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2026-07-08 - 19:12
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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 Wed Jul 08, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176799916,79cyclictest0-21swapper/012:10:130
176799916,79cyclictest0-21swapper/012:10:120
1772998914,58cyclictest0-21swapper/108:45:131
177299857,65cyclictest23605-21apt-get09:40:131
1772998514,60cyclictest0-21swapper/110:25:151
1772998513,62cyclictest0-21swapper/112:20:131
1772998415,56cyclictest0-21swapper/112:25:141
1772998414,59cyclictest0-21swapper/109:15:151
1772998414,56cyclictest0-21swapper/111:35:201
1772998413,57cyclictest0-21swapper/109:20:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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