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2026-05-30 - 12:17
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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 May 30, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
198449919351863,65cyclictest0-21swapper/021:18:370
1984499467402,57cyclictest0-21swapper/019:10:120
196672443422,13sleep10-21swapper/119:08:331
1984599431399,17cyclictest3839-21taskset21:18:371
1984599419351,50cyclictest0-21swapper/119:10:121
19845991204,69cyclictest23177-21ssh21:51:591
198459911329,48cyclictest0-21swapper/123:15:591
316642980,12sleep00-21swapper/021:10:200
1984599989,70cyclictest0-21swapper/123:14:581
19845998810,53cyclictest0-21swapper/123:57:591
228699800,4rtkit-daemon2285-21rtkit-daemon23:45:261
228699790,5rtkit-daemon2285-21rtkit-daemon21:55:081
19845997817,37cyclictest0-21swapper/122:07:001
228699770,4rtkit-daemon2285-21rtkit-daemon22:05:140
228699760,4rtkit-daemon2285-21rtkit-daemon00:15:371
228699750,5rtkit-daemon2285-21rtkit-daemon22:20:531
228699740,4rtkit-daemon2285-21rtkit-daemon23:20:551
228699740,4rtkit-daemon2285-21rtkit-daemon22:12:531
228699740,4rtkit-daemon2285-21rtkit-daemon21:37:230
228699740,4rtkit-daemon2285-21rtkit-daemon00:02:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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