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2026-07-04 - 15:29
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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 10 highest latencies:
System rackcslot4.osadl.org (updated Sat Jul 04, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
44917123520,6sleep1449172-21grep07:05:301
4496782270228,28sleep00-21swapper/007:09:370
5329432750,4sleep00-21swapper/009:52:340
4716942650,11sleep126-21ksoftirqd/108:00:201
6613292640,4sleep10-21swapper/112:37:531
449841995615,23cyclictest538354-21apt-get10:00:120
449841995016,12cyclictest603323-21python311:23:200
179699500,4rtkit-daemon1795-21rtkit-daemon08:16:010
179699490,3rtkit-daemon1795-21rtkit-daemon08:32:250
449841994810,21cyclictest616755-21apt-get11:40:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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