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2026-06-24 - 05:55
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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 Wed Jun 24, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37699102260186,52sleep10-21swapper/119:09:031
37696392255214,27sleep00-21swapper/019:06:080
179699600,4rtkit-daemon0-21swapper/121:33:251
377014699594,8cyclictest3928024-21apt-get23:40:120
179699510,4rtkit-daemon1795-21rtkit-daemon00:37:290
179699500,4rtkit-daemon1795-21rtkit-daemon19:37:180
179699500,3rtkit-daemon1795-21rtkit-daemon23:07:171
179699500,3rtkit-daemon1795-21rtkit-daemon20:53:351
179699490,4rtkit-daemon1795-21rtkit-daemon23:21:181
179699460,4rtkit-daemon1795-21rtkit-daemon23:31:431
179699430,6rtkit-daemon1795-21rtkit-daemon22:45:111
179699420,4rtkit-daemon1795-21rtkit-daemon22:13:101
377014699413,12cyclictest3808822-21apt-get20:45:140
377014699404,9cyclictest3913709-21apt-get23:20:140
377014699402,14cyclictest3777137-21apt-get19:25:150
377014699393,9cyclictest3849139-21apt-get21:50:130
377014699383,9cyclictest3877945-21apt-get22:30:150
377014699373,9cyclictest3806877-21apt-get20:40:130
377014699373,8cyclictest3920911-21apt-get23:30:120
179699370,3rtkit-daemon1795-21rtkit-daemon23:38:071
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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