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2026-07-09 - 20:52
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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 Thu Jul 09, 2026 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21449991817,1cyclictest59550irq/125-lan10:50:130
21449991817,1cyclictest59550irq/125-lan09:15:190
21449991817,1cyclictest59550irq/125-lan08:05:180
21449991717,0cyclictest59550irq/125-lan11:45:160
21449991717,0cyclictest59550irq/125-lan11:35:160
21449991717,0cyclictest59550irq/125-lan11:00:300
21449991716,1cyclictest59550irq/125-lan11:05:140
21449991716,1cyclictest59550irq/125-lan10:05:200
21449991716,1cyclictest59550irq/125-lan08:50:210
21449991716,1cyclictest59550irq/125-lan08:10:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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