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2026-04-22 - 02:32
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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 Wed Apr 22, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3451991918,1cyclictest59550irq/125-lan00:15:110
3451991818,0cyclictest59550irq/125-lan23:25:060
3451991817,1cyclictest59550irq/125-lan22:55:040
3451991817,1cyclictest59550irq/125-lan22:40:220
3451991817,1cyclictest59550irq/125-lan21:25:120
3451991717,0cyclictest59550irq/125-lan19:50:180
3451991716,1cyclictest59550irq/125-lan23:20:160
3451991716,1cyclictest59550irq/125-lan22:05:130
3451991716,1cyclictest59550irq/125-lan21:30:120
3451991716,1cyclictest59550irq/125-lan21:14:590
3451991716,1cyclictest59550irq/125-lan19:40:200
3451991716,1cyclictest59550irq/125-lan00:05:140
3451991716,1cyclictest59550irq/125-lan00:00:210
3451991616,0cyclictest59550irq/125-lan22:25:160
3451991615,1cyclictest59550irq/125-lan23:05:130
3451991615,1cyclictest59550irq/125-lan21:00:170
3451991615,1cyclictest59550irq/125-lan20:50:160
3451991615,1cyclictest59550irq/125-lan20:15:150
3451991615,1cyclictest59550irq/125-lan19:55:210
3451991615,1cyclictest59550irq/125-lan19:35:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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