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2026-08-27 - 02:05
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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 Thu Aug 27, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2503224637,0sleep20-21swapper/219:29:272
2517124334,0sleep10-21swapper/119:31:021
2501323026,0sleep30-21swapper/319:29:123
2482323026,0sleep00-21swapper/019:26:570
339970,0migration/330971-21sh23:20:163
339970,0migration/311824-21sh00:22:303
339960,0migration/37595-21sh00:59:143
339960,0migration/37039-21sh22:06:543
339960,0migration/327718-21munin-node22:56:393
29815060,0irq/29-eth0-tx-32719-21munin-node19:36:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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