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2026-03-28 - 16:20
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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 28, 2026 12:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16507022261184,28sleep10-21swapper/107:07:421
16508522258180,28sleep00-21swapper/007:09:190
179699730,5rtkit-daemon1795-21rtkit-daemon12:21:240
179699710,4rtkit-daemon1795-21rtkit-daemon11:06:060
179699620,3rtkit-daemon1795-21rtkit-daemon11:53:261
179699520,4rtkit-daemon1795-21rtkit-daemon11:40:511
179699510,4rtkit-daemon1795-21rtkit-daemon12:10:391
179699500,4rtkit-daemon1795-21rtkit-daemon10:47:041
179699500,3rtkit-daemon1795-21rtkit-daemon11:34:561
179699500,3rtkit-daemon1795-21rtkit-daemon08:21:461
179699490,3rtkit-daemon1795-21rtkit-daemon08:25:311
17693412480,2sleep01769343-21uname10:45:190
179699460,3rtkit-daemon1795-21rtkit-daemon07:24:391
18265792430,1sleep10-21swapper/112:05:211
179699410,5rtkit-daemon1670474-21irqstats07:55:191
179699410,5rtkit-daemon1670474-21irqstats07:55:191
165102699393,15cyclictest1754345-21apt-get10:25:141
179699380,3rtkit-daemon0-21swapper/112:17:461
179699380,3rtkit-daemon0-21swapper/110:27:390
179699380,3rtkit-daemon0-21swapper/110:10:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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