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2025-11-26 - 02:58
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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 Tue Nov 25, 2025 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35836642263190,28sleep00-21swapper/007:07:410
35835712237195,28sleep10-21swapper/107:06:411
125899670,6rtkit-daemon3779974-40apt-check12:25:280
125899620,5rtkit-daemon1257-21rtkit-daemon11:20:140
37253502590,5sleep00-21swapper/011:10:190
125899580,3rtkit-daemon0-21swapper/008:04:250
358399799563,8cyclictest3694619-21apt-get10:30:151
125899560,3rtkit-daemon0-21swapper/010:10:520
125899560,3rtkit-daemon0-21swapper/009:10:450
125899550,5rtkit-daemon1257-21rtkit-daemon09:06:320
125899550,4rtkit-daemon3674868-21ssh10:03:460
125899550,3rtkit-daemon0-21swapper/011:38:010
125899550,3rtkit-daemon0-21swapper/011:17:450
125899550,3rtkit-daemon0-21swapper/011:06:450
125899550,3rtkit-daemon0-21swapper/010:57:100
358399799543,8cyclictest3754349-21apt-get11:50:131
358399799542,10cyclictest3746931-21apt-get11:40:141
125899540,3rtkit-daemon0-21swapper/012:36:480
125899540,3rtkit-daemon0-21swapper/009:29:220
125899540,3rtkit-daemon0-21swapper/008:31:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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