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2026-04-24 - 20:53
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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
Characteristics of the 10 highest latencies:
System rack3slot0.osadl.org (updated Fri Apr 24, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65719912119,70cyclictest18915-21grepconf.sh09:55:411
147982850,1sleep5721-21dbus-daemon11:31:055
134592830,1sleep513460-21bash10:16:005
6607997336,34cyclictest0-21swapper/609:55:416
656499710,70cyclictest25363-21kworker/0:509:55:400
661199650,64cyclictest4239-21kworker/7:009:55:417
19752640,2sleep5660099cyclictest11:19:115
246282560,0sleep70-21swapper/709:31:417
12792540,1sleep61-21systemd11:43:316
214912510,0sleep60-21swapper/609:37:096
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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