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2025-12-06 - 13:30
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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 Sat Dec 06, 2025 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8700991918,1cyclictest60250irq/125-lan21:35:012
8700991918,1cyclictest60250irq/125-lan00:20:132
8700991817,1cyclictest60250irq/125-lan22:59:412
8700991817,1cyclictest60250irq/125-lan00:25:162
8700991817,1cyclictest60250irq/125-lan00:06:412
8700991717,0cyclictest60250irq/125-lan23:40:142
8700991717,0cyclictest60250irq/125-lan21:05:562
8700991717,0cyclictest60250irq/125-lan20:40:192
8700991716,1cyclictest60250irq/125-lan23:35:132
8700991716,1cyclictest60250irq/125-lan23:30:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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