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2026-06-15 - 10:06
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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 Jun 15, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2028023824,0sleep00-21swapper/019:21:370
2027023626,0sleep10-21swapper/119:21:301
2052523424,0sleep20-21swapper/219:24:272
2045223127,0sleep30-21swapper/319:23:403
35160,0ktimersoftd/30-21swapper/320:20:353
339960,0migration/39724-21sh21:45:483
339960,0migration/321777-21aten_r1power_po00:25:283
339960,0migration/317169-21sh21:35:003
339960,0migration/315096-21sh23:40:563
29815060,0irq/29-eth0-tx-21126-21munin-node20:10:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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