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2026-06-08 - 16:58
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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 Jun 08, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
272699333,1cyclictest307-21systemd-journal07:40:011
273399300,29cyclictest25069-21cron12:30:013
273199300,29cyclictest0-21swapper/210:35:132
2722993028,1cyclictest15206-21cron09:55:000
273399290,28cyclictest0-21swapper/312:00:123
273399290,28cyclictest0-21swapper/310:30:023
273199290,28cyclictest6179-21apt-get09:35:132
273199290,28cyclictest29476-21apt-get11:30:112
273199290,28cyclictest26100-21munin-run08:00:012
273199290,28cyclictest10592-21apt-get08:35:122
273199290,28cyclictest0-21swapper/207:20:122
273199290,1cyclictest1512-21munin-run11:40:012
272699290,28cyclictest17583-21apt-get08:50:121
272699290,1cyclictest26892-21apt-get09:10:121
272299290,28cyclictest9063-21apt-get11:55:120
272299290,28cyclictest27987-21apt-get12:35:120
2733992827,1cyclictest0-21swapper/308:00:113
273399280,27cyclictest7327-21apt-get10:45:123
2731992828,0cyclictest0-21swapper/212:10:122
2731992825,2cyclictest19858-21cron10:05:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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