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2024-07-25 - 04:56
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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 Thu Jul 25, 2024 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
231332292224,36sleep10-21swapper/11
230562257184,18sleep00-21swapper/00
230582255161,27sleep20-21swapper/22
231802226189,24sleep30-21swapper/33
2355199202196,3cyclictest25454-21munin-run3
2354799158152,4cyclictest25476-21awk2
2354099150145,3cyclictest25468-21perf0
1237521320,3sleep22354799cyclictest2
2354299125120,3cyclictest0-21swapper/11
124242650,3sleep012398-21sendmail0
124782530,2sleep2271rcuc/22
23551992817,5cyclictest665-21runrttasks3
293342270,3sleep30-21swapper/33
23547992620,4cyclictest20410-21sh2
2355199257,3cyclictest35-21ksoftirqd/33
2354799251,19cyclictest30688-21apt-get2
2355199245,2cyclictest111rcu_preempt3
23551992419,3cyclictest4627-21grep3
23551992416,2cyclictest35-21ksoftirqd/33
23551992414,3cyclictest35-21ksoftirqd/33
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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