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2026-05-20 - 19:07
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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 Wed May 20, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
36002532314272,27sleep00-21swapper/007:06:010
36002132252193,45sleep10-21swapper/107:05:351
179699570,4rtkit-daemon1795-21rtkit-daemon08:23:521
179699550,4rtkit-daemon1795-21rtkit-daemon11:33:001
179699540,3rtkit-daemon1795-21rtkit-daemon07:58:371
179699520,4rtkit-daemon1795-21rtkit-daemon11:55:430
179699520,3rtkit-daemon1795-21rtkit-daemon11:17:010
36910032510,3sleep10-21swapper/110:03:031
179699510,4rtkit-daemon1795-21rtkit-daemon11:47:250
37532912500,4sleep10-21swapper/111:25:391
37157582500,4sleep10-21swapper/110:35:501
179699500,4rtkit-daemon1795-21rtkit-daemon08:59:130
179699500,3rtkit-daemon1795-21rtkit-daemon08:46:390
179699490,3rtkit-daemon1795-21rtkit-daemon12:19:420
179699490,3rtkit-daemon1795-21rtkit-daemon08:34:030
179699490,3rtkit-daemon1795-21rtkit-daemon07:51:021
179699480,4rtkit-daemon1795-21rtkit-daemon11:43:070
179699480,4rtkit-daemon1795-21rtkit-daemon10:49:460
179699470,3rtkit-daemon1795-21rtkit-daemon09:23:290
36569332460,5sleep10-21swapper/109:17:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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