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2025-12-22 - 14:44
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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 Mon Dec 22, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
466499278272,4cyclictest27455-21awk2
43732273208,35sleep10-21swapper/11
44502256178,43sleep30-21swapper/33
42222256219,25sleep00-21swapper/00
43942254217,25sleep20-21swapper/22
466099142135,4cyclictest27432-21perf1
596921310,3sleep30-21swapper/33
466899114109,3cyclictest27458-21sendmail-msp3
465699110105,2cyclictest27410-21munin-run0
281892550,2sleep228196-21gltestperf2
31482540,2sleep00-21swapper/00
466899277,17cyclictest0-21swapper/33
466899265,19cyclictest16869-21date3
466899265,18cyclictest0-21swapper/33
4660992618,5cyclictest21567-21perf1
466099260,25cyclictest12306-21kworker/1:11
466099260,24cyclictest20036-21kworker/1:11
466899258,3cyclictest0-21swapper/33
466899254,18cyclictest0-21swapper/33
466899245,17cyclictest0-21swapper/33
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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