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2025-09-13 - 10:09
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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 rack1slot3.osadl.org (updated Sat Sep 13, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2184763991910,1cyclictest69450irq/121-eno100:10:133
218476399148,0cyclictest69450irq/121-eno123:30:143
218476399140,11cyclictest0-21swapper/322:00:123
218476399130,12cyclictest0-21swapper/320:35:143
218476399120,11cyclictest0-21swapper/323:40:003
218476399120,11cyclictest0-21swapper/322:55:133
218476399120,11cyclictest0-21swapper/321:35:263
218476399120,11cyclictest0-21swapper/319:25:203
218476399120,10cyclictest0-21swapper/323:15:143
218476399119,1cyclictest0-21swapper/322:25:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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