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2026-05-21 - 14:58
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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 20 highest latencies:
System rack8slot7.osadl.org (updated Thu May 21, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17339991918,1cyclictest59550irq/125-lan12:35:180
17339991918,1cyclictest59550irq/125-lan11:05:110
17339991918,1cyclictest59550irq/125-lan10:45:100
17339991918,1cyclictest59550irq/125-lan08:40:070
17339991817,1cyclictest59550irq/125-lan11:25:130
17339991817,1cyclictest59550irq/125-lan07:10:160
17339991816,1cyclictest59550irq/125-lan08:20:100
17339991717,0cyclictest59550irq/125-lan10:58:240
17339991717,0cyclictest59550irq/125-lan10:14:290
17339991716,1cyclictest59550irq/125-lan10:00:220
17339991716,1cyclictest59550irq/125-lan09:45:170
17339991616,0cyclictest59550irq/125-lan08:19:070
17339991616,0cyclictest59550irq/125-lan07:55:120
17339991616,0cyclictest59550irq/125-lan07:30:100
17339991615,1cyclictest59550irq/125-lan12:10:150
17339991615,1cyclictest59550irq/125-lan11:40:160
17339991615,1cyclictest59550irq/125-lan09:55:110
17339991615,1cyclictest59550irq/125-lan09:50:190
17339991615,1cyclictest59550irq/125-lan09:35:190
17339991615,1cyclictest59550irq/125-lan09:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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