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2026-07-17 - 03:24
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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 Fri Jul 17, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11356991918,1cyclictest59550irq/125-lan21:10:130
11356991918,1cyclictest59550irq/125-lan20:30:210
11356991818,0cyclictest59550irq/125-lan23:27:360
11356991817,1cyclictest59550irq/125-lan21:37:230
11356991717,0cyclictest59550irq/125-lan23:15:160
11356991717,0cyclictest59550irq/125-lan21:50:130
11356991717,0cyclictest59550irq/125-lan20:00:120
11356991717,0cyclictest59550irq/125-lan00:10:250
11356991716,1cyclictest59550irq/125-lan22:45:240
11356991716,1cyclictest59550irq/125-lan22:20:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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