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2025-11-21 - 04:40
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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 Fri Nov 21, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
238462499130,12cyclictest2518728-21taskset00:35:013
238462499130,12cyclictest0-21swapper/323:15:123
238462499129,1cyclictest0-21swapper/319:10:133
238462499129,1cyclictest0-21swapper/300:15:153
2384624991211,0cyclictest0-21swapper/321:35:013
238462499121,0cyclictest0-21swapper/323:25:123
238462499120,1cyclictest0-21swapper/300:00:143
238462499120,11cyclictest69450irq/121-eno122:55:213
238462499120,11cyclictest0-21swapper/321:45:203
238462499120,11cyclictest0-21swapper/321:25:123
238462499120,11cyclictest0-21swapper/321:20:143
238462499120,11cyclictest0-21swapper/321:10:013
238462499120,11cyclictest0-21swapper/320:55:183
238462499120,11cyclictest0-21swapper/320:45:153
238462499120,11cyclictest0-21swapper/320:25:193
238462499120,11cyclictest0-21swapper/320:05:123
238462499120,11cyclictest0-21swapper/300:00:003
238462499110,10cyclictest69450irq/121-eno123:10:203
238462499110,10cyclictest69450irq/121-eno122:50:033
238462499110,10cyclictest69450irq/121-eno100:20:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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