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2026-05-20 - 02:42
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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 20 highest latencies:
System rack8slot7.osadl.org (updated Wed May 20, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3991991817,1cyclictest59550irq/125-lan23:00:200
3991991817,1cyclictest59550irq/125-lan19:15:140
3991991817,1cyclictest59550irq/125-lan00:00:140
3991991716,1cyclictest59550irq/125-lan23:40:060
3991991716,1cyclictest59550irq/125-lan23:13:190
3991991716,1cyclictest59550irq/125-lan22:35:140
3991991716,1cyclictest59550irq/125-lan22:20:120
3991991716,1cyclictest59550irq/125-lan20:30:150
3991991616,0cyclictest59550irq/125-lan22:58:040
3991991616,0cyclictest59550irq/125-lan21:40:190
3991991616,0cyclictest59550irq/125-lan21:31:010
3991991616,0cyclictest59550irq/125-lan19:45:190
3991991615,1cyclictest59550irq/125-lan23:05:100
3991991615,1cyclictest59550irq/125-lan22:30:200
3991991615,1cyclictest59550irq/125-lan22:05:210
3991991615,1cyclictest59550irq/125-lan21:35:130
3991991615,1cyclictest59550irq/125-lan20:45:100
3991991615,1cyclictest59550irq/125-lan20:25:140
3991991615,1cyclictest59550irq/125-lan20:20:150
3991991615,1cyclictest59550irq/125-lan20:05:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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