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2025-04-02 - 08:22
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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 10 highest latencies:
System rack9slot2.osadl.org (updated Wed Apr 02, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20312308270,25sleep00-21swapper/00
21622260203,44sleep20-21swapper/22
253999250246,2cyclictest0-21swapper/33
20272234195,26sleep10-21swapper/11
253399233226,5cyclictest0-21swapper/22
22762230181,36sleep30-21swapper/33
252699198193,3cyclictest0-21swapper/00
253299173167,3cyclictest9590-21apt-get1
1812021610,3sleep3253999cyclictest3
221902570,1sleep30-21swapper/33
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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