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2025-11-28 - 09:18
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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 rack1slot1.osadl.org (updated Fri Nov 28, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
295742209177,21sleep30-21swapper/319:09:133
293792203149,21sleep10-21swapper/119:06:411
293182201163,24sleep20-21swapper/219:05:552
294992200138,50sleep00-21swapper/019:08:140
29708991411,1cyclictest9-21ksoftirqd/019:50:000
197922140,0sleep30-21swapper/321:00:213
2970999130,12cyclictest0-21swapper/119:50:171
29717991210,1cyclictest28-21ksoftirqd/222:39:592
29717991210,1cyclictest28-21ksoftirqd/222:25:002
29718991110,1cyclictest35-21ksoftirqd/320:25:013
29718991110,1cyclictest35-21ksoftirqd/320:09:593
29718991110,1cyclictest35-21ksoftirqd/300:09:593
2971799119,1cyclictest28-21ksoftirqd/222:00:012
2971799119,1cyclictest28-21ksoftirqd/221:15:002
29717991110,1cyclictest28-21ksoftirqd/222:55:162
2971799110,0cyclictest0-21swapper/200:24:402
2971899109,1cyclictest35-21ksoftirqd/320:19:593
29718991010,0cyclictest0-21swapper/323:38:113
29718991010,0cyclictest0-21swapper/323:38:103
2971899100,8cyclictest3140-21apt-get19:20:153
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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