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2026-07-20 - 10:11
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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 20 highest latencies:
System rack8slot7.osadl.org (updated Mon Jul 20, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20699991918,1cyclictest59550irq/125-lan21:53:570
20699991818,0cyclictest59550irq/125-lan23:53:590
20699991817,1cyclictest59550irq/125-lan22:55:160
20699991717,0cyclictest59550irq/125-lan22:05:180
20699991717,0cyclictest59550irq/125-lan00:35:160
20699991716,1cyclictest59550irq/125-lan23:45:220
20699991716,1cyclictest59550irq/125-lan20:15:120
20699991716,1cyclictest59550irq/125-lan00:13:400
20699991716,1cyclictest59550irq/125-lan00:00:150
20699991616,0cyclictest59550irq/125-lan23:20:150
20699991616,0cyclictest59550irq/125-lan23:05:140
20699991616,0cyclictest59550irq/125-lan22:25:120
20699991616,0cyclictest59550irq/125-lan21:49:590
20699991616,0cyclictest59550irq/125-lan21:10:130
20699991615,1cyclictest59550irq/125-lan23:55:120
20699991615,1cyclictest59550irq/125-lan21:40:110
20699991615,1cyclictest59550irq/125-lan21:05:170
20699991615,1cyclictest59550irq/125-lan21:00:150
20699991615,1cyclictest59550irq/125-lan20:45:100
20699991615,1cyclictest59550irq/125-lan20:30:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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