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2026-08-07 - 07:18
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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 rack1slot2.osadl.org (updated Fri Aug 07, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2845125243,0sleep30-21swapper/319:27:173
2851924936,0sleep00-21swapper/019:28:060
2832924738,0sleep20-21swapper/219:25:522
2830123525,0sleep10-21swapper/119:25:351
339960,0migration/332453-21sh00:32:133
339960,0migration/330596-21sh00:12:183
339960,0migration/329085-21sh23:53:113
339960,0migration/31588-21sh00:51:093
339960,0migration/31530-21hwlatdetect21:24:503
339960,0migration/314348-21sh22:46:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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