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2026-03-27 - 19:18
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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 Mar 27, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25939272266189,27sleep00-21swapper/007:07:260
25939382265179,28sleep10-21swapper/107:07:321
179699600,3rtkit-daemon0-21swapper/010:50:340
179699600,1rtkit-daemon1795-21rtkit-daemon09:20:150
27625932590,3sleep0161rcuc/011:59:070
179699590,3rtkit-daemon0-21swapper/010:49:240
179699560,4rtkit-daemon1795-21rtkit-daemon08:33:091
179699560,4rtkit-daemon0-21swapper/009:39:300
179699560,3rtkit-daemon1795-21rtkit-daemon09:16:591
179699560,1rtkit-daemon1795-21rtkit-daemon07:55:000
179699550,4rtkit-daemon1795-21rtkit-daemon10:18:090
179699550,3rtkit-daemon1795-21rtkit-daemon08:55:121
179699550,3rtkit-daemon0-21swapper/010:43:110
179699550,3rtkit-daemon0-21swapper/008:08:210
179699540,4rtkit-daemon1795-21rtkit-daemon11:02:230
179699540,3rtkit-daemon0-21swapper/010:38:260
179699540,3rtkit-daemon0-21swapper/007:44:380
179699520,4rtkit-daemon1795-21rtkit-daemon11:48:450
179699520,4rtkit-daemon1795-21rtkit-daemon09:01:510
179699520,3rtkit-daemon1795-21rtkit-daemon10:00:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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