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2026-05-09 - 07:24
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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 Sat May 09, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
155199310,29cyclictest307-21systemd-journal20:25:003
1551993028,1cyclictest0-21swapper/323:15:013
154699301,28cyclictest0-21swapper/221:20:102
1541993028,1cyclictest649-21gdbus21:50:001
1538993028,0cyclictest151rcu_preempt22:45:140
1551992927,1cyclictest0-21swapper/322:40:013
155199290,28cyclictest0-21swapper/322:05:103
155199290,28cyclictest0-21swapper/320:40:103
155199290,28cyclictest0-21swapper/319:15:103
155199290,28cyclictest0-21swapper/300:15:133
155199290,1cyclictest621-21dbus-daemon23:55:003
154699290,28cyclictest2870-21apt-get22:35:112
154699290,28cyclictest23333-21apt-get22:10:102
154699290,28cyclictest0-21swapper/223:15:112
1541992928,1cyclictest31158-21apt-get23:35:111
1541992927,1cyclictest307-21systemd-journal21:00:001
154199290,28cyclictest28304-21apt-get22:20:101
1538992927,1cyclictest621-21dbus-daemon20:44:590
153899290,28cyclictest8825-21munin-run21:40:000
153899290,28cyclictest7667-21perf20:30:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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