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2026-05-22 - 02:39
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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 May 22, 2026 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32651991818,0cyclictest59550irq/125-lan19:13:200
32651991818,0cyclictest59550irq/125-lan19:13:200
32651991817,1cyclictest59550irq/125-lan23:25:220
32651991817,1cyclictest59550irq/125-lan20:10:110
32651991817,1cyclictest59550irq/125-lan19:55:130
32651991717,0cyclictest59550irq/125-lan23:40:150
32651991717,0cyclictest59550irq/125-lan21:15:130
32651991717,0cyclictest59550irq/125-lan00:35:130
32651991716,1cyclictest59550irq/125-lan23:20:210
32651991716,1cyclictest59550irq/125-lan22:45:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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