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2026-08-24 - 13:29
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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 Mon Aug 24, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12839991919,0cyclictest59550irq/125-lan23:32:510
12839991918,1cyclictest59550irq/125-lan23:49:560
12839991918,1cyclictest59550irq/125-lan23:41:030
12839991918,1cyclictest59550irq/125-lan22:40:000
12839991918,1cyclictest59550irq/125-lan00:31:410
12839991918,1cyclictest59550irq/125-lan00:10:000
12839991917,1cyclictest59550irq/125-lan23:37:250
12839991917,1cyclictest59550irq/125-lan23:10:170
12839991917,1cyclictest59550irq/125-lan23:06:090
12839991917,1cyclictest59550irq/125-lan22:47:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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