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2026-03-08 - 01:56
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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 Mar 08, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
295139918671798,55cyclictest0-21swapper/019:10:100
2951399937828,79cyclictest0-21swapper/019:25:210
2951399937828,79cyclictest0-21swapper/019:25:200
2951499803691,80cyclictest3444-21netstat19:25:201
2951499803691,80cyclictest3444-21netstat19:25:201
291902688666,15sleep00-21swapper/019:07:090
291942397377,13sleep10-21swapper/119:07:111
2951499346279,52cyclictest0-21swapper/119:10:101
295139912517,101cyclictest0-21swapper/020:05:010
295149910321,42cyclictest0-21swapper/120:31:591
228699960,4rtkit-daemon2285-21rtkit-daemon23:08:010
228699940,4rtkit-daemon2285-21rtkit-daemon00:06:371
228699910,4rtkit-daemon0-21swapper/023:23:510
29514998615,64cyclictest0-21swapper/121:44:591
29514998427,50cyclictest0-21swapper/121:33:591
29513998414,56cyclictest0-21swapper/021:15:590
228699820,4rtkit-daemon2285-21rtkit-daemon22:44:400
228699810,4rtkit-daemon2285-21rtkit-daemon22:57:210
228699800,4rtkit-daemon2285-21rtkit-daemon23:27:460
228699800,4rtkit-daemon2285-21rtkit-daemon22:33:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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