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2026-05-03 - 11:50
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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 Sun May 03, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
317319918171723,88cyclictest0-21swapper/019:10:180
3173299913829,54cyclictest0-21swapper/120:09:181
3173199875816,48cyclictest0-21swapper/000:33:180
3173299826766,44cyclictest0-21swapper/100:33:191
3173199781700,49cyclictest0-21swapper/020:09:180
312462690669,14sleep10-21swapper/119:05:271
3173299335258,17cyclictest32411-21irqstats19:10:171
2286991140,4rtkit-daemon2285-21rtkit-daemon22:06:001
31732999026,43cyclictest0-21swapper/122:26:581
79502870,3sleep17951-21ssh23:58:381
228699860,43rtkit-daemon1847-21latency_hist22:50:021
31732998512,54cyclictest0-21swapper/121:05:591
31732998318,42cyclictest0-21swapper/119:22:581
228699800,4rtkit-daemon2285-21rtkit-daemon21:16:350
228699780,4rtkit-daemon2285-21rtkit-daemon22:57:221
228699770,4rtkit-daemon2285-21rtkit-daemon21:34:341
228699770,12rtkit-daemon0-21swapper/023:41:120
228699740,4rtkit-daemon2285-21rtkit-daemon22:10:161
228699740,4rtkit-daemon2285-21rtkit-daemon21:38:350
228699740,4rtkit-daemon2285-21rtkit-daemon00:21:570
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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