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2026-07-04 - 20:43
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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 Sat Jul 04, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
147902960,6chrt14787-21missed_timers08:15:271
22818999111,68cyclictest0-21swapper/109:45:121
2281299897,64cyclictest13717-21apt-get09:45:120
2281899878,63cyclictest9608-21apt-get11:05:141
22818998614,57cyclictest0-21swapper/108:50:151
2106928631,42sleep00-21swapper/007:05:110
22818998511,63cyclictest0-21swapper/107:30:131
2281299857,67cyclictest0-21swapper/011:05:140
22818998410,59cyclictest0-21swapper/107:25:141
2281899836,61cyclictest26014-21apt-get11:50:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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