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2025-11-15 - 00:15
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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 Fri Nov 14, 2025 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23277412283219,48sleep10-21swapper/107:06:241
23277522272192,28sleep00-21swapper/007:06:320
248458721550,3sleep10-21swapper/111:26:251
125899800,4rtkit-daemon1257-21rtkit-daemon09:53:130
125899760,4rtkit-daemon1257-21rtkit-daemon12:32:221
232822299592,38cyclictest2398302-21apt-get09:35:131
125899580,4rtkit-daemon1257-21rtkit-daemon07:12:371
232822299570,24cyclictest2505380-21python311:55:021
23568692560,4sleep00-21swapper/008:15:340
125899560,3rtkit-daemon1257-21rtkit-daemon09:31:210
125899550,4rtkit-daemon1257-21rtkit-daemon10:25:571
232822299540,1cyclictest2377906-21diskmemload12:00:581
125899540,5rtkit-daemon1257-21rtkit-daemon07:29:591
125899530,4rtkit-daemon1257-21rtkit-daemon08:49:151
232822299522,33cyclictest2386801-21apt-get09:20:141
232822299521,36cyclictest2508250-21ssh11:57:191
125899520,4rtkit-daemon1257-21rtkit-daemon10:56:121
232822299516,30cyclictest2377906-21diskmemload09:13:301
2328222995114,25cyclictest2487679-21rt-features11:30:281
2328222995112,19cyclictest2385594-21sh09:18:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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