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2026-07-29 - 05:07
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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
Characteristics of the 10 highest latencies:
System rackcslot4.osadl.org (updated Wed Jul 29, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18851032263221,27sleep10-21swapper/119:08:501
18851652259184,59sleep00-21swapper/019:09:330
20894262670,4sleep12089425-21unixbench_singl00:35:241
19352242670,5sleep02179444-21tfileserver21:10:350
19106862590,7sleep00-21swapper/020:10:200
106799590,4rtkit-daemon1066-21rtkit-daemon23:52:131
1885372995513,24cyclictest1995808-21apt-get22:30:141
106799530,11rtkit-daemon1066-21rtkit-daemon23:17:141
106799520,4rtkit-daemon1066-21rtkit-daemon19:45:200
106799500,4rtkit-daemon1066-21rtkit-daemon23:02:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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