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2026-03-10 - 20:24
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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 Tue Mar 10, 2026 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17290262244186,18sleep40-21swapper/407:09:394
17289852220185,22sleep20-21swapper/207:09:042
17269632220166,18sleep00-21swapper/007:07:500
17268162220168,17sleep50-21swapper/507:05:455
17268092220189,20sleep70-21swapper/707:05:407
17289972216189,17sleep30-21swapper/307:09:133
17268802213183,19sleep10-21swapper/107:06:381
17269502204174,20sleep60-21swapper/607:07:396
1729270993529,5cyclictest1-21systemd08:05:021
172927099350,1cyclictest1-21systemd12:20:021
172927599344,29cyclictest698-21in:imuxsock09:45:012
172929299330,32cyclictest0-21swapper/708:30:017
1729270993326,2cyclictest369-21systemd-journal08:00:021
172927099330,28cyclictest0-21swapper/109:38:031
172927099330,1cyclictest1743559-21latency_hist07:35:021
1729270993227,0cyclictest0-21swapper/111:50:021
1729292993128,2cyclictest16450irq/4-ttyS011:20:027
172928399310,3cyclictest1767799-21cron08:20:014
172928199310,29cyclictest1814373-21sh09:45:013
1729275993129,1cyclictest0-21swapper/212:15:022
1729275993127,3cyclictest1908851-21apt12:40:012
172927599310,30cyclictest1825133-21sh10:05:002
1729270993127,0cyclictest0-21swapper/107:43:051
172927099310,28cyclictest0-21swapper/112:00:021
1729267993128,2cyclictest1735479-21idleruntime-cro07:20:020
172929299300,29cyclictest369-21systemd-journal09:30:017
172929299300,29cyclictest369-21systemd-journal09:20:007
172929299300,29cyclictest0-21swapper/708:45:017
172929299300,1cyclictest1841281-21sh10:35:017
1729289993028,1cyclictest1852049-21latency_hist10:55:016
1729289993028,1cyclictest1852049-21latency_hist10:55:016
1729289993026,3cyclictest1748975-21idleruntime-cro07:45:026
172928999300,29cyclictest1770502-21sh08:25:006
1729287993027,2cyclictest1903476-21apt12:30:025
172928199300,2cyclictest1828454-21apt-get10:13:043
172928199300,29cyclictest700-21rs:main3
172928199300,29cyclictest1887310-21cron12:00:023
172927599300,2cyclictest1-21systemd07:35:022
172927599300,29cyclictest1789860-21idleruntime-cro09:00:012
172927099300,29cyclictest681-21dbus-daemon11:55:021
1729267993028,1cyclictest1729790-21apt-get07:13:050
172926799300,29cyclictest1898092-21munin-run12:20:010
1729292992927,1cyclictest1836538-21apt-get10:28:027
1729292992927,1cyclictest1775896-21munin-run08:35:017
1729292992925,3cyclictest1898079-21latency_hist12:20:027
1729292992924,4cyclictest1881933-21turbostat.cron11:50:017
172929299290,28cyclictest1787805-21apt-get08:58:047
172929299290,28cyclictest0-21swapper/712:35:027
172929299290,28cyclictest0-21swapper/711:08:047
172929299290,28cyclictest0-21swapper/710:45:007
172929299290,28cyclictest0-21swapper/710:13:037
172929299290,28cyclictest0-21swapper/709:15:017
1729289992927,1cyclictest1817062-21dump-pmu-power09:50:006
1729289992927,1cyclictest1-21systemd07:15:026
1729289992927,1cyclictest0-21swapper/612:05:026
172928999290,28cyclictest1831146-21apt-get10:18:036
172928999290,28cyclictest1806923-21apt-get09:33:046
172928999290,28cyclictest0-21swapper/612:13:056
172928999290,28cyclictest0-21swapper/608:50:016
172928999290,28cyclictest0-21swapper/608:28:036
1729287992927,1cyclictest0-21swapper/511:48:035
172928799290,28cyclictest0-21swapper/507:23:055
172928799290,0cyclictest0-21swapper/510:25:005
1729283992927,1cyclictest1855389-21apt-get11:03:054
1729283992927,1cyclictest1849995-21apt-get10:53:064
1729283992927,1cyclictest1849995-21apt-get10:53:064
1729283992927,1cyclictest1733422-21apt-get07:18:034
1729283992927,1cyclictest0-21swapper/411:20:024
172928399290,28cyclictest0-21swapper/409:55:014
1729281992928,1cyclictest0-21swapper/310:48:043
1729281992928,1cyclictest0-21swapper/310:48:043
1729281992928,1cyclictest0-21swapper/307:15:013
1729281992927,1cyclictest1817094-21basename09:50:013
1729281992926,2cyclictest369-21systemd-journal09:00:013
1729281992925,3cyclictest1825138-21idleruntime-cro10:05:003
172928199290,28cyclictest0-21swapper/311:43:053
172928199290,1cyclictest0-21swapper/307:20:013
1729275992927,1cyclictest0-21swapper/208:03:042
172927599290,28cyclictest0-21swapper/211:30:022
172927599290,28cyclictest0-21swapper/208:43:042
172927599290,28cyclictest0-21swapper/208:13:042
172927599290,1cyclictest1817070-21munin-run09:50:012
172927099290,28cyclictest0-21swapper/111:08:041
172927099290,28cyclictest0-21swapper/110:38:021
172927099290,28cyclictest0-21swapper/110:18:041
172927099290,28cyclictest0-21swapper/110:00:011
172927099290,28cyclictest0-21swapper/109:33:041
1729267992927,1cyclictest1887309-21cron12:00:020
1729267992927,1cyclictest1775872-21cron08:35:010
1729267992926,2cyclictest1814370-21sh09:45:000
172926799290,28cyclictest0-21swapper/011:48:030
172926799290,28cyclictest0-21swapper/010:55:020
172926799290,28cyclictest0-21swapper/010:55:020
172926799290,28cyclictest0-21swapper/010:25:010
172926799290,28cyclictest0-21swapper/008:20:010
172926799290,28cyclictest0-21swapper/007:58:020
1729292992828,0cyclictest0-21swapper/707:25:027
1729292992827,1cyclictest0-21swapper/712:30:027
1729292992823,4cyclictest1732331-21munin-node07:15:027
172929299280,27cyclictest0-21swapper/708:23:037
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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