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2026-09-20 - 10:58
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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 rack7slot1.osadl.org (updated Sun Sep 20, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
485921490,1sleep226204-21stress21:33:102
485921490,1sleep226204-21stress21:33:102
3792211955,58sleep30-21swapper/319:07:183
3810211354,20sleep20-21swapper/219:07:302
3985211051,21sleep00-21swapper/019:09:290
1007221020,0sleep026204-21stress22:55:350
388029849,44sleep10-21swapper/119:08:211
312582880,2sleep026199-21stress22:30:340
140422760,1sleep314044-21grep21:55:023
71682480,1sleep126204-21stress00:04:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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