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2025-08-21 - 22:08
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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 Thu Aug 21, 2025 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2123352312271,27sleep00-21swapper/007:09:050
2121792278211,52sleep10-21swapper/107:07:251
125899640,5rtkit-daemon289501-21ssh09:45:210
125899630,4rtkit-daemon1257-21rtkit-daemon10:01:161
125899610,5rtkit-daemon245491-21apt-get08:30:110
125899610,4rtkit-daemon1257-21rtkit-daemon12:30:150
125899600,4rtkit-daemon1257-21rtkit-daemon10:06:241
125899590,4rtkit-daemon1257-21rtkit-daemon11:08:040
125899590,4rtkit-daemon1257-21rtkit-daemon08:55:061
125899570,3rtkit-daemon0-21swapper/009:52:080
125899560,4rtkit-daemon394061-21ssh12:07:520
125899550,3rtkit-daemon0-21swapper/012:37:150
3296832540,11sleep013-21ksoftirqd/010:40:000
125899540,4rtkit-daemon1257-21rtkit-daemon11:37:440
125899540,4rtkit-daemon1257-21rtkit-daemon10:59:390
125899540,3rtkit-daemon0-21swapper/010:45:480
125899540,22rtkit-daemon262069-21diskmemload11:59:010
125899530,4rtkit-daemon1257-21rtkit-daemon07:45:090
125899530,4rtkit-daemon1257-21rtkit-daemon07:27:120
125899530,3rtkit-daemon0-21swapper/011:23:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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