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2026-04-05 - 20:00
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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 rack5slot2.osadl.org (updated Sun Apr 05, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
267812224209,11sleep10-21swapper/107:05:101
288412199183,12sleep00-21swapper/007:07:570
289672194179,11sleep30-21swapper/307:09:343
287702168151,12sleep20-21swapper/207:07:042
323662490,0sleep10-21swapper/110:48:131
302162440,0sleep30-21swapper/309:12:123
297542420,0sleep30-21swapper/312:22:163
220152140,0sleep10-21swapper/112:18:451
24892100,0sleep30-21swapper/310:33:423
291769981,4cyclictest7922-21munin-run10:05:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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