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2026-07-13 - 11:20
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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 Mon Jul 13, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2201925243,0sleep20-21swapper/219:26:582
2197925241,0sleep30-21swapper/319:26:313
2172423727,0sleep10-21swapper/119:23:331
2181923228,0sleep00-21swapper/019:24:400
339960,0migration/38258-21sh21:28:293
339960,0migration/3528-21munin-node21:22:583
339960,0migration/34065-21sh23:00:443
339960,0migration/321349-21irqcore22:52:503
339960,0migration/310874-21sh22:46:443
29815060,0irq/29-eth0-tx-8613-21interrupts23:22:482
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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