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2026-04-18 - 17:01
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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 Sat Apr 18, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1016499310,30cyclictest8732-21sh09:24:593
1016499300,29cyclictest4595-21apt-get10:25:123
1016399300,29cyclictest5812-21cron08:10:022
10162993028,1cyclictest20368-21cron09:50:001
10164992927,1cyclictest12143-21sh11:50:003
1016499290,1cyclictest23281-21apt-get11:05:123
10163992927,1cyclictest621-21dbus-daemon10:49:592
1016399290,1cyclictest25349-21awk11:10:012
1016399290,1cyclictest23035-21apt-get09:55:112
10161992928,1cyclictest17787-21apt-get08:35:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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