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2026-03-19 - 05:53
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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 rack8slot4.osadl.org (updated Thu Mar 19, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18193932244186,19sleep10-21swapper/119:09:141
18171932229170,19sleep00-21swapper/019:05:270
18171802229178,41sleep70-21swapper/719:05:187
18172322226173,42sleep30-21swapper/319:06:013
18171992218189,19sleep60-21swapper/619:05:336
18173282214186,18sleep50-21swapper/519:07:255
18172222212186,16sleep20-21swapper/219:05:532
18172152212182,19sleep40-21swapper/419:05:464
1819676993327,5cyclictest369-21systemd-journal23:30:024
181968699310,30cyclictest1909644-21sh21:55:007
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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