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2025-11-21 - 07:27
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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 Fri Nov 21, 2025 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18449412262187,59sleep10-21swapper/119:07:401
18434372240174,51sleep00-21swapper/019:05:160
125899630,3rtkit-daemon1257-21rtkit-daemon23:02:390
18551232600,2sleep10-21swapper/119:30:231
19221762580,4sleep00-21swapper/021:46:160
125899560,4rtkit-daemon1257-21rtkit-daemon21:55:240
125899560,4rtkit-daemon1257-21rtkit-daemon21:55:240
125899550,4rtkit-daemon1257-21rtkit-daemon23:23:231
125899540,4rtkit-daemon1257-21rtkit-daemon23:31:041
125899540,4rtkit-daemon1257-21rtkit-daemon00:07:160
125899530,4rtkit-daemon1257-21rtkit-daemon19:16:331
125899510,4rtkit-daemon1257-21rtkit-daemon20:40:290
18744992500,5sleep1251rcuc/120:20:151
125899470,4rtkit-daemon1257-21rtkit-daemon21:02:471
125899470,4rtkit-daemon1257-21rtkit-daemon21:02:471
125899460,4rtkit-daemon1257-21rtkit-daemon22:29:171
125899460,3rtkit-daemon1257-21rtkit-daemon22:07:491
18789272440,2sleep00-21swapper/020:30:270
125899400,4rtkit-daemon0-21swapper/021:38:110
125899390,3rtkit-daemon0-21swapper/122:13:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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