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2026-07-18 - 11:03
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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 rack3slot6.osadl.org (updated Sat Jul 18, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
128172990,6chrt12345-21apt-get20:25:150
18048999577,11cyclictest14-21ksoftirqd/020:40:150
18048999262,16cyclictest0-21swapper/023:10:140
1755729029,48sleep10-21swapper/119:06:391
1755729029,48sleep10-21swapper/119:06:391
18048998713,67cyclictest0-21swapper/020:20:120
18048998568,11cyclictest14-21ksoftirqd/000:25:110
18048998568,11cyclictest14-21ksoftirqd/000:25:110
18048998566,11cyclictest14-21ksoftirqd/022:55:150
18048998256,13cyclictest0-21swapper/021:45:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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