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2025-07-12 - 11:16
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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 Jul 12, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31655995414,11cyclictest0-21swapper/019:13:280
3165699455406,25cyclictest0-21swapper/119:13:291
315242228207,15sleep10-21swapper/119:09:031
3154429268,17sleep00-21swapper/019:09:160
31656999015,52cyclictest0-21swapper/123:57:591
216899880,5rtkit-daemon2167-21rtkit-daemon22:39:580
31656998612,56cyclictest0-21swapper/122:02:591
43802850,5sleep14381-21grep20:50:271
216899840,4rtkit-daemon2167-21rtkit-daemon00:27:450
216899820,13rtkit-daemon0-21swapper/019:50:590
216899800,4rtkit-daemon2167-21rtkit-daemon22:55:171
31656997652,10cyclictest14-21rcuop/022:25:581
216899760,6rtkit-daemon2167-21rtkit-daemon21:40:011
31655997542,27cyclictest0-21swapper/000:20:580
216899750,5rtkit-daemon2167-21rtkit-daemon00:16:050
216899750,4rtkit-daemon2167-21rtkit-daemon21:55:361
216899750,4rtkit-daemon2167-21rtkit-daemon00:01:131
216899750,3rtkit-daemon2167-21rtkit-daemon21:27:351
216899740,4rtkit-daemon2167-21rtkit-daemon22:51:131
216899730,4rtkit-daemon2167-21rtkit-daemon20:33:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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