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2026-05-17 - 13:55
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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 Sun May 17, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
47144323730,30sleep10-21swapper/119:05:291
4718522237194,29sleep00-21swapper/019:06:230
6109712710,3chrt0-21swapper/023:10:150
179699590,4rtkit-daemon1795-21rtkit-daemon19:15:471
179699550,3rtkit-daemon1795-21rtkit-daemon21:18:300
179699520,4rtkit-daemon1795-21rtkit-daemon21:56:150
179699520,4rtkit-daemon1795-21rtkit-daemon21:56:140
179699500,4rtkit-daemon1795-21rtkit-daemon21:07:190
179699500,4rtkit-daemon1795-21rtkit-daemon19:40:141
179699480,3rtkit-daemon1795-21rtkit-daemon23:36:231
472343994614,8cyclictest26-21ksoftirqd/121:15:011
179699400,3rtkit-daemon0-21swapper/000:14:120
47234399399,8cyclictest26-21ksoftirqd/119:35:011
47234399382,15cyclictest26-21ksoftirqd/123:15:271
47234099388,5cyclictest13-21ksoftirqd/023:50:000
179699380,3rtkit-daemon1795-21rtkit-daemon21:40:190
179699380,3rtkit-daemon0-21swapper/022:50:080
179699380,10rtkit-daemon631253-21ssh23:37:160
179699370,3rtkit-daemon0-21swapper/122:02:201
47234099360,4cyclictest13-21ksoftirqd/022:25:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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