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2026-07-21 - 18:29
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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 rackcslot4.osadl.org (updated Tue Jul 21, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21904242261221,26sleep00-21swapper/007:09:340
21886942259189,25sleep10-21swapper/107:05:061
106799880,4rtkit-daemon1066-21rtkit-daemon10:28:411
2190580997167,3cyclictest2200735-21kworker/u8:208:37:190
23606192530,1sleep12360618-21awk11:40:241
219058799522,6cyclictest2391602-21apt-get12:20:131
219058799513,7cyclictest2387238-21apt-get12:15:141
219058799512,8cyclictest2205159-21apt-get07:45:151
2190587995110,5cyclictest2240048-21diskmemload11:08:501
219058799502,5cyclictest2248556-21apt-get09:20:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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