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2025-12-24 - 11:46
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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 rackbslot7.osadl.org (updated Wed Dec 24, 2025 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14560214112,100sleep20-21swapper/219:09:552
146569913759,60cyclictest201-21systemd-journal21:26:090
146569912240,49cyclictest14643-21cyclictest00:00:090
146569911533,50cyclictest0-21swapper/021:10:190
146569911533,50cyclictest0-21swapper/021:10:190
146569911126,63cyclictest0-21swapper/021:35:290
146569911126,63cyclictest0-21swapper/021:35:290
146569911126,53cyclictest0-21swapper/022:05:110
14656991103,94cyclictest0-21swapper/022:45:050
14656991102,79cyclictest15340-21ssh00:33:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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