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2026-06-24 - 20:46
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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 Wed Jun 24, 2026 12:46:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
68039199348347,1cyclictest708285-21kworker/2:008:59:022
68039199332331,1cyclictest0-21swapper/210:05:022
68037299329328,1cyclictest0-21swapper/011:02:020
68039199328326,2cyclictest834641-21kworker/2:212:01:022
68039199327326,1cyclictest834641-21kworker/2:211:30:022
68039199327326,1cyclictest0-21swapper/210:55:022
68037299326325,1cyclictest0-21swapper/009:05:010
68039199325324,1cyclictest708285-21kworker/2:009:32:022
68039199325324,1cyclictest0-21swapper/212:21:022
68039199325324,1cyclictest0-21swapper/210:15:022
68039199325323,1cyclictest0-21swapper/211:53:022
68037299325324,1cyclictest798554-21kworker/0:010:51:020
68037299325324,1cyclictest0-21swapper/012:35:020
68037299325324,1cyclictest0-21swapper/012:30:020
68039199324323,1cyclictest0-21swapper/211:41:022
68039199324322,1cyclictest708285-21kworker/2:010:29:022
68039199324322,1cyclictest708285-21kworker/2:009:54:022
68039199323322,1cyclictest708285-21kworker/2:011:01:022
68039199323322,1cyclictest0-21swapper/212:09:012
68039199323322,1cyclictest0-21swapper/212:09:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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