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2025-12-02 - 01:19
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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 rack9slot2.osadl.org (updated Mon Dec 01, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178322271186,70sleep20-21swapper/22
161402256181,25sleep10-21swapper/11
177042254185,55sleep00-21swapper/00
170452226188,25sleep30-21swapper/33
1804999211205,4cyclictest5923-21latency_hist3
1804299209202,4cyclictest5922-21latency_hist2
1803499161156,3cyclictest5913-21gpgv0
3098821460,2sleep21804299cyclictest2
180389910096,2cyclictest5924-21latency_hist1
18822600,2sleep30-21swapper/33
206152510,1sleep30-21swapper/33
289442460,3sleep30-21swapper/33
247922440,1sleep30-21swapper/33
193912440,2sleep10-21swapper/11
321832420,2sleep30-21swapper/33
312672410,2sleep00-21swapper/00
295712400,1sleep00-21swapper/00
308972290,1sleep30-21swapper/33
18034992912,3cyclictest9-21ksoftirqd/00
1803499260,6cyclictest9-21ksoftirqd/00
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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