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2025-11-16 - 06:41
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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 rack9slot2.osadl.org (updated Sun Nov 16, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
203342315278,24sleep30-21swapper/33
202662295258,25sleep10-21swapper/11
203062294257,25sleep00-21swapper/00
2068999257253,2cyclictest0-21swapper/00
203382237201,23sleep20-21swapper/22
2069999209206,2cyclictest0-21swapper/22
2070399153149,2cyclictest0-21swapper/33
2069299125118,4cyclictest32427-21strings1
183002550,1sleep10-21swapper/11
105892530,4sleep3341rcuc/33
2070399350,33cyclictest4005-21kworker/3:23
2070399280,7cyclictest35-21ksoftirqd/33
2070399270,15cyclictest121942expr3
20699992610,13cyclictest10658-21latency_hist2
20692992513,7cyclictest29981-21apt-get1
20703992410,3cyclictest35-21ksoftirqd/33
20699992419,3cyclictest26791-21cut2
2068999243,19cyclictest0-21swapper/00
220152230,2sleep10-21swapper/11
20703992318,3cyclictest35-21ksoftirqd/33
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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