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2026-03-13 - 22:22
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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 rack0slot0.osadl.org (updated Fri Mar 13, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1017221370,4sleep199299cyclictest11:04:451
1638421150,5sleep40-21swapper/410:41:564
202272810,4sleep7103499cyclictest11:39:147
239042800,0sleep30-21swapper/312:08:033
253072770,0sleep70-21swapper/709:37:397
241872760,0sleep10-21swapper/112:36:221
305652750,0sleep30-21swapper/312:13:483
293462750,3sleep299899cyclictest10:10:532
248852750,0sleep10-21swapper/110:29:111
84192740,0sleep60-21swapper/609:30:266
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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