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2026-05-13 - 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
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Wed May 13, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256768521970,2sleep30-21swapper/321:15:203
256768521970,2sleep30-21swapper/321:15:203
25764242720,1sleep02576422-21ssh21:20:420
25764242720,1sleep02576422-21ssh21:20:420
28447622710,1sleep12844761-21ssh00:18:291
26234142700,1sleep02623412-21ssh21:54:370
24648442480,0sleep02464848-21tr19:55:180
28511142260,2sleep02851111-21ssh00:20:240
2401842992616,2cyclictest0-21swapper/100:10:021
2401842992615,2cyclictest0-21swapper/121:10:021
2401842992421,2cyclictest2408497-21forks19:15:011
2401842992414,3cyclictest0-21swapper/121:55:011
2401841992421,2cyclictest2447958-21cron19:45:000
24076922230,2sleep30-21swapper/319:10:243
2401842992320,2cyclictest2769110-21systemd23:30:011
2401842992320,2cyclictest2498144-21latency_hist20:25:001
2401841992320,2cyclictest2692672-21idleruntime-cro22:40:000
2401841992314,8cyclictest2662173-21munin-run22:20:030
2401842992219,2cyclictest2479410-21/usr/sbin/munin20:10:011
240184199226,6cyclictest3834332-21rtkit-daemon22:40:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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