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2025-10-31 - 03:09
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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 Oct 31, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
295243399130,1cyclictest0-21swapper/300:20:163
295243399130,11cyclictest0-21swapper/321:30:163
2952433991211,0cyclictest0-21swapper/321:55:003
295243399120,11cyclictest69450irq/121-eno120:35:183
295243399120,11cyclictest0-21swapper/323:35:013
295243399120,11cyclictest0-21swapper/319:15:153
295243399120,11cyclictest0-21swapper/319:10:123
295243399120,11cyclictest0-21swapper/300:35:163
295243399120,0cyclictest0-21swapper/322:00:123
2952433991110,0cyclictest69450irq/121-eno122:05:193
295243399110,9cyclictest0-21swapper/320:00:013
295243399110,1cyclictest0-21swapper/321:25:003
295243399110,11cyclictest0-21swapper/319:46:353
295243399110,10cyclictest69450irq/121-eno123:55:223
295243399110,10cyclictest69450irq/121-eno122:52:283
295243399110,10cyclictest69450irq/121-eno122:10:183
295243399110,10cyclictest0-21swapper/323:30:013
295243399110,10cyclictest0-21swapper/321:45:223
295243399110,10cyclictest0-21swapper/320:30:153
295243399110,0cyclictest0-21swapper/323:15:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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