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2026-03-10 - 16:41
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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 Tue Mar 10, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18928182265190,59sleep00-21swapper/007:08:210
18927432261190,27sleep10-21swapper/107:07:341
20450462700,3sleep10-21swapper/111:32:231
179699590,3rtkit-daemon0-21swapper/010:24:111
179699530,4rtkit-daemon1795-21rtkit-daemon12:39:341
179699530,4rtkit-daemon1795-21rtkit-daemon11:55:581
179699510,3rtkit-daemon1795-21rtkit-daemon08:20:051
20487132500,4sleep00-21swapper/011:37:280
179699450,22rtkit-daemon608-21rpcbind07:30:381
179699430,3rtkit-daemon1795-21rtkit-daemon11:09:550
179699420,3rtkit-daemon1795-21rtkit-daemon11:11:050
20588182410,2sleep12058819-21sh11:50:581
20412882410,3sleep0161rcuc/011:26:450
179699410,4rtkit-daemon141rcu_preempt08:13:300
179699400,8rtkit-daemon2000028-21ssh10:30:171
179699380,3rtkit-daemon0-21swapper/109:30:561
179699370,5rtkit-daemon1980009-21ssh10:01:470
179699370,4rtkit-daemon2069260-21sed12:05:261
179699370,3rtkit-daemon1795-21rtkit-daemon10:10:150
179699370,3rtkit-daemon0-21swapper/111:06:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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