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2026-07-15 - 18:01
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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 rackfslot7.osadl.org (updated Wed Jul 15, 2026 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
380366499165163,1cyclictest0-21swapper/011:50:120
3803670999273,19cyclictest0-21swapper/609:36:186
3803670999033,38cyclictest781ktimers/612:34:326
380367099823,59cyclictest3861163-21taskset08:51:386
3803670997315,39cyclictest3872713-21munin-run09:15:036
3803670997012,39cyclictest3944465-21gmain12:20:526
3803670997012,39cyclictest3944465-21gmain12:20:516
3803670996830,19cyclictest3850263-21chrt08:31:526
380366999679,39cyclictest0-21swapper/507:15:175
3803670996527,38cyclictest0-21swapper/610:45:456
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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