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2026-09-03 - 08:34
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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 rack3slot6.osadl.org (updated Thu Sep 03, 2026 00:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26896999413,74cyclictest0-21swapper/021:00:140
2640529420,28sleep00-21swapper/019:06:430
26896999013,69cyclictest0-21swapper/021:25:150
2637729029,48sleep10-21swapper/119:06:261
2689699897,67cyclictest349-21apt-get22:25:130
26896998918,59cyclictest0-21swapper/020:15:130
26896998913,60cyclictest0-21swapper/021:45:130
26896998813,61cyclictest0-21swapper/000:30:140
26896998714,66cyclictest0-21swapper/022:35:150
26896998714,58cyclictest0-21swapper/021:15:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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