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2026-09-20 - 08:11
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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 10 highest latencies:
System rackbslot7.osadl.org (updated Sun Sep 20, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
118579910578,18cyclictest1229-21fschecks_count00:14:150
118689910256,35cyclictest4109-21runrttasks21:37:291
118689910256,35cyclictest4109-21runrttasks21:37:291
11857999840,26cyclictest0-21swapper/021:24:490
116842987,69sleep10-21swapper/119:08:391
11876999775,16cyclictest358-21ntpd21:23:542
11857999782,9cyclictest30133-21modprobe00:08:510
11857999782,9cyclictest30133-21modprobe00:08:510
11876999464,23cyclictest18991-21diskmemload00:00:082
11876999415,39cyclictest39-21ksoftirqd/221:17:222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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