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2026-08-08 - 05:17
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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 Sat Aug 08, 2026 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5155332262188,59sleep10-21swapper/119:08:511
5152352261185,20sleep00-21swapper/019:05:390
51578199523,5cyclictest658955-21apt-get23:15:131
51578199520,7cyclictest673857-21munin-run23:35:001
108999520,4rtkit-daemon1088-21rtkit-daemon23:52:001
51578199512,5cyclictest696501-21apt-get00:05:111
108999510,4rtkit-daemon1088-21rtkit-daemon23:47:401
108999510,3rtkit-daemon1088-21rtkit-daemon21:13:381
51578199503,6cyclictest599074-21apt-get21:55:131
51578199502,7cyclictest655352-21apt-get23:10:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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