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2026-05-17 - 02:14
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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 Sun May 17, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2032599883805,48cyclictest0-21swapper/119:11:201
2032499769690,51cyclictest0-21swapper/019:11:200
200082724700,16sleep00-21swapper/019:07:130
203249910714,88cyclictest0-21swapper/023:53:590
203249910113,81cyclictest0-21swapper/000:29:580
2032499996,86cyclictest0-21swapper/022:01:590
228699940,4rtkit-daemon2285-21rtkit-daemon00:14:501
228699890,15rtkit-daemon2285-21rtkit-daemon23:57:290
228699820,4rtkit-daemon2285-21rtkit-daemon00:18:451
228699810,5rtkit-daemon2285-21rtkit-daemon19:50:151
228699810,4rtkit-daemon2285-21rtkit-daemon21:42:320
228699810,4rtkit-daemon2285-21rtkit-daemon20:52:410
228699800,5rtkit-daemon2285-21rtkit-daemon20:02:250
228699790,4rtkit-daemon2285-21rtkit-daemon22:51:181
20325997914,46cyclictest0-21swapper/121:10:001
228699780,4rtkit-daemon2285-21rtkit-daemon21:20:160
20325997819,37cyclictest0-21swapper/122:45:591
228699770,5rtkit-daemon2285-21rtkit-daemon23:55:291
228699770,5rtkit-daemon2285-21rtkit-daemon21:44:221
228699760,5rtkit-daemon2285-21rtkit-daemon00:19:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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