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2026-05-22 - 09:07
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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 Fri May 22, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
47499870772,65cyclictest0-21swapper/019:12:100
47599782686,68cyclictest0-21swapper/119:12:111
325562676652,14sleep10-21swapper/119:06:321
326842322300,15sleep00-21swapper/019:07:510
4759911316,60cyclictest0-21swapper/121:01:001
1350621110,3sleep113507-21sh00:07:271
4759910915,57cyclictest0-21swapper/120:02:591
474991005,21cyclictest0-21swapper/000:06:000
475999315,61cyclictest0-21swapper/121:47:591
228699830,4rtkit-daemon2285-21rtkit-daemon23:59:270
228699830,4rtkit-daemon2285-21rtkit-daemon21:43:031
228699820,4rtkit-daemon2285-21rtkit-daemon20:45:221
228699800,4rtkit-daemon2285-21rtkit-daemon21:56:590
228699790,4rtkit-daemon2285-21rtkit-daemon20:20:260
228699790,3rtkit-daemon2285-21rtkit-daemon23:18:111
474997814,46cyclictest0-21swapper/023:21:580
308752780,5sleep130876-21ssh00:39:521
228699780,4rtkit-daemon2285-21rtkit-daemon23:38:411
228699780,4rtkit-daemon2285-21rtkit-daemon23:26:310
228699780,4rtkit-daemon2285-21rtkit-daemon22:37:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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