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2026-05-23 - 02:46
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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 Sat May 23, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30457994545,0cyclictest17552-21lspci21:12:203
30444991918,1cyclictest59550irq/125-lan00:35:110
30444991818,0cyclictest59550irq/125-lan22:50:150
30444991818,0cyclictest59550irq/125-lan00:30:200
30444991717,0cyclictest59550irq/125-lan20:15:070
30444991717,0cyclictest59550irq/125-lan00:00:170
30444991716,1cyclictest59550irq/125-lan21:10:110
30444991716,1cyclictest59550irq/125-lan19:55:190
30444991616,0cyclictest59550irq/125-lan23:00:110
30444991616,0cyclictest59550irq/125-lan21:30:160
30444991616,0cyclictest59550irq/125-lan21:30:160
30444991616,0cyclictest59550irq/125-lan21:27:070
30444991616,0cyclictest59550irq/125-lan21:00:170
30444991616,0cyclictest59550irq/125-lan20:10:140
30444991615,1cyclictest59550irq/125-lan23:35:140
30444991615,1cyclictest59550irq/125-lan23:25:110
30444991615,1cyclictest59550irq/125-lan23:10:130
30444991615,1cyclictest59550irq/125-lan22:15:140
30444991615,1cyclictest59550irq/125-lan00:24:550
30444991515,0cyclictest59550irq/125-lan23:05:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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