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2025-09-16 - 07:28
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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 Tue Sep 16, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
217714999130,1cyclictest0-21swapper/322:35:153
217714999130,11cyclictest0-21swapper/320:20:123
2177149991211,0cyclictest0-21swapper/321:55:173
217714999120,1cyclictest0-21swapper/322:50:013
217714999120,11cyclictest0-21swapper/321:05:013
217714999120,11cyclictest0-21swapper/320:45:143
217714999111,9cyclictest69450irq/121-eno123:00:163
2177149991111,0cyclictest69450irq/121-eno123:05:143
2177149991111,0cyclictest69450irq/121-eno119:45:013
2177149991111,0cyclictest0-21swapper/321:40:143
2177149991110,0cyclictest0-21swapper/323:35:133
2177149991110,0cyclictest0-21swapper/322:50:023
2177149991110,0cyclictest0-21swapper/321:25:133
2177149991110,0cyclictest0-21swapper/319:30:133
217714999110,11cyclictest0-21swapper/321:10:133
217714999110,10cyclictest69450irq/121-eno123:40:223
217714999110,10cyclictest69450irq/121-eno122:03:223
217714999110,10cyclictest0-21swapper/323:20:133
217714999110,10cyclictest0-21swapper/319:50:013
217714999110,10cyclictest0-21swapper/319:25:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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