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2026-06-25 - 09:36
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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 rackdslot3.osadl.org (updated Thu Jun 25, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2937521680,5sleep029385-21rm19:40:540
1916321540,7sleep32733899cyclictest19:36:323
578981100,85rtkit-daemon0-21swapper/119:06:011
26708210961,15sleep00-21swapper/019:08:210
1394919168,15phc2sys0-21swapper/319:09:403
2652128865,15sleep20-21swapper/219:05:552
139391780,1ptp4l391rcuc/322:40:133
319682640,5sleep031952-21execl19:19:030
30972640,2sleep00-21swapper/019:37:490
77572630,1sleep20-21swapper/223:00:252
320282630,6sleep1231rcuc/119:19:371
89762620,5sleep32733899cyclictest19:41:153
27336996129,4cyclictest25-21ksoftirqd/119:38:251
27336996123,9cyclictest25-21ksoftirqd/119:41:041
220162610,4sleep222031-21spawn19:32:052
206362610,6sleep220458-21multi.sh19:41:302
27336996028,4cyclictest25-21ksoftirqd/123:05:171
163972570,3sleep2321ktimersoftd/223:20:152
139391570,1ptp4l391rcuc/320:00:163
319542560,5sleep22733799cyclictest19:18:522
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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