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2026-04-05 - 05:43
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Sun Apr 05, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8816482267189,29sleep10-21swapper/119:09:341
8812772267192,42sleep00-21swapper/019:05:350
88185099612,41cyclictest1008934-21apt-get23:00:131
88184599603,37cyclictest959923-21apt-get21:50:130
88185099592,38cyclictest937969-21apt-get21:20:131
88185099592,33cyclictest998382-21apt-get22:45:151
88185099589,29cyclictest882294-21taskset19:10:161
88185099582,38cyclictest980873-21apt-get22:20:121
88184599580,5cyclictest1012324-21apt-get23:05:150
88185099572,38cyclictest970443-21apt-get22:05:121
88185099570,4cyclictest974259-21fschecks_count22:10:151
88185099570,40cyclictest941071-21apt-get21:25:061
88185099561,36cyclictest984447-21apt-get22:25:121
88185099558,28cyclictest1003725-21seq22:52:081
88185099540,3cyclictest918169-21chrt20:40:031
88185099540,2cyclictest1032281-21chrt23:33:271
88184599542,33cyclictest945388-21apt-get21:30:150
88184599542,32cyclictest952511-21apt-get21:40:120
88185099534,28cyclictest850-21runrttasks23:05:261
88185099531,2cyclictest930233-21diskmemload21:16:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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