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2025-12-10 - 14:58
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rackeslot4.osadl.org (updated Wed Dec 10, 2025 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2319165993027,2cyclictest2542353-21fwupd22:26:152
231916599281,1cyclictest0-21swapper/221:21:142
231916599280,2cyclictest191rcu_preempt23:38:542
231916099288,19cyclictest171ktimers/022:12:210
231916599272,23cyclictest2334654-21apt-get19:25:122
231916299272,22cyclictest2695380-21apt-get00:30:121
2319160992723,2cyclictest2575045-21latency_hist22:55:010
2319165992619,1cyclictest191rcu_preempt21:13:412
2319167992521,2cyclictest2626160-21apt-get23:35:133
231916799251,4cyclictest1-21systemd22:20:003
231916799251,4cyclictest1-21systemd22:20:003
231916799251,22cyclictest2422362-21apt-get20:50:163
231916799251,21cyclictest2329554-21apt-get19:20:123
231916599252,3cyclictest2461500-21apt-get21:25:152
2319165992520,3cyclictest2360483-21apt-get19:50:132
2319165992520,3cyclictest2360483-21apt-get19:50:122
231916599251,22cyclictest2411806-21apt-get20:40:132
231916599251,20cyclictest0-21swapper/219:35:122
231916599250,23cyclictest2692524-21cut00:25:212
231916599250,23cyclictest2575049-21apt-get22:55:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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