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2026-07-15 - 13:32
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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 Wed Jul 15, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2300328220,53sleep00-21swapper/019:06:180
23534998141,33cyclictest29066-21ntp_states23:55:300
2322228126,44sleep10-21swapper/119:08:411
23536997927,12cyclictest26-21ksoftirqd/121:40:111
23536997750,12cyclictest26-21ksoftirqd/120:35:131
23536997640,10cyclictest26-21ksoftirqd/122:20:291
23536997547,14cyclictest26-21ksoftirqd/123:40:101
23536997241,17cyclictest26-21ksoftirqd/121:15:151
23536996948,10cyclictest0-21swapper/123:50:121
23536996937,19cyclictest0-21swapper/122:00:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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