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2026-08-15 - 05:18
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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 Sat Aug 15, 2026 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22654991918,1cyclictest59550irq/125-lan20:23:090
22654991818,0cyclictest59550irq/125-lan23:32:400
22654991818,0cyclictest59550irq/125-lan21:00:160
22654991817,1cyclictest59550irq/125-lan19:55:150
22654991817,1cyclictest59550irq/125-lan00:35:120
22654991717,0cyclictest59550irq/125-lan21:21:170
22654991716,1cyclictest59550irq/125-lan23:55:180
22654991716,1cyclictest59550irq/125-lan23:15:100
22654991716,1cyclictest59550irq/125-lan22:55:190
22654991716,1cyclictest59550irq/125-lan22:35:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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