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2026-09-20 - 00:03
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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 Sep 19, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89639918771780,69cyclictest0-21swapper/008:20:220
85482898878,13sleep10-21swapper/107:06:151
8964994882,467cyclictest2741-21strings08:20:221
896499474377,69cyclictest9167-21munin-node07:10:131
896399403317,56cyclictest0-21swapper/007:10:120
89639912611,110cyclictest0-21swapper/010:12:000
89639911414,14cyclictest0-21swapper/007:51:580
8016211086,16sleep00-21swapper/007:05:220
228699940,4rtkit-daemon2285-21rtkit-daemon11:15:561
228699930,4rtkit-daemon2285-21rtkit-daemon11:10:111
8964998614,62cyclictest0-21swapper/109:32:591
228699860,4rtkit-daemon2285-21rtkit-daemon10:08:290
228699850,4rtkit-daemon2285-21rtkit-daemon09:16:340
228699830,4rtkit-daemon2285-21rtkit-daemon08:05:080
228699820,4rtkit-daemon2285-21rtkit-daemon07:19:130
228699810,4rtkit-daemon2285-21rtkit-daemon12:36:080
228699810,4rtkit-daemon2285-21rtkit-daemon12:22:280
228699810,4rtkit-daemon2285-21rtkit-daemon12:22:280
228699810,4rtkit-daemon2285-21rtkit-daemon12:11:170
228699810,4rtkit-daemon2285-21rtkit-daemon08:13:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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