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2025-10-17 - 14:06
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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 Fri Oct 17, 2025 00:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28169991818,0cyclictest60250irq/125-lan22:50:022
28169991818,0cyclictest60250irq/125-lan21:48:172
28169991817,1cyclictest60250irq/125-lan19:35:162
28169991817,1cyclictest60250irq/125-lan00:05:212
28169991717,0cyclictest60250irq/125-lan23:00:182
28169991716,1cyclictest60250irq/125-lan23:40:222
28169991716,1cyclictest60250irq/125-lan23:20:182
28169991716,1cyclictest60250irq/125-lan20:50:192
28169991716,1cyclictest60250irq/125-lan00:35:172
28169991716,1cyclictest60250irq/125-lan00:10:222
28169991616,0cyclictest60250irq/125-lan23:48:062
28169991616,0cyclictest60250irq/125-lan23:25:202
28169991616,0cyclictest60250irq/125-lan23:10:122
28169991616,0cyclictest60250irq/125-lan20:40:212
28169991616,0cyclictest60250irq/125-lan19:32:282
28169991615,1cyclictest60250irq/125-lan23:55:172
28169991615,1cyclictest60250irq/125-lan23:35:152
28169991615,1cyclictest60250irq/125-lan23:15:002
28169991615,1cyclictest60250irq/125-lan21:35:182
28169991615,1cyclictest60250irq/125-lan21:05:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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