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2026-03-13 - 16:48
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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 100 highest latencies:
System rack8slot4.osadl.org (updated Fri Mar 13, 2026 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37762752239183,17sleep20-21swapper/207:09:042
37742012230166,52sleep60-21swapper/607:07:066
37741782224167,19sleep10-21swapper/107:06:461
37741072222168,43sleep70-21swapper/707:05:487
37742452220166,18sleep30-21swapper/307:07:453
37742572213159,17sleep50-21swapper/507:07:545
37762502212183,19sleep40-21swapper/407:08:424
37742152208181,17sleep00-21swapper/007:07:170
3776732993433,1cyclictest0-21swapper/311:05:023
377672099340,29cyclictest0-21swapper/111:15:011
377674499320,31cyclictest369-21systemd-journal08:00:026
377674499310,30cyclictest3827314-21apt-get08:43:006
3776739993128,2cyclictest3891831-21latency_hist10:40:015
377673999310,3cyclictest3796794-21turbostat.cron07:45:025
377673499310,30cyclictest0-21swapper/407:20:024
377673299310,3cyclictest3788426-21sh07:30:023
377673299310,30cyclictest3812942-21apt08:15:013
3776720993128,2cyclictest0-21swapper/111:30:011
3776751993028,1cyclictest16450irq/4-ttyS011:05:017
3776734993028,1cyclictest3876313-21taskset10:13:034
3776732993028,1cyclictest3916433-21systemd-run11:25:023
377672499300,29cyclictest3946901-21apt-get12:23:022
3776720993027,2cyclictest3851181-21debian-sa109:25:011
377672099300,2cyclictest3870291-21munin-run10:00:011
377672099300,29cyclictest0-21swapper/111:25:011
377672099300,1cyclictest3946256-21sh12:20:021
377671499300,29cyclictest3804856-21sh08:00:020
377671499300,29cyclictest1-21systemd09:45:010
377671499300,29cyclictest0-21swapper/008:13:030
377675199290,28cyclictest3906245-21http11:08:027
377675199290,28cyclictest3892479-21apt-get10:43:017
377675199290,28cyclictest3884399-21http10:28:027
377675199290,28cyclictest3788421-21sh07:30:017
377675199290,28cyclictest0-21swapper/712:23:027
377675199290,28cyclictest0-21swapper/710:33:027
377675199290,28cyclictest0-21swapper/709:08:047
377675199290,1cyclictest681-21dbus-daemon09:20:017
3776744992927,1cyclictest3917018-21apt-get11:28:026
377674499290,28cyclictest278-21plymouthd09:45:016
377674499290,28cyclictest0-21swapper/611:23:036
377674499290,28cyclictest0-21swapper/608:13:036
377674499290,1cyclictest0-21swapper/610:18:026
3776739992927,1cyclictest3938819-21apt-get12:08:015
3776739992927,1cyclictest1-21systemd09:10:005
377673999290,28cyclictest0-21swapper/510:18:025
377673999290,28cyclictest0-21swapper/508:58:045
377673999290,28cyclictest0-21swapper/508:53:045
377673999290,28cyclictest0-21swapper/508:08:025
377673999290,1cyclictest3815744-21apt-key08:20:015
3776734992927,1cyclictest0-21swapper/408:00:014
377673499290,28cyclictest0-21swapper/412:28:024
3776732992929,0cyclictest0-21swapper/311:58:033
3776732992927,1cyclictest0-21swapper/310:10:243
3776732992927,1cyclictest0-21swapper/309:13:043
3776732992927,1cyclictest0-21swapper/308:48:023
3776732992926,2cyclictest369-21systemd-journal08:55:003
377673299290,28cyclictest0-21swapper/311:53:063
377673299290,28cyclictest0-21swapper/310:05:013
377673299290,28cyclictest0-21swapper/308:00:023
377672499290,29cyclictest3867582-21sh09:55:012
377672499290,28cyclictest0-21swapper/211:38:022
377672499290,28cyclictest0-21swapper/211:23:022
377672499290,1cyclictest3805507-21apt-get08:03:022
3776720992928,1cyclictest0-21swapper/108:30:011
3776720992927,1cyclictest0-21swapper/108:23:031
3776720992926,2cyclictest0-21swapper/112:40:021
3776720992926,2cyclictest0-21swapper/112:33:051
377672099290,28cyclictest1-21systemd11:20:021
377672099290,28cyclictest0-21swapper/112:23:021
377672099290,28cyclictest0-21swapper/109:03:031
377672099290,28cyclictest0-21swapper/108:58:031
377672099290,1cyclictest0-21swapper/110:28:021
3776714992927,1cyclictest3914330-21apt-get11:23:020
3776714992927,1cyclictest3906242-21apt-get11:08:020
3776714992927,1cyclictest3862844-21apt-get09:48:030
3776714992927,1cyclictest3840415-21munin-run09:05:000
3776714992927,1cyclictest3813575-21apt-get08:18:020
3776714992927,1cyclictest0-21swapper/011:28:010
3776714992926,2cyclictest0-21swapper/011:33:020
377671499290,28cyclictest0-21swapper/007:43:030
377671499290,1cyclictest1-21systemd12:30:010
377671499290,1cyclictest0-21swapper/012:13:020
377671499290,1cyclictest0-21swapper/008:25:000
3776751992826,1cyclictest3812945-21dump-pmu-power08:15:017
377675199280,1cyclictest0-21swapper/712:05:017
3776744992827,1cyclictest0-21swapper/609:33:016
3776744992827,0cyclictest0-21swapper/608:18:036
377674499280,0cyclictest0-21swapper/610:13:036
3776739992827,1cyclictest0-21swapper/510:10:225
3776739992827,1cyclictest0-21swapper/510:08:005
3776739992826,1cyclictest0-21swapper/512:00:025
377673999280,28cyclictest3810882-21apt-get08:13:025
377673999280,28cyclictest0-21swapper/507:33:025
377673999280,0cyclictest0-21swapper/511:08:015
3776734992827,1cyclictest0-21swapper/410:07:594
377673499280,28cyclictest0-21swapper/411:55:024
377673499280,27cyclictest0-21swapper/412:35:014
377673499280,1cyclictest0-21swapper/412:03:034
377673499280,0cyclictest0-21swapper/408:48:024
3776732992827,1cyclictest3868219-21apt-get09:58:033
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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