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2025-12-04 - 19:51
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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 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
416765699149,1cyclictest0-21swapper/308:20:133
4167656991311,1cyclictest0-21swapper/311:35:133
416765699130,12cyclictest0-21swapper/310:55:143
416765699130,11cyclictest0-21swapper/312:35:143
416765699129,1cyclictest0-21swapper/308:50:143
416765699120,1cyclictest0-21swapper/309:45:013
416765699120,11cyclictest0-21swapper/310:40:013
416765699120,11cyclictest0-21swapper/309:50:143
416765699120,11cyclictest0-21swapper/309:05:013
416765699120,10cyclictest0-21swapper/310:00:103
4167656991111,0cyclictest69450irq/121-eno110:15:193
4167656991111,0cyclictest0-21swapper/312:05:133
4167656991111,0cyclictest0-21swapper/311:25:003
4167656991110,0cyclictest0-21swapper/311:30:143
416765699110,10cyclictest69450irq/121-eno111:50:113
416765699110,10cyclictest69450irq/121-eno111:47:403
416765699110,10cyclictest69450irq/121-eno108:15:143
416765699110,10cyclictest0-21swapper/310:20:203
416765699110,0cyclictest0-21swapper/311:25:133
416765699110,0cyclictest0-21swapper/311:15:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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