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2026-08-26 - 13:58
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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 Wed Aug 26, 2026 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16888992019,1cyclictest59550irq/125-lan23:22:150
16888992019,1cyclictest59550irq/125-lan00:30:000
16888991918,1cyclictest59550irq/125-lan23:52:400
16888991918,1cyclictest59550irq/125-lan23:06:410
16888991918,1cyclictest59550irq/125-lan22:50:510
16888991918,1cyclictest59550irq/125-lan22:30:380
16888991918,1cyclictest59550irq/125-lan22:10:170
16888991918,1cyclictest59550irq/125-lan21:50:180
16888991918,1cyclictest59550irq/125-lan21:30:170
16888991918,1cyclictest59550irq/125-lan19:30:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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