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2026-05-04 - 15:08
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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 Mon May 04, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25573991139,88cyclictest17943-21chrt11:20:130
255739911113,84cyclictest0-21swapper/007:45:120
255739910813,81cyclictest0-21swapper/010:45:130
255739910711,83cyclictest0-21swapper/010:35:120
2391521030,6chrt23917-21aten2.4_r3power11:35:281
25576991028,80cyclictest26-21ksoftirqd/110:20:121
25576999945,40cyclictest26-21ksoftirqd/109:50:141
25576999812,67cyclictest0-21swapper/109:55:151
25573999860,27cyclictest14-21ksoftirqd/011:50:130
25576999413,63cyclictest0-21swapper/108:55:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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