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2026-04-25 - 16:08
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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 10 highest latencies:
System rackeslot3.osadl.org (updated Sat Apr 25, 2026 12:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1308915997344,28cyclictest1320347-21kworker/1:207:45:181
1308915997340,31cyclictest1513832-21kworker/1:112:35:161
1308915997340,31cyclictest1307309-21kworker/1:007:15:121
1308915997143,27cyclictest1355674-21kworker/1:309:25:011
1308915997140,30cyclictest1332689-21kworker/1:008:25:151
1308915997043,26cyclictest1310545-21kworker/1:107:20:171
1308915997038,30cyclictest1314742-1kworker/1:2H07:25:141
1308915997037,31cyclictest1451964-21kworker/1:211:20:191
1308915996941,27cyclictest1464877-21kworker/1:211:35:151
1308915996941,27cyclictest1314742-1kworker/1:2H09:00:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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