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2026-09-12 - 16:13
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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
Characteristics of the 10 highest latencies:
System rackdslot1.osadl.org (updated Sat Sep 12, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491730,3ptp4l0-21swapper/309:55:133
2653699711,23cyclictest212-21systemd-journal10:30:190
134491710,4ptp4l26535-21cyclictest07:20:273
9792690,6sleep30-21swapper/312:00:203
2653699681,23cyclictest3169-21sed08:35:300
2653699671,23cyclictest7137-21grep08:45:220
2653699661,29cyclictest3687-21taskset09:47:010
2653699661,28cyclictest15356-21taskset09:05:090
2653699660,25cyclictest13769-21taskset11:18:090
26537996532,4cyclictest25-21ksoftirqd/107:25:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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