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2026-06-14 - 09:42
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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
Characteristics of the 20 highest latencies:
System rackcslot6.osadl.org (updated Sun Jun 14, 2026 00:46:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
101615099322320,1cyclictest1320989-21kworker/7:100:35:027
101418023150,5sleep228-21ksoftirqd/219:05:162
101615099313311,1cyclictest1106376-21kworker/7:122:49:027
101613599313311,1cyclictest1147101-21kworker/5:200:35:025
101615099304302,1cyclictest0-21swapper/722:05:027
101614399304303,1cyclictest1221397-21kworker/6:123:39:026
101613599303302,1cyclictest1147101-21kworker/5:222:49:025
101613599298297,1cyclictest1147101-21kworker/5:223:39:025
101615099297296,1cyclictest0-21swapper/722:15:027
101613599296295,1cyclictest974591-21kworker/5:119:58:025
101615099295293,1cyclictest0-21swapper/700:23:027
101613599294293,1cyclictest1147101-21kworker/5:222:05:025
101610599294292,1cyclictest0-21swapper/100:35:021
101615099289288,1cyclictest0-21swapper/721:11:027
101615099289287,1cyclictest0-21swapper/700:09:037
101613599289287,2cyclictest1147101-21kworker/5:222:15:025
101615099288286,1cyclictest0-21swapper/723:27:027
101611499288286,1cyclictest0-21swapper/223:39:022
101615099287285,1cyclictest0-21swapper/719:55:027
101613599287285,1cyclictest1147101-21kworker/5:200:23:025
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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