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2026-07-21 - 06:14
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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 Tue Jul 21, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
321272920900,13sleep10-21swapper/119:08:081
323122584561,16sleep00-21swapper/019:09:590
32349995664,11cyclictest0-21swapper/019:13:210
3235099501413,66cyclictest0-21swapper/119:13:211
2286991240,12rtkit-daemon0-21swapper/019:16:480
228699950,10rtkit-daemon0-21swapper/022:48:460
228699940,10rtkit-daemon0-21swapper/000:07:570
32350999115,62cyclictest0-21swapper/123:22:001
32350998321,42cyclictest0-21swapper/100:34:591
32350998321,42cyclictest0-21swapper/100:34:591
32350998110,54cyclictest0-21swapper/123:38:001
228699800,3rtkit-daemon2285-21rtkit-daemon23:55:571
32349997820,51cyclictest0-21swapper/021:21:500
228699780,6rtkit-daemon2285-21rtkit-daemon21:28:251
228699780,4rtkit-daemon2285-21rtkit-daemon22:10:450
228699770,4rtkit-daemon2285-21rtkit-daemon21:55:251
228699760,5rtkit-daemon2285-21rtkit-daemon20:15:331
228699760,4rtkit-daemon2285-21rtkit-daemon22:40:210
228699750,4rtkit-daemon2285-21rtkit-daemon21:11:240
228699740,5rtkit-daemon2285-21rtkit-daemon23:13:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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