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2025-11-12 - 06:58
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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 20 highest latencies:
System rack8slot7.osadl.org (updated Wed Nov 12, 2025 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12942991817,1cyclictest60250irq/125-lan22:40:152
12942991717,0cyclictest60250irq/125-lan23:55:152
12942991717,0cyclictest60250irq/125-lan00:15:162
12942991716,1cyclictest60250irq/125-lan23:05:172
12942991716,1cyclictest60250irq/125-lan21:55:152
12942991716,1cyclictest60250irq/125-lan21:50:132
12942991716,1cyclictest60250irq/125-lan21:25:162
12942991716,1cyclictest60250irq/125-lan21:15:142
12942991716,1cyclictest60250irq/125-lan21:10:202
12942991716,1cyclictest60250irq/125-lan20:40:232
12942991716,1cyclictest60250irq/125-lan19:50:112
12942991716,1cyclictest60250irq/125-lan00:30:192
12942991616,0cyclictest60250irq/125-lan22:45:222
12942991616,0cyclictest60250irq/125-lan20:25:132
12942991616,0cyclictest60250irq/125-lan20:15:212
12942991615,1cyclictest60250irq/125-lan23:00:222
12942991615,1cyclictest60250irq/125-lan22:35:152
12942991615,1cyclictest60250irq/125-lan22:30:122
12942991615,1cyclictest60250irq/125-lan22:20:152
12942991615,1cyclictest60250irq/125-lan21:38:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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