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2026-08-08 - 13:24
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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 Aug 08, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2083299886826,37cyclictest0-21swapper/119:12:341
2083199875797,71cyclictest0-21swapper/019:12:340
206562426405,14sleep10-21swapper/119:08:341
32922890,3sleep114-21rcuop/022:15:161
228699870,4rtkit-daemon2285-21rtkit-daemon23:09:300
2083199835,58cyclictest0-21swapper/021:32:000
2083199755,53cyclictest0-21swapper/019:35:590
2083199755,53cyclictest0-21swapper/019:35:590
228699700,3rtkit-daemon2285-21rtkit-daemon19:09:590
20831996627,25cyclictest0-21swapper/023:31:530
228699650,11rtkit-daemon0-21swapper/021:42:420
20832996329,28cyclictest800-21ntpdc22:10:201
20832996246,10cyclictest22314-21sort22:50:161
2083199625,50cyclictest0-21swapper/023:21:550
2083199625,50cyclictest0-21swapper/023:21:550
20832996128,27cyclictest3807-21munin-node00:15:181
20831996111,32cyclictest0-21swapper/022:25:210
228699600,7rtkit-daemon0-21swapper/122:45:240
20832996035,17cyclictest14794-21yum21:35:301
20832996033,18cyclictest2738-21munin-node21:15:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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