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2026-03-13 - 15:46
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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 rack0slot2.osadl.org (updated Fri Mar 13, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1060021050,1sleep710602-21cut09:04:157
2601932950,1sleep7260194-21grep10:49:147
2865992650,1sleep7286602-21cut10:59:167
4504862640,1sleep50-21swapper/512:09:105
396208026435,8sleep40-21swapper/407:00:344
3962610995957,2cyclictest229630-21kworker/u16:1+events_unbound10:59:245
2094302570,0sleep7209432-21sed10:29:107
3962610995047,2cyclictest268317-21kworker/u16:3+events_unbound11:39:125
396210024939,7sleep60-21swapper/607:00:526
3962610994745,2cyclictest229630-21kworker/u16:1+events_unbound12:14:245
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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