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2025-10-27 - 03:46
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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 Mon Oct 27, 2025 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
551621030,7sleep10-21swapper/123:15:231
15269999214,18cyclictest0-21swapper/000:30:140
1388229135,40sleep00-21swapper/019:05:210
15269998816,18cyclictest0-21swapper/000:05:150
1479128729,46sleep10-21swapper/119:06:521
15274998621,20cyclictest6333-21cat21:45:251
15269998310,30cyclictest12405-21taskset23:35:230
1526999824,46cyclictest22959-21python300:00:300
1526999823,44cyclictest2657-21ntp_states00:35:310
15274997834,38cyclictest26-21ksoftirqd/100:18:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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