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2026-03-15 - 01:32
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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 Sat Mar 14, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23989462262184,28sleep00-21swapper/007:06:410
23988542258180,20sleep10-21swapper/107:05:421
246672921180,4sleep00-21swapper/009:35:190
179699680,4rtkit-daemon1795-21rtkit-daemon12:05:311
179699680,4rtkit-daemon1795-21rtkit-daemon08:56:451
179699610,3rtkit-daemon1795-21rtkit-daemon09:10:590
24903382590,4sleep00-21swapper/010:07:550
179699580,16rtkit-daemon0-21swapper/010:44:411
179699520,4rtkit-daemon1795-21rtkit-daemon11:13:551
179699500,3rtkit-daemon1795-21rtkit-daemon11:25:180
179699470,4rtkit-daemon1795-21rtkit-daemon08:28:061
179699450,7rtkit-daemon2487913-21apt-get10:05:131
179699420,3rtkit-daemon1795-21rtkit-daemon12:29:500
179699370,3rtkit-daemon0-21swapper/108:01:551
239935399363,3cyclictest141rcu_preempt09:50:020
179699360,4rtkit-daemon0-21swapper/109:52:550
179699360,3rtkit-daemon0-21swapper/108:12:221
179699350,4rtkit-daemon1795-21rtkit-daemon11:06:580
179699350,3rtkit-daemon0-21swapper/112:13:451
179699350,3rtkit-daemon0-21swapper/012:02:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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