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2026-05-15 - 09:58
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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 Fri May 15, 2026 00:43:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24821999445,14cyclictest0-21swapper/019:45:200
243522873852,15sleep10-21swapper/119:05:421
2482299859805,35cyclictest5962-21strings19:45:191
2482199447387,47cyclictest0-21swapper/019:10:060
2482299398340,43cyclictest0-21swapper/119:10:051
2482199386309,66cyclictest0-21swapper/020:06:000
244152282260,15sleep00-21swapper/019:06:160
248229912220,66cyclictest0-21swapper/123:02:581
248229911313,61cyclictest0-21swapper/123:34:001
2286991020,12rtkit-daemon0-21swapper/020:01:281
2286991020,12rtkit-daemon0-21swapper/020:01:271
24822999011,61cyclictest0-21swapper/123:23:591
228699870,4rtkit-daemon2285-21rtkit-daemon23:13:150
138322870,12sleep00-21swapper/022:25:120
228699820,4rtkit-daemon2285-21rtkit-daemon00:06:111
228699810,4rtkit-daemon2285-21rtkit-daemon00:24:320
228699800,5rtkit-daemon2285-21rtkit-daemon00:26:211
228699780,5rtkit-daemon2285-21rtkit-daemon00:18:161
228699780,4rtkit-daemon2285-21rtkit-daemon00:20:411
228699770,4rtkit-daemon2285-21rtkit-daemon22:05:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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