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2026-07-02 - 11:54
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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 Thu Jul 02, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6391342266201,49sleep00-21swapper/019:09:230
6389032250179,56sleep10-21swapper/119:06:571
69532121230,4sleep1251rcuc/121:19:131
179699640,3rtkit-daemon1795-21rtkit-daemon20:52:050
179699560,4rtkit-daemon1795-21rtkit-daemon21:19:520
179699560,4rtkit-daemon1795-21rtkit-daemon19:55:200
179699540,3rtkit-daemon1795-21rtkit-daemon19:33:540
179699530,4rtkit-daemon1795-21rtkit-daemon21:10:500
179699520,3rtkit-daemon1795-21rtkit-daemon20:00:340
179699520,3rtkit-daemon0-21swapper/121:54:411
179699520,3rtkit-daemon0-21swapper/121:48:401
179699510,4rtkit-daemon1795-21rtkit-daemon00:39:091
8000182500,5sleep10-21swapper/123:41:071
179699500,4rtkit-daemon1795-21rtkit-daemon22:17:261
179699500,3rtkit-daemon0-21swapper/121:44:071
179699490,4rtkit-daemon1795-21rtkit-daemon19:58:111
179699480,3rtkit-daemon1795-21rtkit-daemon20:55:191
6895892470,1sleep1689586-21grep21:10:241
179699470,4rtkit-daemon1795-21rtkit-daemon22:25:501
179699470,3rtkit-daemon1795-21rtkit-daemon00:27:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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