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2025-07-11 - 14:12
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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 (updated Fri Jul 11, 2025 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35906109911486,26cyclictest3660014-21apt-get22:45:120
35906129910595,7cyclictest3682598-21latency_hist23:55:021
35906129910392,8cyclictest3666385-21latency_hist23:05:021
35906109910189,9cyclictest3613348-21latency_hist20:20:010
35906109910189,9cyclictest3613348-21latency_hist20:20:010
3590610999772,22cyclictest3656568-21latency_hist22:35:010
3590612999689,5cyclictest3651768-21kworker/u8:1+events_unbound22:20:011
3590612999585,7cyclictest3690619-21latency_hist00:20:011
3590612999285,4cyclictest3603780-21kworker/u8:3+events_unbound20:10:171
3590612999283,6cyclictest3619964-21kworker/u8:2+events_unbound20:40:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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