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2025-12-07 - 09:52
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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 Dec 07, 2025 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28670542276221,40sleep00-21swapper/019:06:320
28665802255180,20sleep10-21swapper/119:05:311
29417992810,1chrt2941798-21unin-run21:45:011
2867518995617,21cyclictest2887977-21apt-get20:00:060
2867518995519,12cyclictest2998748-21apt-get23:05:130
30554292540,6sleep0161rcuc/000:25:100
30210122530,13sleep013-21ksoftirqd/023:35:190
2867521995312,23cyclictest3006701-21apt-get23:15:171
2867518995318,11cyclictest2916325-21diskmemload23:13:440
2867518995317,9cyclictest1-21systemd20:30:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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