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2026-04-15 - 23:42
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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 Wed Apr 15, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86592806783,14sleep10-21swapper/107:06:091
9081995373,517cyclictest15233-21memory07:25:181
908099523432,69cyclictest0-21swapper/007:10:020
908199473380,61cyclictest0-21swapper/107:10:031
86782225202,15sleep00-21swapper/007:06:200
2286991090,4rtkit-daemon2285-21rtkit-daemon09:33:341
228699880,7rtkit-daemon0-21swapper/011:57:220
228699840,3rtkit-daemon30265-21ssh09:26:040
228699820,5rtkit-daemon2285-21rtkit-daemon10:50:260
228699820,5rtkit-daemon2285-21rtkit-daemon09:21:091
228699810,4rtkit-daemon2285-21rtkit-daemon07:27:120
9080998063,12cyclictest0-21swapper/011:48:590
228699760,5rtkit-daemon2285-21rtkit-daemon08:40:281
228699760,4rtkit-daemon2285-21rtkit-daemon10:48:011
228699750,4rtkit-daemon2285-21rtkit-daemon10:00:051
228699750,16rtkit-daemon0-21swapper/010:17:051
228699740,4rtkit-daemon2285-21rtkit-daemon11:39:410
228699740,4rtkit-daemon2285-21rtkit-daemon08:00:281
228699740,3rtkit-daemon2285-21rtkit-daemon11:44:271
228699740,3rtkit-daemon2285-21rtkit-daemon10:24:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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