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2026-05-04 - 21:29
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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 May 04, 2026 12:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2415099330,32cyclictest325-21hwrng08:34:371
24144991817,1cyclictest59550irq/125-lan12:30:150
24144991817,1cyclictest59550irq/125-lan12:05:000
24144991817,1cyclictest59550irq/125-lan10:35:150
24144991717,0cyclictest59550irq/125-lan11:40:170
24144991717,0cyclictest59550irq/125-lan11:05:180
24144991717,0cyclictest59550irq/125-lan07:21:210
24144991716,1cyclictest59550irq/125-lan10:55:170
24144991716,1cyclictest59550irq/125-lan10:20:160
24144991716,1cyclictest59550irq/125-lan09:50:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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