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2026-05-02 - 08:50
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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 Sat May 02, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1837199929848,52cyclictest0-21swapper/022:33:050
1837299918836,47cyclictest0-21swapper/122:33:041
1837199881791,84cyclictest0-21swapper/021:37:280
1837299852777,40cyclictest0-21swapper/121:37:281
180412767747,13sleep10-21swapper/119:07:041
181372726702,17sleep00-21swapper/019:08:000
1837199407334,52cyclictest0-21swapper/019:11:130
1837299399323,50cyclictest0-21swapper/119:11:131
1837199783,68cyclictest6846-21munin-node00:20:200
1837199743,65cyclictest13304-21ssh00:31:420
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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