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2026-05-12 - 22:43
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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 Tue May 12, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1401991918,1cyclictest59550irq/125-lan10:00:000
1401991918,1cyclictest59550irq/125-lan08:10:200
1401991817,1cyclictest59550irq/125-lan12:35:140
1401991817,1cyclictest59550irq/125-lan09:45:120
1401991717,0cyclictest59550irq/125-lan11:27:540
1401991717,0cyclictest59550irq/125-lan11:02:120
1401991717,0cyclictest59550irq/125-lan10:40:220
1401991717,0cyclictest59550irq/125-lan07:57:050
1401991716,1cyclictest59550irq/125-lan12:30:120
1401991616,0cyclictest59550irq/125-lan07:40:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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