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2026-05-01 - 16:10
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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 May 01, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40028362260186,19sleep10-21swapper/107:07:091
40029682252209,28sleep00-21swapper/007:08:320
41315042570,3sleep00-21swapper/010:53:440
179699570,4rtkit-daemon1795-21rtkit-daemon11:56:370
40967902540,4sleep00-21swapper/010:07:340
179699540,4rtkit-daemon1795-21rtkit-daemon10:44:140
179699520,4rtkit-daemon1795-21rtkit-daemon08:34:090
40104152500,4sleep14009798-21/usr/sbin/munin07:25:191
179699500,4rtkit-daemon1795-21rtkit-daemon12:15:511
179699500,4rtkit-daemon1795-21rtkit-daemon10:59:010
179699500,3rtkit-daemon1795-21rtkit-daemon08:53:151
179699480,4rtkit-daemon1795-21rtkit-daemon11:12:170
40710792440,4sleep00-21swapper/009:34:490
179699440,3rtkit-daemon1795-21rtkit-daemon12:13:371
179699430,3rtkit-daemon1795-21rtkit-daemon08:21:410
179699380,3rtkit-daemon0-21swapper/111:23:021
179699370,3rtkit-daemon0-21swapper/010:23:210
179699370,3rtkit-daemon0-21swapper/010:11:220
40725252360,1sleep00-21swapper/009:35:230
179699360,4rtkit-daemon1795-21rtkit-daemon10:31:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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