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2025-12-06 - 10:10
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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 Dec 06, 2025 00:44:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
382900823800,9sleep10-21swapper/119:05:151
38305142271190,27sleep00-21swapper/019:08:000
125899610,5rtkit-daemon1257-21rtkit-daemon22:47:230
125899560,5rtkit-daemon1257-21rtkit-daemon22:22:521
125899560,3rtkit-daemon0-21swapper/022:40:231
125899550,4rtkit-daemon1257-21rtkit-daemon00:10:120
125899540,4rtkit-daemon1257-21rtkit-daemon00:00:581
125899520,4rtkit-daemon1257-21rtkit-daemon19:13:201
125899510,4rtkit-daemon1257-21rtkit-daemon23:30:310
125899510,4rtkit-daemon1257-21rtkit-daemon22:56:450
125899510,4rtkit-daemon1257-21rtkit-daemon22:39:350
125899510,4rtkit-daemon1257-21rtkit-daemon20:50:471
125899470,3rtkit-daemon0-21swapper/019:25:250
125899450,7rtkit-daemon3851640-21apt-get20:00:131
125899410,3rtkit-daemon0-21swapper/123:03:461
39001352390,10chrt13-21ksoftirqd/021:37:090
125899390,4rtkit-daemon3855542-21apt-get20:10:171
125899370,6rtkit-daemon3912335-21apt-get21:55:120
125899370,4rtkit-daemon1257-21rtkit-daemon22:25:521
125899370,4rtkit-daemon1257-21rtkit-daemon22:11:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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