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2026-05-08 - 02:34
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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 rack1slot8.osadl.org (updated Fri May 08, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1638899911844,48cyclictest0-21swapper/119:10:101
1638799800730,53cyclictest0-21swapper/019:10:100
159372724700,16sleep10-21swapper/119:05:521
1638899529462,35cyclictest0-21swapper/119:40:021
1638799422351,60cyclictest0-21swapper/019:40:010
163879910030,64cyclictest0-21swapper/023:16:000
16387999433,55cyclictest0-21swapper/023:58:590
228699910,4rtkit-daemon2285-21rtkit-daemon21:45:331
16387998714,64cyclictest0-21swapper/021:39:590
228699840,4rtkit-daemon2285-21rtkit-daemon22:53:180
228699840,4rtkit-daemon2285-21rtkit-daemon22:25:131
228699830,5rtkit-daemon2285-21rtkit-daemon00:01:501
228699830,4rtkit-daemon2285-21rtkit-daemon22:12:081
16387998336,35cyclictest0-21swapper/021:34:000
228699810,4rtkit-daemon2285-21rtkit-daemon21:01:211
228699810,4rtkit-daemon2285-21rtkit-daemon00:15:151
228699800,5rtkit-daemon2285-21rtkit-daemon21:24:511
228699800,4rtkit-daemon2285-21rtkit-daemon20:46:071
228699800,4rtkit-daemon2285-21rtkit-daemon20:30:361
228699790,4rtkit-daemon2285-21rtkit-daemon21:27:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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