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2026-05-20 - 19:47
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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 Wed May 20, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
88802890871,12sleep10-21swapper/107:08:041
910999788724,28cyclictest26708-21ssh09:20:190
911099698675,8cyclictest26701-21strings09:20:191
89252670648,15sleep00-21swapper/007:08:270
910999522448,49cyclictest0-21swapper/007:10:440
911099484412,51cyclictest0-21swapper/107:10:441
2286991300,5rtkit-daemon2285-21rtkit-daemon09:26:530
2849221210,4sleep128493-21sh12:17:351
1338721080,12sleep041ktimersoftd/008:50:160
587421040,4sleep05872-21netstat09:40:210
228699950,11rtkit-daemon0-21swapper/011:54:460
228699950,10rtkit-daemon0-21swapper/012:25:020
228699940,10rtkit-daemon0-21swapper/010:43:200
228699940,10rtkit-daemon0-21swapper/010:28:340
228699940,10rtkit-daemon0-21swapper/009:52:390
228699870,11rtkit-daemon0-21swapper/010:07:141
9109998158,18cyclictest0-21swapper/007:18:000
910999783,8cyclictest29387-21ssh10:23:090
9109997658,13cyclictest0-21swapper/012:24:590
910999764,45cyclictest814-21ssh09:31:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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