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2025-10-23 - 00:19
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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 Oct 22, 2025 12:46:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
100628323730,11sleep121-21ksoftirqd/107:05:161
100843399345343,1cyclictest0-21swapper/010:49:020
100843399336334,1cyclictest2484758-21kworker/0:109:03:030
100843399335334,1cyclictest2484758-21kworker/0:108:00:030
100843399334333,1cyclictest2484758-21kworker/0:112:35:020
100843399334333,1cyclictest2484758-21kworker/0:109:20:030
100843399334332,1cyclictest2484758-21kworker/0:109:35:030
100843399333332,1cyclictest2484758-21kworker/0:109:59:030
100843399332331,1cyclictest2484758-21kworker/0:111:07:030
100843399331329,1cyclictest2484758-21kworker/0:107:10:020
100843399331329,1cyclictest0-21swapper/009:14:030
100843399331329,1cyclictest0-21swapper/009:14:020
100843399330329,1cyclictest2484758-21kworker/0:110:31:020
100843399330329,1cyclictest2484758-21kworker/0:108:13:030
100843399329328,1cyclictest0-21swapper/010:09:020
100843399328327,1cyclictest0-21swapper/012:30:020
100843399328327,1cyclictest0-21swapper/010:50:010
100843399328327,1cyclictest0-21swapper/008:53:030
100843399327326,1cyclictest2484758-21kworker/0:112:20:020
100843399327326,1cyclictest2484758-21kworker/0:110:03:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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