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2026-04-25 - 04:23
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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 Apr 25, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15477995404,12cyclictest0-21swapper/119:11:381
151962506483,16sleep00-21swapper/019:07:350
1547699429352,70cyclictest0-21swapper/019:11:390
150152415393,16sleep10-21swapper/119:05:431
154779910317,68cyclictest0-21swapper/121:02:591
15477999617,62cyclictest0-21swapper/120:13:591
15476999414,75cyclictest0-21swapper/020:25:010
15476999312,76cyclictest0-21swapper/023:00:590
15476998712,68cyclictest0-21swapper/023:34:590
15476998459,19cyclictest0-21swapper/022:26:590
15476998319,58cyclictest0-21swapper/020:32:010
228699820,4rtkit-daemon2285-21rtkit-daemon23:59:001
15476998118,34cyclictest0-21swapper/000:35:590
228699800,4rtkit-daemon2285-21rtkit-daemon00:16:301
295832790,3sleep129582-21ssh22:11:121
61072770,4sleep06106-21cat23:25:250
228699770,4rtkit-daemon2285-21rtkit-daemon20:24:461
15476997626,38cyclictest0-21swapper/000:21:580
228699750,5rtkit-daemon2285-21rtkit-daemon00:31:061
228699750,5rtkit-daemon2285-21rtkit-daemon00:23:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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