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2026-06-06 - 08:04
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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 Jun 06, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
249319919205,1897cyclictest0-21swapper/021:25:210
248032927902,16sleep00-21swapper/019:09:050
246162565543,15sleep10-21swapper/119:07:131
2493199553471,75cyclictest0-21swapper/019:10:230
2493299453405,27cyclictest25912-21processes19:10:231
2493299430363,55cyclictest13178-21strings21:25:211
249319910181,15cyclictest0-21swapper/021:36:590
24932999112,60cyclictest0-21swapper/119:18:591
24932998710,63cyclictest0-21swapper/119:51:591
228699820,5rtkit-daemon2285-21rtkit-daemon00:27:441
24931998013,62cyclictest0-21swapper/021:54:000
24932997711,49cyclictest0-21swapper/123:54:591
24931997715,55cyclictest0-21swapper/022:39:590
24931997656,14cyclictest0-21swapper/022:07:000
24931997618,52cyclictest88850irq/46-eth0-tx-00:32:450
24931997520,42cyclictest88850irq/46-eth0-tx-22:47:580
228699750,5rtkit-daemon2285-21rtkit-daemon21:09:311
228699750,5rtkit-daemon2285-21rtkit-daemon21:09:311
228699750,4rtkit-daemon2285-21rtkit-daemon21:15:310
24932997316,42cyclictest0-21swapper/100:39:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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