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2025-12-19 - 15:33
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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 Dec 19, 2025 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8174112260183,60sleep00-21swapper/007:09:220
8174212258187,27sleep10-21swapper/107:09:301
9083982810,7sleep00-21swapper/010:55:190
179699760,4rtkit-daemon1795-21rtkit-daemon09:05:181
179699600,7rtkit-daemon1795-21rtkit-daemon12:20:131
179699580,4rtkit-daemon1795-21rtkit-daemon08:21:331
179699570,4rtkit-daemon1795-21rtkit-daemon08:54:551
8485812510,10sleep013-21ksoftirqd/008:25:170
179699510,3rtkit-daemon1795-21rtkit-daemon11:04:210
179699470,3rtkit-daemon1795-21rtkit-daemon11:36:451
179699380,4rtkit-daemon1795-21rtkit-daemon10:31:390
179699380,3rtkit-daemon0-21swapper/110:23:050
179699360,3rtkit-daemon0-21swapper/010:09:540
179699360,3rtkit-daemon0-21swapper/009:22:500
817602993529,4cyclictest857696-21seq08:49:510
179699350,4rtkit-daemon1795-21rtkit-daemon09:04:401
179699350,3rtkit-daemon0-21swapper/008:07:480
179699340,13rtkit-daemon13-21ksoftirqd/011:01:431
179699340,12rtkit-daemon0-21swapper/010:16:300
817607993327,4cyclictest829890-21seq07:35:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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