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2026-04-01 - 00:43
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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 Mar 31, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10455993330,2cyclictest621-21dbus-daemon12:00:010
1046399310,30cyclictest0-21swapper/210:10:132
10457993119,0cyclictest0-21swapper/110:20:111
1046499300,29cyclictest4470-21cron11:30:013
1046499300,29cyclictest20841-21cron12:05:013
1045799300,29cyclictest621-21dbus-daemon07:30:021
1045599300,29cyclictest2388-21perf12:35:020
10464992927,1cyclictest13115-21http07:15:023
1046499290,28cyclictest2659-21apt-get12:35:103
1046499290,28cyclictest0-21swapper/311:55:113
1046499290,28cyclictest0-21swapper/311:20:113
1046499290,1cyclictest9775-21cron09:25:013
1046499290,1cyclictest307-21systemd-journal10:10:003
10457992927,1cyclictest25459-21perf07:40:011
1045799290,28cyclictest16384-21munin-run08:30:001
1045799290,28cyclictest0-21swapper/111:00:111
10455992927,1cyclictest0-21swapper/009:35:000
1045599290,28cyclictest14133-21apt-get11:50:110
10464992828,0cyclictest18552-21apt-get10:50:113
10464992828,0cyclictest12123-21apt-get09:30:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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