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2025-09-17 - 00:57
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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 Sep 16, 2025 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34253062261180,26sleep00-21swapper/007:07:430
34252532258184,59sleep10-21swapper/107:07:131
125899750,22rtkit-daemon1257-21rtkit-daemon11:35:010
3425733997268,3cyclictest3582314-21kworker/u8:011:37:401
34393112630,5sleep10-21swapper/107:40:231
125899560,4rtkit-daemon1257-21rtkit-daemon11:43:300
125899560,4rtkit-daemon1257-21rtkit-daemon07:21:270
125899550,4rtkit-daemon1257-21rtkit-daemon09:09:490
125899550,4rtkit-daemon1257-21rtkit-daemon07:35:490
125899540,4rtkit-daemon1257-21rtkit-daemon08:00:470
125899530,4rtkit-daemon1257-21rtkit-daemon12:37:410
125899530,4rtkit-daemon1257-21rtkit-daemon12:24:520
125899530,4rtkit-daemon1257-21rtkit-daemon10:39:171
125899530,4rtkit-daemon1257-21rtkit-daemon09:05:351
125899530,4rtkit-daemon1257-21rtkit-daemon07:13:280
125899520,3rtkit-daemon1257-21rtkit-daemon11:08:240
125899520,1rtkit-daemon1257-21rtkit-daemon07:50:141
35942842510,6sleep10-21swapper/111:51:541
125899510,3rtkit-daemon1257-21rtkit-daemon12:29:150
125899510,3rtkit-daemon1257-21rtkit-daemon11:12:470
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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