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2026-06-12 - 12:33
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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 Fri Jun 12, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8561262232169,20sleep30-21swapper/319:09:583
8558222222170,17sleep10-21swapper/119:05:371
8558532213184,19sleep40-21swapper/419:06:054
8559142212184,18sleep60-21swapper/619:06:556
8558542211180,21sleep50-21swapper/519:06:065
8537652208179,19sleep70-21swapper/719:05:037
8560852207178,20sleep00-21swapper/019:09:230
8560672207180,18sleep20-21swapper/219:09:092
85632599370,32cyclictest968406-21cron22:30:010
85632599370,32cyclictest968406-21cron22:30:010
85632599330,29cyclictest0-21swapper/022:03:260
856337993227,4cyclictest895973-21cron20:20:025
85633299320,31cyclictest946116-21http21:50:013
856325993226,5cyclictest1004974-21latency_hist23:35:010
85633999310,30cyclictest879676-21apt-get19:50:056
856336993128,2cyclictest279850-21systemd-journal19:20:014
85633299310,30cyclictest865734-21apt-get19:25:053
85633099310,30cyclictest899198-21apt-get20:25:042
85632799310,29cyclictest0-21swapper/121:30:011
856325993126,4cyclictest946078-21latency_hist21:50:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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