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2026-05-07 - 23:38
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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 May 07, 2026 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178482269239,17sleep20-21swapper/22
179122250173,25sleep00-21swapper/00
178322247186,48sleep10-21swapper/11
177912229191,25sleep30-21swapper/33
1830799226220,4cyclictest20268-21apt-get3
1830099198193,3cyclictest20280-21perf1
1830599190183,5cyclictest20259-21munin-run2
1829299169164,3cyclictest0-21swapper/00
14242690,2sleep00-21swapper/00
109722650,2sleep20-21swapper/22
153632420,1sleep00-21swapper/00
190112400,1sleep30-21swapper/33
123372350,1sleep00-21swapper/00
18292993414,18cyclictest21727-21awk0
18292993412,5cyclictest22732-21grep0
18292993214,3cyclictest11608-21seq0
18292993212,4cyclictest26619-21seq0
18292993212,4cyclictest18146-21idleruntime-cro0
18292993212,18cyclictest4843-21cat0
18292993112,3cyclictest15258-21awk0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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