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2026-08-19 - 03:36
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Wed Aug 19, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9492960,6sleep00-21swapper/022:55:370
17024998612,66cyclictest0-21swapper/021:00:130
17024998314,62cyclictest0-21swapper/000:20:250
218632780,7sleep0171rcuc/023:55:280
17024997857,10cyclictest14-21ksoftirqd/022:10:150
17024997758,10cyclictest14-21ksoftirqd/022:00:150
1646327718,51sleep00-21swapper/019:06:000
1702499754,9cyclictest0-21swapper/019:50:350
17024997415,18cyclictest0-21swapper/000:15:140
17029997144,15cyclictest26-21ksoftirqd/123:25:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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