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2026-08-11 - 21:57
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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 Tue Aug 11, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21102342260184,20sleep00-21swapper/007:06:530
21101822260199,47sleep10-21swapper/107:06:201
2110726999388,4cyclictest2110264-21kworker/u8:207:29:250
211073299693,44cyclictest2277909-21apt-get11:55:171
136599680,31rtkit-daemon26-21ksoftirqd/110:37:550
211073299599,30cyclictest0-21swapper/108:07:081
136599590,4rtkit-daemon0-21swapper/012:09:481
2110732995850,6cyclictest2119392-21fwupd07:29:241
211073299582,7cyclictest2235335-21apt-get10:55:141
136599580,3rtkit-daemon1364-21rtkit-daemon10:25:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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