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2026-04-22 - 03:40
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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 22, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2292599914850,57cyclictest0-21swapper/019:10:010
2292699882807,44cyclictest0-21swapper/119:19:531
2292599830758,47cyclictest0-21swapper/019:19:530
224462643620,15sleep10-21swapper/119:05:321
2292599965,18cyclictest0-21swapper/022:13:010
22925999472,16cyclictest0-21swapper/023:07:590
22925998813,69cyclictest0-21swapper/021:35:590
228699880,17rtkit-daemon2285-21rtkit-daemon23:51:341
141422880,3sleep014141-21munin-node21:30:230
2292699825,25cyclictest0-21swapper/123:17:521
2292699825,25cyclictest0-21swapper/123:17:521
2292699796,29cyclictest0-21swapper/122:45:141
2292699786,28cyclictest0-21swapper/122:20:001
2292699786,26cyclictest0-21swapper/120:18:591
22926997813,22cyclictest0-21swapper/122:56:091
2292699776,29cyclictest0-21swapper/100:02:031
2292699775,17cyclictest0-21swapper/120:10:011
22926997715,15cyclictest0-21swapper/121:36:441
22926997710,27cyclictest0-21swapper/121:29:001
2292699766,28cyclictest0-21swapper/100:11:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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