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2026-04-22 - 02:17
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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 rackeslot5.osadl.org (updated Tue Apr 21, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1317399300,29cyclictest649-21gdbus10:35:013
13166993028,1cyclictest9143-21cron08:10:011
1316699300,29cyclictest307-21systemd-journal11:10:021
13171992927,1cyclictest621-21dbus-daemon11:15:022
13171992927,1cyclictest621-21dbus-daemon11:15:012
1317199290,28cyclictest0-21swapper/210:45:112
1317199290,1cyclictest0-21swapper/207:55:012
13166992928,1cyclictest9988-21apt-get09:20:121
1316399290,28cyclictest312-21perf09:00:000
1316399290,28cyclictest0-21swapper/010:45:000
13173992828,0cyclictest23731-21apt-get08:40:123
13173992828,0cyclictest0-21swapper/311:45:123
1317399280,28cyclictest0-21swapper/312:30:133
1317399280,28cyclictest0-21swapper/309:30:103
13171992828,0cyclictest0-21swapper/209:00:122
13166992828,0cyclictest0-21swapper/110:35:141
13166992828,0cyclictest0-21swapper/108:50:111
1316699280,0cyclictest468-21apt-get12:25:141
1316699280,0cyclictest11369-21apt-get11:40:121
1316399280,28cyclictest0-21swapper/011:55:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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