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2026-03-10 - 22:11
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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 Mar 10, 2026 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24752991818,0cyclictest59550irq/125-lan12:39:381
24752991818,0cyclictest59550irq/125-lan10:58:331
24752991817,1cyclictest59550irq/125-lan12:00:191
24752991817,1cyclictest59550irq/125-lan11:45:151
24752991817,1cyclictest59550irq/125-lan10:25:171
24752991817,1cyclictest59550irq/125-lan10:16:021
24752991817,1cyclictest59550irq/125-lan07:50:101
24752991717,0cyclictest59550irq/125-lan09:40:181
24752991717,0cyclictest59550irq/125-lan08:48:331
24752991716,1cyclictest59550irq/125-lan12:15:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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