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2026-06-10 - 13:33
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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 20 highest latencies:
System rack8slot4.osadl.org (updated Wed Jun 10, 2026 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29382962232170,19sleep50-21swapper/519:07:415
29381832231173,18sleep60-21swapper/619:06:056
29383032230169,20sleep30-21swapper/319:07:473
29383542226168,46sleep70-21swapper/719:08:327
29382302224161,20sleep40-21swapper/419:06:444
29381782217159,47sleep20-21swapper/219:06:012
29382352213185,19sleep00-21swapper/019:06:480
29381682205175,20sleep10-21swapper/119:05:521
2938667993535,0cyclictest0-21swapper/219:50:292
2938679993328,4cyclictest3006208-21cron21:10:017
293867499330,32cyclictest2972844-21systemd-run20:10:025
2938668993328,4cyclictest2989509-21cron20:40:023
2938664993328,4cyclictest279850-21systemd-journal00:20:021
2938679993230,1cyclictest0-21swapper/719:20:027
293867499320,32cyclictest1-21systemd21:50:015
293867099320,30cyclictest2961617-21cron19:50:014
293866499320,31cyclictest3070244-21cron23:05:011
293866499320,31cyclictest2995517-21chrt20:50:071
293866299320,31cyclictest2941333-21cron19:15:000
293867999310,30cyclictest3020134-21cron21:35:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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