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2026-04-06 - 02:36
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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 50 highest latencies:
System rackeslot5.osadl.org (updated Sun Apr 05, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
622699404,36cyclictest0-21swapper/108:04:321
622999316,25cyclictest0-21swapper/207:53:202
622699310,2cyclictest307-21systemd-journal12:00:001
623499300,29cyclictest307-21systemd-journal09:00:003
623499300,29cyclictest22461-21basename11:10:013
622999300,29cyclictest20132-21idleruntime-cro11:05:012
622699300,29cyclictest621-21dbus-daemon10:15:001
622699300,29cyclictest12554-21turbostat.cron10:50:021
6234992927,1cyclictest0-21swapper/311:30:013
6234992926,2cyclictest30390-21sh12:35:003
623499290,28cyclictest28176-21apt-get07:55:133
622999290,28cyclictest30667-21apt-get12:35:112
622999290,28cyclictest0-21swapper/212:30:122
6226992927,1cyclictest21922-21apt-get10:00:121
6226992926,2cyclictest307-21systemd-journal09:10:011
622699290,29cyclictest0-21swapper/110:55:121
622699290,28cyclictest0-21swapper/108:35:111
622499290,1cyclictest13157-21cron07:25:020
6234992827,0cyclictest0-21swapper/310:45:113
623499280,28cyclictest0-21swapper/312:35:103
623499280,27cyclictest0-21swapper/309:40:133
623499280,0cyclictest0-21swapper/308:35:123
6229992826,1cyclictest14040-21sendmail-msp12:00:012
6229992826,1cyclictest0-21swapper/212:05:012
6229992815,13cyclictest28-21ksoftirqd/210:52:282
622999280,28cyclictest0-21swapper/208:50:102
622999280,0cyclictest0-21swapper/211:50:142
622999280,0cyclictest0-21swapper/209:55:122
6226992828,0cyclictest0-21swapper/109:10:131
6226992828,0cyclictest0-21swapper/107:15:131
622699280,28cyclictest0-21swapper/111:50:131
6224992827,1cyclictest5013-21apt-get11:40:110
6224992827,1cyclictest0-21swapper/009:50:010
622499280,28cyclictest0-21swapper/008:05:140
6234992727,0cyclictest0-21swapper/307:25:113
6234992726,1cyclictest23171-21apt-get07:45:123
623499270,27cyclictest0-21swapper/311:20:113
623499270,27cyclictest0-21swapper/310:35:093
6229992727,0cyclictest20853-21apt-get07:40:142
6229992727,0cyclictest0-21swapper/211:05:122
6229992727,0cyclictest0-21swapper/208:15:112
6229992727,0cyclictest0-21swapper/208:00:122
622999272,25cyclictest0-21swapper/208:26:552
6226992727,0cyclictest0-21swapper/108:30:101
6226992727,0cyclictest0-21swapper/107:55:121
622699270,27cyclictest0-21swapper/107:40:131
6224992727,0cyclictest7346-21apt-get11:45:110
6224992727,0cyclictest0-21swapper/012:30:130
6224992727,0cyclictest0-21swapper/007:10:120
6234992626,0cyclictest0-21swapper/311:55:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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