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2026-04-27 - 05:58
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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 Mon Apr 27, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9342956933,16sleep00-21swapper/019:08:520
115699906825,52cyclictest0-21swapper/019:10:030
115899777697,49cyclictest0-21swapper/119:10:041
115899434355,47cyclictest0-21swapper/119:36:021
115699365289,49cyclictest0-21swapper/019:36:020
11569912659,61cyclictest0-21swapper/021:32:590
2286991050,4rtkit-daemon2285-21rtkit-daemon00:01:041
228699980,4rtkit-daemon2285-21rtkit-daemon22:47:391
228699980,4rtkit-daemon2285-21rtkit-daemon22:24:131
228699980,4rtkit-daemon2285-21rtkit-daemon21:02:121
228699980,4rtkit-daemon2285-21rtkit-daemon00:34:451
228699960,4rtkit-daemon2285-21rtkit-daemon22:37:571
228699960,4rtkit-daemon2285-21rtkit-daemon20:51:011
228699960,4rtkit-daemon2285-21rtkit-daemon20:04:111
136682960,6sleep113667-21ssh23:07:191
228699940,4rtkit-daemon2285-21rtkit-daemon19:23:301
228699890,4rtkit-daemon16110-21sh23:11:131
228699870,4rtkit-daemon2285-21rtkit-daemon23:56:001
228699860,4rtkit-daemon2285-21rtkit-daemon21:54:181
228699850,6rtkit-daemon2285-21rtkit-daemon19:06:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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