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2025-11-03 - 09:57
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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 Mon Nov 03, 2025 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2923099300,29cyclictest303-21systemd-journal19:50:000
2923099300,29cyclictest303-21systemd-journal00:20:010
2923099300,1cyclictest15959-21cron23:15:010
2924099290,28cyclictest0-21swapper/320:00:133
2924099290,1cyclictest24281-21cron00:40:013
29236992928,1cyclictest19892-21apt-get00:30:152
29236992926,2cyclictest303-21systemd-journal23:25:022
2923699290,28cyclictest30083-21munin-run20:20:012
2923699290,28cyclictest0-21swapper/223:15:152
2923299290,28cyclictest15699-21awk19:50:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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