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2026-04-13 - 05:50
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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 Mon Apr 13, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41044982240178,18sleep40-21swapper/419:09:204
41044522239180,20sleep50-21swapper/519:08:425
41044592236183,43sleep30-21swapper/319:08:473
41023152226169,18sleep20-21swapper/219:05:502
41022632214160,17sleep60-21swapper/619:05:056
41044362211182,18sleep70-21swapper/719:08:287
41023312210183,17sleep00-21swapper/019:06:040
41044862207179,18sleep10-21swapper/119:09:101
410478799360,1cyclictest0-21swapper/723:35:007
410478799353,1cyclictest16450irq/4-ttyS022:10:027
410477299350,30cyclictest55708-21turbostat.cron23:35:012
410478799340,1cyclictest40183-21apt-get23:07:587
410478099340,1cyclictest55704-21latency_hist23:35:014
410478799330,1cyclictest0-21swapper/723:42:597
410478299330,32cyclictest0-21swapper/522:37:595
4104780993327,5cyclictest1-21systemd21:40:014
4104772993328,4cyclictest4171640-21apt-get21:13:002
410477299330,28cyclictest0-21swapper/220:52:582
4104787993227,5cyclictest0-21swapper/700:12:597
410478299320,28cyclictest4114039-21apt-get19:27:575
410478799310,30cyclictest12365-21dump-pmu-power22:15:007
4104782993126,4cyclictest1-21systemd22:10:025
4104782993124,2cyclictest0-21swapper/500:12:595
4104780993127,3cyclictest0-21swapper/400:12:594
410478099310,30cyclictest0-21swapper/421:43:004
410478099310,29cyclictest26463-21apt-get22:42:594
4104772993127,4cyclictest0-21swapper/200:12:592
4104772993127,3cyclictest74593-21dump-pmu-power00:10:012
4104772993127,3cyclictest0-21swapper/221:40:002
410476799313,28cyclictest0-21swapper/100:05:011
4104787993028,1cyclictest4146883-21apt-get20:28:007
4104787993027,2cyclictest74590-21apt00:10:017
4104787993026,3cyclictest4114042-21http19:27:587
4104787993025,4cyclictest1-21systemd21:20:017
410478799300,29cyclictest0-21swapper/722:30:027
410478799300,29cyclictest0-21swapper/720:55:017
4104785993026,3cyclictest4157033-21idleruntime-cro20:45:016
410478599300,2cyclictest4132517-21apt20:00:016
4104782993023,5cyclictest55693-21cron23:35:015
410478299300,29cyclictest0-21swapper/520:50:025
410478099300,29cyclictest66510-21awk23:55:014
410478099300,1cyclictest0-21swapper/423:37:594
410477699300,2cyclictest4179400-21awk21:25:013
4104772993028,1cyclictest4146259-21debian-sa120:25:002
410477299300,29cyclictest12361-21latency_hist22:15:012
410477299300,29cyclictest0-21swapper/219:35:012
410476799300,29cyclictest278-21plymouthd00:15:011
4104762993027,2cyclictest4157033-21idleruntime-cro20:45:010
410476299300,28cyclictest1589-21idleruntime-cro21:55:010
4104787992927,2cyclictest0-21swapper/721:40:017
4104787992927,2cyclictest0-21swapper/721:13:007
4104787992927,1cyclictest4163295-21apt-get20:58:007
410478799290,28cyclictest0-21swapper/723:55:017
410478799290,28cyclictest0-21swapper/700:33:007
410478799290,28cyclictest0-21swapper/700:28:017
4104785992927,1cyclictest0-21swapper/623:23:026
410478599290,28cyclictest0-21swapper/621:58:006
410478599290,1cyclictest0-21swapper/622:45:016
410478299290,28cyclictest4121555-21systemd-run19:40:015
410478299290,28cyclictest0-21swapper/523:40:005
410478299290,28cyclictest0-21swapper/523:17:595
410478299290,1cyclictest0-21swapper/523:45:005
4104780992927,2cyclictest0-21swapper/400:32:594
4104780992927,1cyclictest74589-21turbostat.cron00:10:004
4104780992923,1cyclictest12990-21http22:17:594
410478099290,28cyclictest0-21swapper/423:23:024
410478099290,28cyclictest0-21swapper/421:57:594
410478099290,28cyclictest0-21swapper/400:22:584
410478099290,1cyclictest4118833-21systemd-run19:35:004
410478099290,1cyclictest12362-21idleruntime-cro22:15:014
410477699290,28cyclictest0-21swapper/323:17:583
410477699290,28cyclictest0-21swapper/323:13:003
410477699290,28cyclictest0-21swapper/321:17:583
410477699290,28cyclictest0-21swapper/321:12:593
410477699290,28cyclictest0-21swapper/320:32:593
410477699290,28cyclictest0-21swapper/320:12:593
4104772992928,1cyclictest0-21swapper/223:23:012
4104772992927,1cyclictest0-21swapper/220:27:592
4104772992924,4cyclictest0-21swapper/200:02:592
410477299290,28cyclictest4119421-21http19:37:572
410477299290,28cyclictest0-21swapper/222:42:592
410477299290,28cyclictest0-21swapper/222:30:022
410477299290,1cyclictest64413-21apt-get23:52:582
410476799290,29cyclictest4137913-21idleruntime-cro20:10:011
410476799290,28cyclictest0-21swapper/120:47:581
410476799290,28cyclictest0-21swapper/119:47:581
410476799290,1cyclictest1-21systemd19:40:011
410476799290,1cyclictest0-21swapper/121:05:011
4104762992927,1cyclictest56332-21apt-get23:37:590
4104762992927,1cyclictest278-21plymouthd21:45:000
410476299290,29cyclictest0-21swapper/000:00:000
410476299290,28cyclictest0-21swapper/021:28:000
410476299290,28cyclictest0-21swapper/021:27:590
410476299290,28cyclictest0-21swapper/020:52:590
410476299290,28cyclictest0-21swapper/020:22:590
410476299290,28cyclictest0-21swapper/000:28:010
410476299290,1cyclictest85991-21apt-get00:33:000
4104787992827,1cyclictest0-21swapper/700:17:587
4104787992826,1cyclictest0-21swapper/722:32:597
4104787992826,1cyclictest0-21swapper/720:07:587
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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