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2026-03-11 - 06:14
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack1slot8.osadl.org (updated Wed Mar 11, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
286379918301740,83cyclictest0-21swapper/020:35:450
2863799911834,54cyclictest0-21swapper/019:11:290
282302826805,14sleep10-21swapper/119:06:181
2863899819739,48cyclictest0-21swapper/119:11:281
284342633609,15sleep00-21swapper/019:08:200
2863899450406,30cyclictest0-21swapper/120:35:451
286379910217,78cyclictest0-21swapper/021:58:580
28637999779,12cyclictest0-21swapper/022:05:000
228699960,4rtkit-daemon2285-21rtkit-daemon23:33:071
28637999413,67cyclictest0-21swapper/023:59:590
28637999218,67cyclictest0-21swapper/022:07:580
228699910,4rtkit-daemon2285-21rtkit-daemon21:33:391
228699880,4rtkit-daemon2285-21rtkit-daemon22:46:550
228699870,3rtkit-daemon2285-21rtkit-daemon22:39:451
228699860,4rtkit-daemon2285-21rtkit-daemon22:25:101
228699850,4rtkit-daemon2285-21rtkit-daemon22:13:261
228699850,4rtkit-daemon2285-21rtkit-daemon22:13:251
228699830,4rtkit-daemon2285-21rtkit-daemon23:50:481
228699830,4rtkit-daemon2285-21rtkit-daemon23:50:471
228699830,4rtkit-daemon2285-21rtkit-daemon20:03:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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