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2026-03-30 - 12:30
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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 rackaslot8.osadl.org (updated Mon Mar 30, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16442295269,17sleep20-21swapper/219:07:182
16482286260,18sleep10-21swapper/119:07:211
17762270222,38sleep30-21swapper/319:08:593
17202261234,17sleep00-21swapper/019:08:170
28812610,0sleep30-21swapper/323:31:543
258912610,0sleep00-21swapper/000:05:150
115352600,0sleep30-21swapper/323:18:053
69962580,0sleep20-21swapper/222:16:452
65482570,0sleep00-21swapper/023:53:490
259612540,0sleep30-21swapper/323:26:093
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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