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2026-06-28 - 09:55
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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 Sun Jun 28, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
51813899772323,29cyclictest0-21swapper/1523:39:137
51809999736316,419cyclictest0-21swapper/600:22:3412
5180929955430,523cyclictest0-21swapper/423:32:5010
5180999950919,490cyclictest0-21swapper/622:50:5112
5181349949621,474cyclictest0-21swapper/1423:49:506
51813899484483,1cyclictest535912-21kworker/15:0+i915-unordered19:32:517
51810399483453,30cyclictest0-21swapper/722:13:5113
51812699481478,2cyclictest707299-21kworker/12:2+i915-unordered23:32:504
51810399478478,0cyclictest0-21swapper/722:07:5113
51810399478478,0cyclictest0-21swapper/722:07:5113
51813899475474,1cyclictest557009-21kworker/15:1+i915-unordered19:53:517
51810399475474,1cyclictest0-21swapper/719:32:5113
5180799947325,30cyclictest0-21swapper/121:44:131
5181219947125,30cyclictest0-21swapper/1120:41:133
5181219947122,29cyclictest0-21swapper/1120:54:143
5181069947124,29cyclictest0-21swapper/821:27:1314
5181069947121,30cyclictest0-21swapper/800:17:1214
51813499470467,2cyclictest754716-21kworker/14:0+i915-unordered23:53:506
5181219946822,29cyclictest0-21swapper/1120:12:353
5180799946617,30cyclictest0-21swapper/100:07:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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