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2026-09-07 - 01:50
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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 rack8slot7.osadl.org (updated Sun Sep 06, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28640992019,1cyclictest59550irq/125-lan08:00:010
28640991918,1cyclictest59550irq/125-lan12:29:450
28640991918,1cyclictest59550irq/125-lan11:20:130
28640991918,1cyclictest59550irq/125-lan11:10:150
28640991918,1cyclictest59550irq/125-lan10:45:010
28640991918,1cyclictest59550irq/125-lan10:30:200
28640991918,1cyclictest59550irq/125-lan10:25:370
28640991918,1cyclictest59550irq/125-lan10:06:530
28640991918,1cyclictest59550irq/125-lan09:47:020
28640991818,0cyclictest59550irq/125-lan12:16:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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