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2026-04-15 - 12:04
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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 Apr 15, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
543132310269,27sleep10-21swapper/119:07:411
543422300257,28sleep00-21swapper/019:08:000
1088572480,4sleep10-21swapper/121:17:451
179699450,3rtkit-daemon0-21swapper/122:57:431
179699430,3rtkit-daemon0-21swapper/121:50:381
179699430,3rtkit-daemon0-21swapper/121:26:301
179699410,3rtkit-daemon0-21swapper/122:01:291
179699390,3rtkit-daemon0-21swapper/123:06:051
1730852370,25sleep00-21swapper/022:46:500
2087972350,2sleep00-21swapper/023:37:540
5466499309,14cyclictest91002-21apt-get20:40:151
5466499303,20cyclictest234448-21apt-get00:15:141
54664993027,2cyclictest66950irq/132-enp2s022:46:151
5466499300,1cyclictest0-21swapper/120:20:111
5466499296,4cyclictest141rcu_preempt22:35:111
54664992913,11cyclictest89031-21apt-get20:35:131
54664992913,10cyclictest61260-21apt-get19:25:131
54664992811,10cyclictest192054-21apt-get23:15:161
179699280,21rtkit-daemon0-21swapper/121:24:021
5466499277,3cyclictest141rcu_preempt21:10:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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