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2026-08-05 - 10:29
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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 Aug 05, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
188129730,23sleep10-21swapper/119:06:161
2429999274,13cyclictest26-21ksoftirqd/123:30:011
114328729,47sleep00-21swapper/019:05:230
32282820,8sleep014-21ksoftirqd/019:10:300
2429997965,9cyclictest251rcuc/121:15:291
2429997647,18cyclictest26-21ksoftirqd/121:25:111
2429997551,15cyclictest20831-21apt-get20:00:151
2429997342,21cyclictest21752-21apt-get23:05:141
2429997319,47cyclictest16038-21runrttasks00:15:391
242499726,11cyclictest0-21swapper/019:35:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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