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2026-04-08 - 12:07
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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 rackeslot5.osadl.org (updated Wed Apr 08, 2026 00:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3738993128,2cyclictest307-21systemd-journal21:25:010
3750993027,2cyclictest12999-21ls19:30:013
3738993027,2cyclictest9183-21sh20:30:010
375099290,28cyclictest31849-21apt-get23:35:123
374699290,28cyclictest7033-21apt-get23:50:122
374699290,28cyclictest3861-21apt-get22:35:122
374199290,28cyclictest17987-21munin-run19:40:011
374199290,28cyclictest0-21swapper/121:50:101
374199290,28cyclictest0-21swapper/120:35:111
3750992828,0cyclictest0-21swapper/322:00:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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