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2025-12-24 - 05:09
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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 10 highest latencies:
System rack3slot6.osadl.org (updated Wed Dec 24, 2025 00:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
99579911111,85cyclictest0-21swapper/021:05:150
99619911014,34cyclictest0-21swapper/123:30:131
99579910932,34cyclictest0-21swapper/019:55:130
99579910812,81cyclictest0-21swapper/023:20:120
99579910776,21cyclictest14-21ksoftirqd/019:50:170
99579910712,83cyclictest0-21swapper/020:00:150
99579910673,23cyclictest14-21ksoftirqd/020:30:160
99579910612,80cyclictest0-21swapper/023:55:140
99579910611,82cyclictest0-21swapper/020:45:130
9957991054,44cyclictest14-21ksoftirqd/000:00:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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