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2025-12-03 - 15:54
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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 Wed Dec 03, 2025 00:43:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
369836997846,30cyclictest449758-21kworker/1:123:25:121
369836997342,30cyclictest374083-21kworker/1:019:30:151
369836997142,27cyclictest364256-21kworker/1:119:15:161
369836997136,18cyclictest2197392-1kworker/1:2H00:30:141
369836996942,25cyclictest414870-21kworker/1:321:45:001
36983699690,67cyclictest0-21swapper/120:02:281
36983699690,67cyclictest0-21swapper/120:02:281
369836996739,16cyclictest2197392-1kworker/1:2H19:25:161
369836996739,15cyclictest473835-21kworker/1:000:25:181
369836996738,19cyclictest405059-21kworker/1:221:05:141
369836996640,16cyclictest2197392-1kworker/1:2H21:20:151
369836996541,23cyclictest442723-21kworker/1:022:50:151
369836996538,18cyclictest2197392-1kworker/1:2H20:10:001
369836996538,17cyclictest422988-21kworker/1:022:05:151
369836996514,34cyclictest1756130-21systemd-journal22:00:001
369836996461,2cyclictest0-21swapper/121:18:191
369836996442,21cyclictest2197392-1kworker/1:2H20:50:071
369836996342,19cyclictest431299-21kworker/1:222:25:141
369836996341,21cyclictest455704-21kworker/1:023:45:161
369836996338,17cyclictest2197392-1kworker/1:2H22:35:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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