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2026-08-17 - 06:39
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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 17, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12735992017,1cyclictest59550irq/125-lan20:30:140
12735991918,1cyclictest59550irq/125-lan20:26:280
12735991818,0cyclictest59550irq/125-lan21:49:280
12735991817,1cyclictest59550irq/125-lan23:05:180
12735991817,1cyclictest59550irq/125-lan22:45:120
12735991817,1cyclictest59550irq/125-lan22:30:010
12735991817,1cyclictest59550irq/125-lan21:40:010
12735991817,1cyclictest59550irq/125-lan20:15:180
12735991817,1cyclictest59550irq/125-lan19:53:420
12745991717,0cyclictest674-21snmpd21:46:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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