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2026-08-23 - 11:56
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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 Sun Aug 23, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30894991919,0cyclictest59550irq/125-lan00:22:450
30894991818,0cyclictest59550irq/125-lan23:45:140
30894991818,0cyclictest59550irq/125-lan21:10:200
30894991818,0cyclictest59550irq/125-lan21:09:550
30894991817,1cyclictest59550irq/125-lan23:55:180
30894991717,0cyclictest59550irq/125-lan23:30:210
30894991717,0cyclictest59550irq/125-lan21:59:080
30894991717,0cyclictest59550irq/125-lan20:40:130
30894991717,0cyclictest59550irq/125-lan20:20:200
30894991716,1cyclictest59550irq/125-lan21:27:390
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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