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2025-11-18 - 09:34
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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 Tue Nov 18, 2025 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8915991818,0cyclictest60250irq/125-lan00:18:182
8915991817,1cyclictest60250irq/125-lan23:30:122
8915991817,1cyclictest60250irq/125-lan22:20:132
8915991817,1cyclictest60250irq/125-lan20:15:002
8915991817,1cyclictest60250irq/125-lan20:00:212
8915991817,1cyclictest60250irq/125-lan00:35:242
8915991717,0cyclictest60250irq/125-lan19:25:172
8915991717,0cyclictest60250irq/125-lan19:20:152
8915991716,1cyclictest60250irq/125-lan22:10:132
8915991716,1cyclictest60250irq/125-lan21:00:152
8915991716,1cyclictest60250irq/125-lan19:15:112
8915991716,1cyclictest60250irq/125-lan00:00:152
8915991616,0cyclictest60250irq/125-lan23:55:172
8915991616,0cyclictest60250irq/125-lan22:02:262
8915991616,0cyclictest60250irq/125-lan21:53:402
8915991616,0cyclictest60250irq/125-lan21:35:222
8915991616,0cyclictest60250irq/125-lan20:20:172
8915991615,1cyclictest60250irq/125-lan23:50:172
8915991615,1cyclictest60250irq/125-lan23:11:542
8915991615,1cyclictest60250irq/125-lan23:01:542
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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