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2025-12-12 - 08:52
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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 Fri Dec 12, 2025 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21715212010,88sleep00-21swapper/019:03:290
230319911649,22cyclictest23008-21cyclictest23:04:102
230319911649,22cyclictest23008-21cyclictest23:04:102
2264221066,16sleep20-21swapper/219:04:582
230199910342,12cyclictest0-21swapper/122:14:291
230199910238,19cyclictest31677-21modprobe19:33:041
230199910216,34cyclictest26403-21date23:53:071
230199910216,34cyclictest26403-21date23:53:071
230199910172,20cyclictest9344-21latency_hist20:03:081
230199910133,18cyclictest0-21swapper/123:58:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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