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2026-06-03 - 04:55
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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 Wed Jun 03, 2026 00:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
19390992240179,50sleep40-21swapper/419:09:204
19390122233170,19sleep00-21swapper/019:08:030
19390612229167,50sleep20-21swapper/219:08:452
19389822222160,19sleep60-21swapper/619:07:366
19391272220163,45sleep30-21swapper/319:09:433
19367882217158,19sleep10-21swapper/119:05:061
19390482214185,19sleep70-21swapper/719:08:347
19389522208179,19sleep50-21swapper/519:07:115
1939359993432,1cyclictest2023038-21sh21:50:013
193935999330,4cyclictest1-21systemd21:15:013
1939364993231,1cyclictest711ktimers/520:55:015
193935499320,28cyclictest2039800-21apt-get22:20:051
193936999310,30cyclictest279850-21systemd-journal22:50:017
193936699310,29cyclictest290-21plymouthd22:20:106
1939357993128,2cyclictest2017466-21cron21:40:012
1939357993128,2cyclictest2017466-21cron21:40:012
1939354993126,1cyclictest2092782-21munin-run23:55:011
193936999300,29cyclictest2045839-21apt-get22:30:097
193936999300,1cyclictest290-21plymouthd22:50:097
193936699300,29cyclictest2051017-21munin-run22:40:016
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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