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2026-04-27 - 08:18
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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 Mon Apr 27, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1117999311,29cyclictest621-21dbus-daemon22:14:592
1118099290,28cyclictest23890-21apt-get21:55:123
1118099290,28cyclictest0-21swapper/320:05:123
1118099290,1cyclictest30877-21apt-get22:10:123
11179992927,1cyclictest27440-21cron19:45:012
1117999290,28cyclictest2870-21munin-run22:20:012
1117899294,25cyclictest0-21swapper/120:00:441
11178992927,1cyclictest25121-21sendmail-msp19:40:021
1117899290,28cyclictest5212-21apt-get21:15:131
1117899290,28cyclictest12207-21apt-get21:30:131
1117899290,1cyclictest0-21swapper/122:10:121
11177992927,1cyclictest31439-21sendmail-msp23:20:000
11177992927,1cyclictest2016-21sendmail-msp20:00:010
1117799290,28cyclictest765-21apt-get22:15:120
11180992826,1cyclictest0-21swapper/300:00:003
1118099280,27cyclictest0-21swapper/320:35:103
1118099280,0cyclictest0-21swapper/319:35:133
11179992827,1cyclictest0-21swapper/220:55:002
1117999280,0cyclictest1995-21apt-get00:35:142
11178992828,0cyclictest0-21swapper/122:40:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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