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2026-04-11 - 11:17
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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 rack3slot6.osadl.org (updated Sat Apr 11, 2026 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
698629337,39sleep00-21swapper/019:05:160
698629337,39sleep00-21swapper/019:05:160
8629998615,16cyclictest0-21swapper/019:25:120
8629998045,19cyclictest14-21ksoftirqd/019:35:230
8629998040,35cyclictest3857-21ntp_states21:55:390
8629997413,17cyclictest0-21swapper/020:25:110
8629997240,27cyclictest20839-21http22:45:010
8629997234,22cyclictest14-21ksoftirqd/022:45:100
8629997214,15cyclictest0-21swapper/023:15:120
8629997115,14cyclictest0-21swapper/023:50:120
805227129,31sleep10-21swapper/119:05:471
805227129,31sleep10-21swapper/119:05:471
8633997055,9cyclictest26-21ksoftirqd/120:20:171
8629997014,51cyclictest0-21swapper/019:20:100
8633996948,8cyclictest503-21snmpd21:59:371
8629996948,13cyclictest0-21swapper/023:25:130
8629996846,13cyclictest0-21swapper/022:15:140
8629996813,49cyclictest0-21swapper/020:20:120
8633996734,26cyclictest26-21ksoftirqd/120:30:331
8633996731,17cyclictest26-21ksoftirqd/122:17:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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