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2025-04-02 - 08:15
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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 rack1slot8.osadl.org (updated Wed Apr 02, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1144299785727,51cyclictest0-21swapper/019:12:210
110262641618,16sleep00-21swapper/019:06:130
1144299511427,46cyclictest1139-21nscd21:30:250
1144399423359,48cyclictest31872-21processes21:30:241
111742363342,15sleep10-21swapper/119:07:441
114439912015,67cyclictest0-21swapper/121:01:591
11443999423,53cyclictest0-21swapper/121:56:591
11443999212,64cyclictest0-21swapper/123:36:591
11442998970,15cyclictest0-21swapper/021:25:000
1144399864,48cyclictest0-21swapper/119:12:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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