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2026-05-16 - 14:09
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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
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack1slot8.osadl.org (updated Sat May 16, 2026 12:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2288899855774,50cyclictest0-21swapper/109:13:291
2288799762680,53cyclictest0-21swapper/009:13:280
225622732711,15sleep10-21swapper/107:07:061
224122601578,15sleep00-21swapper/007:05:380
2288799435369,55cyclictest3-21ksoftirqd/007:10:190
2288799118100,14cyclictest0-21swapper/011:40:590
2799321100,3sleep127992-21proc_pri09:55:221
228879910911,92cyclictest0-21swapper/011:05:590
228699890,4rtkit-daemon2285-21rtkit-daemon11:14:310
22887998630,37cyclictest0-21swapper/011:26:590
22887998565,14cyclictest0-21swapper/010:48:590
228699850,11rtkit-daemon0-21swapper/009:30:380
2288799813,70cyclictest6335-21ssh12:10:250
22887998112,51cyclictest3433-21munin-node07:45:140
22887997918,45cyclictest88850irq/46-eth0-tx-11:50:350
228699790,4rtkit-daemon2285-21rtkit-daemon08:57:280
22887997811,56cyclictest0-21swapper/008:24:590
228699770,5rtkit-daemon2285-21rtkit-daemon11:20:261
228699770,4rtkit-daemon2285-21rtkit-daemon10:56:561
228699770,4rtkit-daemon2285-21rtkit-daemon10:56:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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