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2026-03-31 - 10:33
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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 Tue Mar 31, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5213993333,0cyclictest0-21swapper/323:20:093
5208993333,0cyclictest0-21swapper/123:20:091
5210993114,4cyclictest839-21lldpd00:26:392
5213993028,1cyclictest307-21systemd-journal22:00:003
521099300,1cyclictest307-21systemd-journal19:25:012
5208993028,1cyclictest0-21swapper/122:00:001
5213992928,1cyclictest11181-21apt-get21:40:133
521399290,28cyclictest0-21swapper/319:40:123
521099290,28cyclictest0-21swapper/223:50:122
520899290,28cyclictest19468-21apt-get19:40:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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