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2025-12-07 - 21:47
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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 Sun Dec 07, 2025 12:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
411978999137,5cyclictest0-21swapper/309:45:143
411978999135,6cyclictest0-21swapper/307:15:133
411978999130,12cyclictest0-21swapper/308:05:123
411978999130,11cyclictest0-21swapper/310:00:133
411978999130,11cyclictest0-21swapper/309:00:123
411978999130,11cyclictest0-21swapper/308:25:163
4119789991211,1cyclictest0-21swapper/307:35:133
4119789991211,0cyclictest0-21swapper/307:55:143
411978999120,1cyclictest0-21swapper/309:55:133
411978999120,11cyclictest0-21swapper/310:35:203
411978999120,11cyclictest0-21swapper/308:20:003
411978999120,11cyclictest0-21swapper/307:25:013
4119789991111,0cyclictest69450irq/121-eno112:25:173
4119789991111,0cyclictest69450irq/121-eno111:07:113
4119789991111,0cyclictest69450irq/121-eno110:53:533
4119789991111,0cyclictest0-21swapper/310:50:023
4119789991111,0cyclictest0-21swapper/309:50:133
4119789991111,0cyclictest0-21swapper/308:20:013
411978999110,10cyclictest69450irq/121-eno111:46:403
411978999110,10cyclictest69450irq/121-eno109:35:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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