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2026-03-16 - 11:58
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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 rackfslot7.osadl.org (updated Mon Mar 16, 2026 00:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3425380999695,1cyclictest3502657-21munin-run21:30:024
3425380999595,0cyclictest3549222-21munin-run22:55:004
342538099835,59cyclictest3475363-21kworker/u32:0+events_unbound20:55:034
3425380998224,39cyclictest3455724-21taskset20:03:554
342538099813,59cyclictest3467171-21kworker/u32:2+events_unbound20:25:394
3425380998122,39cyclictest362-21jbd2/sda2-800:36:274
3425380997335,19cyclictest3565417-21taskset23:24:064
3425380997233,1cyclictest191rcu_preempt21:50:194
3425380997214,19cyclictest0-21swapper/419:53:514
3425380997213,40cyclictest3576608-21taskset23:44:174
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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