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2026-07-26 - 10:27
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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 Sun Jul 26, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3518812266226,26sleep00-21swapper/019:09:020
3516242258190,52sleep10-21swapper/119:06:171
4038272750,4sleep00-21swapper/021:13:290
4189352690,4sleep013-21ksoftirqd/021:33:210
35207299631,34cyclictest435738-21apt-get21:55:260
35207299622,31cyclictest412486-21apt-get21:25:110
35207299612,32cyclictest477184-21apt-get22:50:150
106799610,3rtkit-daemon1066-21rtkit-daemon00:13:151
3908472600,4sleep1251rcuc/120:45:001
35207299593,36cyclictest443218-21apt-get22:05:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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