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2026-06-27 - 05:22
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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 Sat Jun 27, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9848932234171,19sleep30-21swapper/319:05:333
9851932230169,18sleep60-21swapper/619:09:556
9850312228168,49sleep10-21swapper/119:07:321
9849782228166,19sleep40-21swapper/419:06:474
9851962224168,45sleep00-21swapper/019:09:570
9851892217187,20sleep20-21swapper/219:09:512
9849162212183,19sleep70-21swapper/719:05:537
9849972204175,19sleep50-21swapper/519:07:045
985447993626,6cyclictest1-21systemd23:10:023
98545699340,33cyclictest0-21swapper/723:20:017
98545699340,33cyclictest0-21swapper/722:45:037
98545699340,28cyclictest1103797-21cron22:45:017
98545699340,1cyclictest1110068-21munin-run22:55:027
98545699330,32cyclictest0-21swapper/700:20:027
98545599330,31cyclictest1036957-21cron20:45:016
98545099330,1cyclictest0-21swapper/400:30:024
98544799330,28cyclictest0-21swapper/300:15:013
98544499330,32cyclictest279850-21systemd-journal19:45:012
985456993227,4cyclictest0-21swapper/700:30:037
98545699320,0cyclictest0-21swapper/700:30:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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