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2025-11-24 - 04:05
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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 Mon Nov 24, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2345638991311,1cyclictest0-21swapper/321:30:123
234563899120,1cyclictest0-21swapper/320:25:133
234563899120,11cyclictest69450irq/121-eno123:45:163
234563899120,11cyclictest0-21swapper/322:15:013
234563899120,11cyclictest0-21swapper/319:45:143
234563899120,11cyclictest0-21swapper/319:25:143
2345638991111,0cyclictest69450irq/121-eno122:20:143
2345638991111,0cyclictest0-21swapper/323:10:013
2345638991111,0cyclictest0-21swapper/321:44:563
2345638991111,0cyclictest0-21swapper/300:35:133
2345638991110,1cyclictest69450irq/121-eno121:10:123
2345638991110,1cyclictest0-21swapper/322:45:113
2345638991110,0cyclictest0-21swapper/319:50:133
2345638991110,0cyclictest0-21swapper/300:20:013
234563899110,8cyclictest0-21swapper/322:55:193
234563899110,10cyclictest69450irq/121-eno123:05:153
234563899110,10cyclictest69450irq/121-eno122:31:013
234563899110,10cyclictest69450irq/121-eno122:02:573
234563899110,10cyclictest0-21swapper/300:05:223
234563899110,0cyclictest0-21swapper/323:20:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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