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2026-04-02 - 04:04
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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 Wed Apr 01, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23272572233170,20sleep40-21swapper/407:08:224
23273142231171,19sleep50-21swapper/507:09:125
23273742218163,18sleep60-21swapper/607:10:016
23272602217161,18sleep70-21swapper/707:08:247
23272622215185,19sleep00-21swapper/007:08:250
23252692211182,19sleep20-21swapper/207:07:402
23252162207177,19sleep30-21swapper/307:06:533
23273672205175,19sleep10-21swapper/107:09:551
232760999350,1cyclictest0-21swapper/410:25:004
232760499350,34cyclictest0-21swapper/210:25:012
232760499340,33cyclictest0-21swapper/212:13:002
232760499340,33cyclictest0-21swapper/212:13:002
232760499340,33cyclictest0-21swapper/207:33:012
232760499330,32cyclictest278-21plymouthd11:15:012
232760499330,32cyclictest0-21swapper/209:48:022
232760999320,1cyclictest2461515-21unin-run11:15:014
232760999320,1cyclictest0-21swapper/408:30:024
232760499320,4cyclictest0-21swapper/208:30:022
2327599993230,2cyclictest681-21dbus-daemon10:10:011
232760699310,2cyclictest0-21swapper/308:43:003
232760499310,30cyclictest2436994-21awk10:30:002
232760499310,30cyclictest2342256-21http07:38:022
232760499310,30cyclictest2342256-21http07:38:022
232760499310,30cyclictest0-21swapper/212:18:012
232759599310,3cyclictest2358090-21turbostat.cron08:05:000
232761799300,29cyclictest2502794-21apt-get12:33:017
232761599300,28cyclictest2478510-21apt-get11:48:006
2327611993026,3cyclictest2458766-21idleruntime-cro11:10:015
232761199300,29cyclictest2461450-21latency_hist11:15:005
232761199300,29cyclictest0-21swapper/510:30:015
232760999300,2cyclictest1-21systemd08:00:014
232760999300,29cyclictest0-21swapper/411:33:024
2327606993028,1cyclictest0-21swapper/307:53:003
232760699300,29cyclictest2465051-21apt-get11:22:593
232760699300,29cyclictest0-21swapper/312:18:003
232760699300,29cyclictest0-21swapper/309:32:593
2327604993028,1cyclictest0-21swapper/208:25:022
2327604993026,3cyclictest2377445-21latency_hist08:40:022
2327604993025,4cyclictest0-21swapper/208:53:012
232760499300,29cyclictest2355370-21cron08:00:012
232759999300,29cyclictest2477883-21latency_hist11:45:011
232759599300,29cyclictest2407965-21http09:38:010
232759599300,29cyclictest2355393-21munin-run08:00:000
2327617992928,1cyclictest0-21swapper/710:50:017
2327617992926,3cyclictest2464406-21dump-pmu-power11:20:017
2327617992925,3cyclictest2426187-21apt10:10:007
232761799290,1cyclictest0-21swapper/708:47:597
2327615992927,1cyclictest278-21plymouthd08:10:026
2327615992927,1cyclictest2456705-21apt-get11:08:006
2327615992927,1cyclictest2383724-21apt-get08:53:006
2327615992927,1cyclictest0-21swapper/611:35:006
232761599290,28cyclictest2402584-21apt-get09:28:016
232761599290,28cyclictest0-21swapper/612:13:016
232761599290,28cyclictest0-21swapper/612:13:016
232761599290,28cyclictest0-21swapper/610:08:006
232761599290,28cyclictest0-21swapper/607:13:016
232761599290,1cyclictest2413360-21apt-get09:48:016
2327611992927,1cyclictest681-21dbus-daemon11:05:015
2327611992927,1cyclictest2448624-21apt-get10:53:025
232761199290,1cyclictest2421442-21apt-get10:03:025
2327609992927,2cyclictest0-21swapper/410:53:024
2327609992927,1cyclictest2377450-21dump-pmu-power08:40:014
2327609992926,2cyclictest2456081-21debian-sa111:05:014
2327609992926,2cyclictest0-21swapper/409:25:024
232760999290,28cyclictest0-21swapper/409:53:024
232760999290,28cyclictest0-21swapper/409:38:014
232760999290,28cyclictest0-21swapper/408:18:004
232760999290,1cyclictest2349755-21munin-run07:50:014
232760699290,28cyclictest278-21plymouthd07:40:013
232760699290,28cyclictest278-21plymouthd07:40:013
232760699290,28cyclictest2331479-21apt-get07:18:023
232760699290,28cyclictest0-21swapper/311:58:023
232760699290,28cyclictest0-21swapper/310:53:013
232760699290,28cyclictest0-21swapper/310:48:013
232760699290,28cyclictest0-21swapper/310:20:013
232760699290,28cyclictest0-21swapper/309:30:023
232760699290,1cyclictest2481249-21apt-get11:53:023
232760699290,1cyclictest2338946-21munin-run07:30:003
232760699290,0cyclictest0-21swapper/307:58:013
2327604992927,1cyclictest2467110-21sh11:25:002
2327604992926,3cyclictest0-21swapper/210:53:032
2327604992925,3cyclictest0-21swapper/209:25:022
232760499290,28cyclictest0-21swapper/209:38:002
232760499290,28cyclictest0-21swapper/208:10:022
232760499290,1cyclictest2469839-21systemd-run11:30:012
232760499290,1cyclictest0-21swapper/209:43:012
2327599992927,1cyclictest2360806-21idleruntime-cro08:10:021
2327599992927,1cyclictest2328108-21apt-get07:13:021
2327599992926,2cyclictest2494075-21sh12:15:011
2327599992926,2cyclictest2494075-21sh12:15:001
232759999290,28cyclictest0-21swapper/108:53:001
232759999290,28cyclictest0-21swapper/108:43:021
232759999290,1cyclictest2402587-21taskset09:28:011
232759599294,24cyclictest0-21swapper/007:46:560
2327595992927,1cyclictest2334186-21apt-get07:23:010
232759599290,28cyclictest0-21swapper/011:23:000
232759599290,28cyclictest0-21swapper/011:15:010
232759599290,28cyclictest0-21swapper/010:03:020
232759599290,28cyclictest0-21swapper/010:00:010
232759599290,1cyclictest0-21swapper/010:35:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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