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2025-09-18 - 01:20
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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 10 highest latencies:
System rackeslot8.osadl.org (updated Wed Sep 17, 2025 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
241002921020,1sleep20-21swapper/208:35:242
274516221010,1sleep00-21swapper/012:13:070
24953352860,1sleep20-21swapper/209:38:322
27167552360,9chrt0-21swapper/011:55:190
25825822350,1chrt0-21swapper/210:30:352
27674122310,1chrt0-21swapper/112:25:171
2297284992824,3cyclictest2361372-21idleruntime-cro08:00:002
2297279992723,2cyclictest2608752-21munin-plugin-st10:50:010
2297279992619,6cyclictest2624870-21idleruntime-cro11:00:000
27830532240,2sleep12782887-21ssh12:35:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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