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2026-01-03 - 00:06
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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 Fri Jan 02, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40056502264188,27sleep10-21swapper/107:09:211
40053652256215,27sleep00-21swapper/007:06:190
400582599642,40cyclictest4076026-21apt-get09:35:100
40571132610,3sleep14057111-21tail09:10:251
41008652600,5sleep10-21swapper/110:06:131
40130862590,5sleep10-21swapper/107:25:161
400582599580,26cyclictest4055698-21date09:10:010
400582599572,40cyclictest4122105-21apt-get10:35:150
400582599571,40cyclictest4055526-21diskmemload12:11:020
400582599570,38cyclictest4164663-40apt-check11:30:080
400582599570,28cyclictest4173303-21tr11:40:240
400582599570,28cyclictest4173303-21tr11:40:230
400582599570,28cyclictest4046999-21sed08:50:010
400582599561,39cyclictest4055526-21diskmemload10:17:430
400582599561,38cyclictest4020549-21apt-get07:45:060
400582599561,37cyclictest5027-21apt-get12:15:130
400582599561,36cyclictest4087667-21apt-get09:50:130
400582599560,40cyclictest4055526-21diskmemload12:03:380
400582599560,30cyclictest4055526-21diskmemload12:35:230
400582599560,28cyclictest4091459-21apt-get09:55:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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