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2025-12-08 - 04:38
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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 Mon Dec 08, 2025 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19390392256192,49sleep00-21swapper/019:08:550
19389732256180,60sleep10-21swapper/119:08:141
204249321310,4sleep126-21ksoftirqd/122:26:091
1258991090,3rtkit-daemon1257-21rtkit-daemon22:27:260
125899750,5rtkit-daemon0-21swapper/023:36:200
19411792640,5chrt0-21swapper/019:15:010
125899620,4rtkit-daemon1257-21rtkit-daemon19:24:390
125899600,4rtkit-daemon1257-21rtkit-daemon00:00:060
125899570,4rtkit-daemon1257-21rtkit-daemon22:57:420
125899570,4rtkit-daemon1257-21rtkit-daemon21:44:100
125899540,5rtkit-daemon1979551-21munin-node20:50:120
125899530,4rtkit-daemon1257-21rtkit-daemon22:46:200
125899510,4rtkit-daemon1257-21rtkit-daemon20:32:070
125899500,4rtkit-daemon1257-21rtkit-daemon00:17:061
125899480,4rtkit-daemon1257-21rtkit-daemon21:34:200
125899470,4rtkit-daemon1257-21rtkit-daemon20:06:190
125899460,4rtkit-daemon1257-21rtkit-daemon19:52:430
125899440,4rtkit-daemon1257-21rtkit-daemon19:19:480
125899440,3rtkit-daemon0-21swapper/023:07:480
125899440,3rtkit-daemon0-21swapper/022:43:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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