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2026-05-10 - 12:46
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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 rack8slot4.osadl.org (updated Sun May 10, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14362552226167,47sleep70-21swapper/719:08:047
14362632219191,18sleep60-21swapper/619:08:116
14340332217188,19sleep00-21swapper/019:05:070
14363172211183,19sleep40-21swapper/419:08:574
14362772211183,18sleep20-21swapper/219:08:232
14363612207178,19sleep10-21swapper/119:09:351
14362442205175,20sleep50-21swapper/519:07:545
14361562205175,19sleep30-21swapper/319:06:383
143660199330,32cyclictest1532399-21apt-get22:00:140
143661299321,30cyclictest1-21systemd21:30:024
1436606993226,1cyclictest0-21swapper/223:35:032
143660699320,1cyclictest81350irq/125-eno121:40:162
143661799310,3cyclictest1473874-21apt-get20:15:145
143661299310,30cyclictest1462731-21apt-get19:55:154
1436608993129,1cyclictest0-21swapper/322:10:153
143660699310,28cyclictest0-21swapper/221:55:142
143660199310,30cyclictest374-21systemd-journal23:05:010
143660199310,30cyclictest1445633-21gdbus19:25:000
143660199310,28cyclictest1587722-21systemd-run23:40:010
1436623993028,1cyclictest290-21plymouthd23:15:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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