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2026-05-09 - 06:50
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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 10 highest latencies:
System rack1slot2.osadl.org (updated Sat May 09, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2905726160,0sleep00-21swapper/019:20:310
2845924140,0sleep10-21swapper/119:17:361
2909223627,0sleep30-21swapper/319:20:543
2888223127,0sleep20-21swapper/219:18:292
8305070,0irq/26-0000:00:22898-21sa123:22:132
8305070,0irq/26-0000:00:22508-21munin-run22:07:122
339960,0migration/39347-21sh23:49:533
339960,0migration/3742-21kthreadcore22:12:303
339960,0migration/331084-21sh22:12:063
339960,0migration/329175-21kthreadcore21:32:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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