-21kworker/1:023:05:151
1052311995843,14cyclictest1252564-21kworker/1:200:10:101
1052311995843,14cyclictest1087146-21kworker/1:021:03:201
1052311995842,15cyclictest3154912-1kworker/1:1H22:30:151
1052311995842,15cyclictest1131277-21kworker/1:221:55:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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