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2026-04-04 - 07:42
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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 Sat Apr 04, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1459499830750,51cyclictest0-21swapper/019:10:050
1459599790711,48cyclictest0-21swapper/119:10:061
1459499434342,66cyclictest0-21swapper/019:25:130
1459599385291,63cyclictest0-21swapper/119:25:131
145532185161,16sleep00-21swapper/019:09:580
145959911325,75cyclictest0-21swapper/122:58:001
261542990,13sleep00-21swapper/021:10:150
228699990,11rtkit-daemon0-21swapper/020:51:430
228699970,11rtkit-daemon0-21swapper/021:07:390
228699950,10rtkit-daemon0-21swapper/022:49:410
228699950,10rtkit-daemon0-21swapper/022:27:410
228699920,16rtkit-daemon2285-21rtkit-daemon23:44:020
228699910,11rtkit-daemon0-21swapper/021:57:200
228699860,5rtkit-daemon2285-21rtkit-daemon21:30:490
228699860,14rtkit-daemon0-21swapper/023:27:520
14595998314,52cyclictest0-21swapper/123:21:581
228699810,4rtkit-daemon2285-21rtkit-daemon00:36:481
14594998061,14cyclictest0-21swapper/023:16:000
228699780,4rtkit-daemon2285-21rtkit-daemon00:20:270
228699770,4rtkit-daemon2285-21rtkit-daemon22:33:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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