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2026-09-12 - 15:32
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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 rackeslot5.osadl.org (updated Sat Sep 12, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3243699310,30cyclictest0-21swapper/222:35:122
32437993028,1cyclictest12526-21cron20:45:013
3243799300,29cyclictest9872-21cron00:05:003
3243699300,29cyclictest307-21systemd-journal00:10:012
3243599300,29cyclictest6326-21apt-get21:40:111
32437992928,1cyclictest5773-21apt-get20:30:113
32437992927,1cyclictest26793-21cron21:15:003
3243799290,28cyclictest0-21swapper/323:25:123
3243799290,1cyclictest1-21systemd23:00:013
32436992928,0cyclictest0-21swapper/223:05:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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