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2025-12-30 - 17:03
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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 Tue Dec 30, 2025 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2652026230,15sleep30-21swapper/307:04:513
27233215214,107sleep20-21swapper/207:06:182
2718421469,91sleep127231-21awk07:06:171
27988991253,88cyclictest19874-21ssh11:29:462
2798899994,68cyclictest14681-21apt-get09:30:052
2798899994,68cyclictest14681-21apt-get09:30:052
2797999997,79cyclictest2345-21apt-get07:29:411
211622940,7sleep30-21swapper/310:35:023
2797999934,78cyclictest14681-21apt-get09:29:431
2797999934,78cyclictest14681-21apt-get09:29:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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