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2026-08-02 - 10:22
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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 Sun Aug 02, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
101189918461747,92cyclictest0-21swapper/019:10:210
99872974953,13sleep10-21swapper/119:09:021
1011899896823,46cyclictest0-21swapper/021:27:500
1011999819744,43cyclictest0-21swapper/121:27:501
10119994712,5cyclictest10937-21strings19:10:211
10118999169,17cyclictest0-21swapper/023:43:590
1011899848,70cyclictest0-21swapper/021:15:590
10118998314,63cyclictest0-21swapper/021:57:590
10118998224,53cyclictest0-21swapper/000:19:590
10118998014,61cyclictest0-21swapper/019:24:590
10118998014,61cyclictest0-21swapper/019:24:590
10119997918,37cyclictest0-21swapper/100:03:591
10119997914,42cyclictest0-21swapper/120:19:591
1011899796,55cyclictest0-21swapper/019:35:010
10118997812,61cyclictest0-21swapper/023:46:000
10118997715,56cyclictest0-21swapper/022:46:590
228699750,4rtkit-daemon2285-21rtkit-daemon21:05:310
10119997517,38cyclictest0-21swapper/122:37:001
10118997533,35cyclictest0-21swapper/020:20:280
228699740,5rtkit-daemon2285-21rtkit-daemon22:23:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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