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2026-05-21 - 10:44
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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 rack3slot6.osadl.org (updated Thu May 21, 2026 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2790529319,27sleep00-21swapper/019:08:320
2762329331,18sleep10-21swapper/119:05:301
220682880,6sleep122071-21grep23:20:351
28231997852,18cyclictest31806-21apt-get22:20:140
28231997634,30cyclictest14-21ksoftirqd/000:29:490
28231997354,12cyclictest14-21ksoftirqd/000:05:120
28234997031,15cyclictest26-21ksoftirqd/122:45:001
2823199695,55cyclictest2641-21apt-get00:00:130
123442690,6chrt0-21swapper/122:55:261
28231996826,15cyclictest14-21ksoftirqd/019:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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