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2025-11-22 - 07:30
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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 20 highest latencies:
System rackcslot4.osadl.org (updated Sat Nov 22, 2025 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8831012264222,27sleep00-21swapper/019:08:590
8830862255194,47sleep10-21swapper/119:08:511
88331899593,8cyclictest950948-21apt-get21:35:160
88331899572,7cyclictest1070901-21apt-get00:25:110
88331899572,15cyclictest943880-21apt-get21:25:150
88331899553,7cyclictest936632-21apt-get21:15:150
88331899552,8cyclictest901645-21apt-get19:55:100
88331899551,7cyclictest932903-21apt-get21:10:140
883318995513,3cyclictest1050092-21sh23:54:300
88331899541,7cyclictest1075713-21ntp_states00:30:240
125899540,4rtkit-daemon1257-21rtkit-daemon22:32:131
88331899532,6cyclictest928931-21apt-get21:00:190
88331899530,8cyclictest916272-21apt-get20:30:130
125899530,4rtkit-daemon1257-21rtkit-daemon23:32:041
88331899521,13cyclictest1078301-21apt-get00:35:140
125899510,4rtkit-daemon1257-21rtkit-daemon19:38:540
125899510,4rtkit-daemon1257-21rtkit-daemon19:13:431
10364742510,5sleep00-21swapper/023:35:170
88331899501,6cyclictest1000413-21apt-get22:45:170
88331899501,6cyclictest1000413-21apt-get22:45:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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