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2026-05-07 - 07:21
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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 May 07, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11554012302261,26sleep00-21swapper/019:08:060
11551402264186,29sleep10-21swapper/119:05:311
119948021180,4sleep00-21swapper/020:55:220
179699610,4rtkit-daemon1795-21rtkit-daemon23:34:330
179699610,4rtkit-daemon1795-21rtkit-daemon21:35:471
179699590,4rtkit-daemon1795-21rtkit-daemon21:51:170
179699580,3rtkit-daemon1795-21rtkit-daemon21:23:460
179699570,3rtkit-daemon1795-21rtkit-daemon21:30:460
11882492570,4sleep10-21swapper/120:30:141
179699560,3rtkit-daemon1795-21rtkit-daemon21:49:160
179699550,4rtkit-daemon1795-21rtkit-daemon22:54:341
179699540,4rtkit-daemon1795-21rtkit-daemon20:49:290
179699540,3rtkit-daemon1795-21rtkit-daemon20:10:001
179699530,5rtkit-daemon1795-21rtkit-daemon22:56:030
179699520,4rtkit-daemon1795-21rtkit-daemon22:16:490
179699520,4rtkit-daemon1795-21rtkit-daemon00:14:320
179699520,3rtkit-daemon1795-21rtkit-daemon19:25:570
179699510,3rtkit-daemon1795-21rtkit-daemon20:17:170
179699500,22rtkit-daemon1155668-21cyclictest00:29:520
179699470,4rtkit-daemon1795-21rtkit-daemon00:31:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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