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2026-05-02 - 12:50
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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 May 02, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146478724050,8sleep01464781-21perf19:10:000
146483923960,9sleep1251rcuc/119:10:011
15907322660,22sleep013-21ksoftirqd/022:50:010
179699580,4rtkit-daemon1795-21rtkit-daemon21:25:160
179699570,5rtkit-daemon1795-21rtkit-daemon21:41:370
179699560,4rtkit-daemon1795-21rtkit-daemon00:39:400
15258982540,4sleep11525899-21proc_pri21:25:211
16296952530,4sleep10-21swapper/123:40:171
15611482530,3sleep00-21swapper/022:10:550
179699520,4rtkit-daemon1795-21rtkit-daemon20:33:270
179699520,3rtkit-daemon1795-21rtkit-daemon22:16:480
179699520,3rtkit-daemon1795-21rtkit-daemon19:30:430
179699520,3rtkit-daemon0-21swapper/019:52:500
14978512510,4sleep10-21swapper/120:30:141
179699500,4rtkit-daemon1795-21rtkit-daemon21:16:140
179699500,4rtkit-daemon1795-21rtkit-daemon21:12:290
179699500,4rtkit-daemon1795-21rtkit-daemon00:18:581
179699500,3rtkit-daemon1795-21rtkit-daemon22:36:271
179699500,3rtkit-daemon1795-21rtkit-daemon19:38:170
179699480,3rtkit-daemon0-21swapper/021:05:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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