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2026-04-15 - 08:06
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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 Wed Apr 15, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
919624130,0sleep00-21swapper/019:16:190
942624030,0sleep20-21swapper/219:19:012
937223927,0sleep30-21swapper/319:18:223
918723725,0sleep10-21swapper/119:16:121
339960,0migration/332389-21sh00:12:113
339960,0migration/324533-21latency_hist21:00:143
339960,0migration/320264-21sh22:30:383
339960,0migration/319453-21sh00:41:573
339960,0migration/318826-21sh23:25:493
339960,0migration/317013-21sh21:53:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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