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2026-08-05 - 01:40
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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 Wed Aug 05, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
476227067,0sleep20-21swapper/219:25:292
474526564,0sleep00-21swapper/019:25:150
3050024839,0sleep30-21swapper/319:24:303
499723127,0sleep10-21swapper/119:28:121
51699964,0cyclictest15512-21kworker/0:223:59:480
35160,0ktimersoftd/30-21swapper/322:53:233
339960,0migration/3943-21sh21:38:363
339960,0migration/324293-21munin-node00:04:403
339960,0migration/323905-21sh22:47:173
339960,0migration/323684-21sh21:31:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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