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2026-05-19 - 09:27
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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 May 19, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1485299310,30cyclictest31459-21cron19:45:011
14848993128,2cyclictest621-21dbus-daemon20:05:010
14858993027,2cyclictest17183-21cron19:15:003
14856993028,1cyclictest15636-21apache200:00:012
1485699300,2cyclictest17962-21idleruntime-cro21:35:002
1485299300,29cyclictest18202-21cron23:50:001
1484899300,29cyclictest8835-21latency_hist23:30:010
1485899290,28cyclictest5072-21apt-get22:15:013
1485899290,28cyclictest21115-21apt-get23:55:093
1485699290,28cyclictest6228-21apt-get23:25:032
1485699290,28cyclictest17968-21apt-get22:40:102
1485699290,1cyclictest13535-21apt-get21:25:112
14852992927,1cyclictest307-21systemd-journal22:35:001
1485299290,28cyclictest0-21swapper/120:50:111
1485299290,1cyclictest32540-21sh22:05:011
1485299290,1cyclictest27328-21apt-get20:45:121
14858992828,0cyclictest25006-21apt-get20:40:113
14858992827,1cyclictest25615-21cron00:05:013
14858992826,1cyclictest30303-21munin-run00:15:013
1485899280,27cyclictest0-21swapper/323:35:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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