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2025-12-08 - 16:57
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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 08, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1327923110,26sleep30-21swapper/33
145232299263,24sleep00-21swapper/00
143762294211,68sleep20-21swapper/22
1483999291284,4cyclictest28763-21sendmail-mta0
1484599269260,4cyclictest505-21dbus-daemon1
145242266185,26sleep10-21swapper/11
1485499226221,3cyclictest28730-21munin-run3
2050721770,3sleep31485499cyclictest3
14850999590,3cyclictest0-21swapper/22
91382560,2sleep00-21swapper/00
91382560,2sleep00-21swapper/00
236272550,1sleep30-21swapper/33
45082460,2sleep30-21swapper/33
249402380,1sleep00-21swapper/00
38852370,2sleep00-21swapper/00
156072360,3sleep335-21ksoftirqd/33
14839992815,8cyclictest505-21dbus-daemon0
134672280,2sleep20-21swapper/22
1485499270,26cyclictest0-21swapper/33
1485099261,5cyclictest29663-21munin-run2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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