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2025-11-20 - 13:13
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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 Nov 20, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
237575099140,12cyclictest0-21swapper/321:35:123
2375750991211,0cyclictest69450irq/121-eno122:07:493
237575099120,11cyclictest69450irq/121-eno123:08:313
237575099120,11cyclictest69450irq/121-eno121:31:203
237575099120,11cyclictest0-21swapper/323:50:203
237575099120,11cyclictest0-21swapper/323:25:003
237575099120,11cyclictest0-21swapper/321:50:133
237575099111,9cyclictest69450irq/121-eno123:43:253
2375750991111,0cyclictest69450irq/121-eno100:10:173
2375750991111,0cyclictest0-21swapper/320:00:013
2375750991110,1cyclictest69450irq/121-eno120:18:183
237575099110,10cyclictest0-21swapper/323:15:193
237575099110,10cyclictest0-21swapper/322:20:003
237575099110,10cyclictest0-21swapper/320:05:203
237575099110,10cyclictest0-21swapper/300:35:143
237575099110,10cyclictest0-21swapper/300:30:173
237575099110,0cyclictest0-21swapper/322:32:553
237575099108,1cyclictest0-21swapper/300:00:123
2375750991010,0cyclictest0-21swapper/323:10:123
2375750991010,0cyclictest0-21swapper/322:40:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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