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2026-09-06 - 11:45
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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 rackdslot2.osadl.org (updated Sun Sep 06, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
234402237170,22sleep20-21swapper/219:09:152
139591236169,22phc2sys0-21swapper/319:08:313
232502204171,21sleep10-21swapper/119:06:531
213612204170,22sleep00-21swapper/019:05:030
110121710,5sleep32379599cyclictest21:45:013
3049321510,6sleep32379599cyclictest20:30:153
261392710,4sleep226076-21irqrtprio20:20:192
139291700,1ptp4l391rcuc/323:27:523
64742670,6sleep22379499cyclictest23:00:262
2379599575,10cyclictest2521-21gnome-shell23:10:263
39442550,2sleep10-21swapper/122:55:231
316782550,2sleep20-21swapper/223:55:142
2379599545,16cyclictest29373-21/usr/sbin/munin21:35:163
2379599535,15cyclictest7560-21ls21:55:273
2379499530,51cyclictest13204-21kworker/2:000:30:242
139291530,1ptp4l391rcuc/320:17:403
23793995116,3cyclictest25-21ksoftirqd/123:05:261
2379399500,3cyclictest3464-21latency_hist21:50:011
223732500,4sleep30-21swapper/323:35:173
23795994941,5cyclictest15593-21ls22:15:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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