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2025-12-14 - 03:20
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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 Sun Dec 14, 2025 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3836562260184,28sleep10-21swapper/119:09:481
3834802238197,26sleep00-21swapper/019:07:500
179699660,14rtkit-daemon1795-21rtkit-daemon19:49:471
38378399623,8cyclictest505136-21apt-get00:15:140
38378399612,7cyclictest512936-21apt-get00:35:130
38378399588,9cyclictest402467-21apt-get19:55:130
38378399572,6cyclictest404432-21apt-get20:00:140
179699570,3rtkit-daemon0-21swapper/023:36:080
179699570,3rtkit-daemon0-21swapper/022:20:160
179699550,3rtkit-daemon0-21swapper/021:08:140
179699550,3rtkit-daemon0-21swapper/020:51:060
3962212540,4sleep00-21swapper/019:40:120
179699530,4rtkit-daemon1795-21rtkit-daemon21:00:160
179699530,3rtkit-daemon0-21swapper/020:48:220
38378399522,9cyclictest433654-21apt-get21:15:140
179699500,4rtkit-daemon1795-21rtkit-daemon20:40:150
179699500,4rtkit-daemon1795-21rtkit-daemon00:27:050
179699500,3rtkit-daemon1795-21rtkit-daemon22:55:030
179699490,3rtkit-daemon1795-21rtkit-daemon23:05:500
179699490,3rtkit-daemon1795-21rtkit-daemon20:36:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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