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2026-04-13 - 13:25
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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 Apr 13, 2026 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
602499320,31cyclictest325-21hwrng23:38:060
6039991918,1cyclictest59550irq/125-lan23:45:213
6039991918,1cyclictest59550irq/125-lan19:55:153
6039991817,1cyclictest59550irq/125-lan23:37:533
6039991817,1cyclictest59550irq/125-lan21:00:133
6039991817,1cyclictest59550irq/125-lan20:55:183
6039991816,1cyclictest59550irq/125-lan23:40:133
6039991717,0cyclictest59550irq/125-lan22:15:153
6039991716,1cyclictest59550irq/125-lan23:50:123
6039991716,1cyclictest59550irq/125-lan23:25:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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