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2026-05-18 - 18:01
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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 Mon May 18, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
53929917781701,39cyclictest364-21ntp_states10:35:220
539399834779,39cyclictest0-21swapper/107:11:061
539299789737,43cyclictest0-21swapper/007:11:060
539399763710,24cyclictest0-21swapper/111:16:591
539399398356,28cyclictest0-21swapper/110:35:221
51812397371,19sleep00-21swapper/007:08:110
37012127105,15sleep10-21swapper/107:05:041
669321130,4sleep16692-21sshd10:45:571
5392991125,12cyclictest23950-21ssh11:17:580
2286991100,6rtkit-daemon0-21swapper/109:52:581
5392991029,87cyclictest0-21swapper/011:29:590
5392991029,87cyclictest0-21swapper/011:29:580
228699950,10rtkit-daemon0-21swapper/112:30:461
5392999114,60cyclictest0-21swapper/008:05:000
5392999112,61cyclictest0-21swapper/009:31:590
5392999018,56cyclictest0-21swapper/009:01:590
5392999011,73cyclictest0-21swapper/012:09:590
5392998914,57cyclictest0-21swapper/007:48:590
5392998914,56cyclictest0-21swapper/009:51:000
5392998814,54cyclictest0-21swapper/011:06:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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