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2026-04-27 - 18:39
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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 rack0slot5.osadl.org (updated Mon Apr 27, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2496189954935,513cyclictest0-21swapper/222:35:468
249662995402,536cyclictest0-21swapper/1322:25:465
249662995402,536cyclictest0-21swapper/1322:25:465
24962899530529,1cyclictest395185-21kworker/5:2+i915-unordered22:25:4611
24962899530529,1cyclictest395185-21kworker/5:2+i915-unordered22:25:4611
249621995170,516cyclictest0-21swapper/323:32:469
2496329951012,498cyclictest79-21ksoftirqd/622:39:4612
2496289951022,487cyclictest0-21swapper/519:29:4611
24964899485483,2cyclictest403956-21kworker/10:2+i915-unordered22:35:462
2496109948222,459cyclictest16-21ksoftirqd/019:52:460
24966699480480,0cyclictest419260-21kworker/14:1+i915-unordered22:39:466
2496109948022,457cyclictest0-21swapper/019:37:460
2496109948022,457cyclictest0-21swapper/019:37:460
2496109947617,458cyclictest0-21swapper/023:32:460
2496189947427,30cyclictest0-21swapper/221:41:468
2496109947023,28cyclictest0-21swapper/022:09:080
2496559946811,60cyclictest0-21swapper/1123:29:083
2496109946718,58cyclictest0-21swapper/000:25:310
2496249946621,29cyclictest61-21ksoftirqd/421:46:4610
2496109946521,30cyclictest0-21swapper/021:34:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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