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2026-06-17 - 11:18
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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 10 highest latencies:
System rack1slot2.osadl.org (updated Wed Jun 17, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1367023929,0sleep30-21swapper/319:22:213
1376823423,0sleep00-21swapper/019:23:310
1388422824,0sleep20-21swapper/219:24:492
1368822824,0sleep10-21swapper/119:22:351
14005991515,0cyclictest25996-21sensors21:40:492
339970,0migration/38899-21munin-node22:10:413
339970,0migration/322575-21munin-node22:15:523
339960,0migration/39641-21sh23:45:023
339960,0migration/331974-21sh23:36:183
339960,0migration/327982-21sh22:57:453
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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