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2026-05-20 - 06:10
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Wed May 20, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19541422326277,35sleep10-21swapper/119:07:511
19540882294252,28sleep00-21swapper/019:07:140
195471421580,7sleep01954601-21/usr/sbin/munin19:10:170
20621872680,3sleep10-21swapper/122:26:031
20012402590,5sleep00-21swapper/021:05:000
179699580,3rtkit-daemon1795-21rtkit-daemon19:45:131
179699540,3rtkit-daemon1795-21rtkit-daemon20:40:111
179699540,3rtkit-daemon0-21swapper/123:55:151
179699540,3rtkit-daemon0-21swapper/121:10:351
179699540,3rtkit-daemon0-21swapper/121:10:351
179699530,4rtkit-daemon1795-21rtkit-daemon23:39:531
179699530,4rtkit-daemon1795-21rtkit-daemon20:16:501
179699530,3rtkit-daemon0-21swapper/123:26:461
179699530,3rtkit-daemon0-21swapper/121:33:471
21023992520,2sleep10-21swapper/123:20:201
179699520,4rtkit-daemon1795-21rtkit-daemon23:45:061
179699520,4rtkit-daemon1795-21rtkit-daemon23:44:161
179699520,3rtkit-daemon0-21swapper/122:14:261
179699520,3rtkit-daemon0-21swapper/121:35:081
179699520,3rtkit-daemon0-21swapper/121:24:521
179699520,3rtkit-daemon0-21swapper/121:18:061
179699520,3rtkit-daemon0-21swapper/120:58:361
179699520,3rtkit-daemon0-21swapper/119:58:011
179699510,4rtkit-daemon1795-21rtkit-daemon22:44:211
179699510,4rtkit-daemon1795-21rtkit-daemon00:28:181
179699510,3rtkit-daemon1795-21rtkit-daemon22:55:361
179699510,3rtkit-daemon0-21swapper/100:37:581
179699500,4rtkit-daemon1795-21rtkit-daemon22:23:141
179699500,3rtkit-daemon0-21swapper/120:02:031
179699490,5rtkit-daemon1795-21rtkit-daemon22:30:101
179699490,4rtkit-daemon1795-21rtkit-daemon20:22:051
179699490,4rtkit-daemon1795-21rtkit-daemon19:13:181
179699490,4rtkit-daemon1795-21rtkit-daemon00:15:361
179699490,3rtkit-daemon1795-21rtkit-daemon22:19:561
19713852480,27sleep11971389-21latency19:50:201
179699480,4rtkit-daemon1795-21rtkit-daemon21:47:141
179699480,4rtkit-daemon1795-21rtkit-daemon00:20:101
179699480,3rtkit-daemon1795-21rtkit-daemon23:01:021
179699480,3rtkit-daemon1795-21rtkit-daemon19:38:231
179699470,3rtkit-daemon1795-21rtkit-daemon23:15:071
179699460,5rtkit-daemon2108897-21latency_hist23:30:020
179699460,1rtkit-daemon1795-21rtkit-daemon20:39:091
179699450,4rtkit-daemon1795-21rtkit-daemon19:19:271
179699450,3rtkit-daemon0-21swapper/021:44:080
20784032440,1sleep12078404-21sh22:49:111
179699440,3rtkit-daemon0-21swapper/000:10:400
179699440,17rtkit-daemon1795-21rtkit-daemon22:08:191
179699430,3rtkit-daemon0-21swapper/019:31:420
179699420,4rtkit-daemon1795-21rtkit-daemon00:07:000
179699420,3rtkit-daemon0-21swapper/020:10:070
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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