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2026-06-27 - 01:38
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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 Fri Jun 26, 2026 12:44:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25665993028,1cyclictest307-21systemd-journal09:15:001
25662993028,1cyclictest7064-21cron12:15:010
2566299300,29cyclictest621-21dbus-daemon10:05:020
25676992927,1cyclictest32015-21perf10:50:013
2567699290,28cyclictest0-21swapper/308:00:013
25670992927,1cyclictest9808-21cron08:55:002
25670992927,1cyclictest307-21systemd-journal12:05:012
25670992927,1cyclictest0-21swapper/209:35:002
25662992927,1cyclictest24142-21cron09:25:000
2566299290,28cyclictest14529-21apt-get07:55:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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