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2026-05-23 - 09:22
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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 Sat May 23, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
46622721699,15sleep00-21swapper/019:09:190
30762566548,11sleep10-21swapper/119:05:051
476899496420,50cyclictest0-21swapper/019:22:280
476999408330,46cyclictest0-21swapper/119:22:281
47699910683,17cyclictest0-21swapper/123:28:591
47689910513,86cyclictest0-21swapper/021:33:000
4768991038,90cyclictest0-21swapper/022:25:590
4768998740,41cyclictest0-21swapper/021:59:590
4769998614,55cyclictest0-21swapper/119:58:591
4769998514,57cyclictest0-21swapper/120:29:001
4769998514,57cyclictest0-21swapper/120:29:001
228699830,4rtkit-daemon2285-21rtkit-daemon22:41:511
228699810,4rtkit-daemon2285-21rtkit-daemon23:23:570
228699810,4rtkit-daemon2285-21rtkit-daemon22:01:011
228699800,4rtkit-daemon2285-21rtkit-daemon23:31:231
4768997924,42cyclictest0-21swapper/021:10:590
228699790,5rtkit-daemon2285-21rtkit-daemon22:00:011
228699790,4rtkit-daemon2285-21rtkit-daemon22:14:411
4768997811,50cyclictest0-21swapper/020:02:590
4768997620,38cyclictest0-21swapper/023:59:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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