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2026-05-12 - 23:13
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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 May 12, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1871999310,30cyclictest307-21systemd-journal11:30:023
1871799300,29cyclictest307-21systemd-journal11:25:011
18719992927,1cyclictest871-21idleruntime-cro08:50:013
18719992927,1cyclictest17782-21perf10:35:023
1871999290,28cyclictest28879-21awk09:50:003
1871999290,28cyclictest0-21swapper/310:50:123
1871999290,28cyclictest0-21swapper/307:55:123
18718992927,1cyclictest12596-21munin-run09:15:002
1871899290,28cyclictest11606-21apt-get11:30:122
18716992927,1cyclictest7801-21cron12:30:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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