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2025-12-04 - 09:00
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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 rack1slot3.osadl.org (updated Thu Dec 04, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2023585991310,2cyclictest69450irq/121-eno122:40:123
202358599130,11cyclictest0-21swapper/321:40:013
202358599130,11cyclictest0-21swapper/319:35:133
202358599130,11cyclictest0-21swapper/319:10:123
202358599130,11cyclictest0-21swapper/300:10:153
202358599128,0cyclictest0-21swapper/323:00:133
2023585991210,1cyclictest0-21swapper/322:00:123
202358599120,8cyclictest0-21swapper/322:10:143
202358599120,1cyclictest0-21swapper/320:15:113
202358599120,1cyclictest0-21swapper/320:05:153
202358599120,1cyclictest0-21swapper/319:20:133
202358599120,11cyclictest0-21swapper/321:50:143
202358599120,11cyclictest0-21swapper/321:05:133
202358599120,11cyclictest0-21swapper/319:40:183
202358599119,1cyclictest0-21swapper/323:45:123
202358599119,1cyclictest0-21swapper/320:30:123
2023585991111,0cyclictest69450irq/121-eno122:29:213
2023585991111,0cyclictest0-21swapper/322:20:123
2023585991111,0cyclictest0-21swapper/322:20:123
2023585991110,0cyclictest69450irq/121-eno122:30:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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