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2026-06-12 - 10:52
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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 rackdslot4.osadl.org (updated Fri Jun 12, 2026 00:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591205171,23phc2sys0-21swapper/319:09:163
102562203170,22sleep00-21swapper/019:09:130
101402203170,22sleep10-21swapper/119:07:431
100782203171,21sleep20-21swapper/219:06:582
1031728262,11sleep30-21swapper/319:10:023
138491660,1ptp4l401ktimersoftd/321:45:173
67562590,8sleep0101ktimersoftd/020:05:210
138491440,0ptp4l401ktimersoftd/322:12:583
138491430,0ptp4l401ktimersoftd/323:32:423
10613994338,3cyclictest41-21ksoftirqd/321:40:003
10613994236,3cyclictest41-21ksoftirqd/322:39:593
10613994236,3cyclictest41-21ksoftirqd/300:05:013
50798410,23rtkit-daemon8234-21apt-get00:30:111
138491410,0ptp4l401ktimersoftd/320:58:133
138491410,0ptp4l401ktimersoftd/320:25:483
138491400,0ptp4l401ktimersoftd/320:35:173
50798390,10rtkit-daemon0-21swapper/321:57:003
138491390,15ptp4l401ktimersoftd/321:10:283
10612993929,6cyclictest33-21ksoftirqd/221:00:112
138491380,0ptp4l401ktimersoftd/320:00:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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