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2026-05-21 - 09:52
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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 Thu May 21, 2026 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38012022221192,18sleep70-21swapper/719:06:227
38011812219170,39sleep60-21swapper/619:06:046
38012432218187,21sleep30-21swapper/319:06:593
38011512216164,16sleep40-21swapper/419:05:394
38012092210179,19sleep50-21swapper/519:06:285
38012132207177,20sleep00-21swapper/019:06:310
38012322206178,18sleep10-21swapper/119:06:481
38012712205177,18sleep20-21swapper/219:07:222
39139572560,0sleep70-21swapper/722:30:027
380167399361,30cyclictest3883043-21unix_chkpwd21:35:006
380167399350,29cyclictest3958842-21http23:50:126
3801665993433,1cyclictest3863610-21systemd-run21:00:003
380166599330,4cyclictest1-21systemd22:00:013
3801664993328,4cyclictest3849570-21cron20:35:012
380167699320,31cyclictest3917014-21http22:35:127
3801673993228,4cyclictest0-21swapper/622:15:116
380167199320,31cyclictest3961166-21cron23:55:015
3801667993232,0cyclictest0-21swapper/421:00:014
380166499320,31cyclictest890-21systemd-logind22:30:022
380167399310,30cyclictest0-21swapper/600:00:136
380165999310,30cyclictest3894656-21apt-get21:55:110
3801676993029,1cyclictest17850irq/4-ttyS020:50:017
3801673993027,3cyclictest0-21swapper/622:35:116
3801673993022,1cyclictest0-21swapper/621:50:016
3801673993022,1cyclictest0-21swapper/621:50:016
380167399300,29cyclictest3944444-21cron23:25:026
380167399300,29cyclictest0-21swapper/623:45:116
380167399300,29cyclictest0-21swapper/622:28:596
380166599300,29cyclictest0-21swapper/322:27:223
380166499300,29cyclictest0-21swapper/219:40:022
380166199300,29cyclictest290-21plymouthd20:30:001
380165999300,29cyclictest3869117-21cron21:10:010
3801676992928,1cyclictest3979199-21apt-get00:25:117
3801676992927,1cyclictest3833336-21apt-get20:05:147
3801676992927,1cyclictest0-21swapper/719:15:117
3801676992924,4cyclictest3860749-21cron20:55:017
380167699290,29cyclictest3824544-21cron19:50:017
380167699290,28cyclictest3816630-21apt-get19:35:127
380167699290,28cyclictest0-21swapper/720:10:127
380167699290,28cyclictest0-21swapper/700:20:117
380167399290,28cyclictest0-21swapper/619:45:026
380167399290,28cyclictest0-21swapper/619:25:126
380167399290,1cyclictest3846840-21idleruntime-cro20:30:016
380167399290,1cyclictest0-21swapper/620:35:106
3801671992928,1cyclictest290-21plymouthd23:30:025
380167199290,28cyclictest3838885-21apt-get20:15:125
380167199290,28cyclictest290-21plymouthd19:25:025
3801667992927,2cyclictest3896994-21cron22:00:014
3801667992927,1cyclictest856-21dbus-daemon19:50:024
380166799290,28cyclictest3944882-21apt-get23:25:114
380166799290,28cyclictest0-21swapper/400:20:104
3801665992928,1cyclictest0-21swapper/323:10:023
3801665992928,1cyclictest0-21swapper/300:25:113
3801665992928,1cyclictest0-21swapper/300:01:143
380166599290,28cyclictest3841687-21apt-get20:20:123
380166599290,28cyclictest0-21swapper/323:25:113
380166599290,28cyclictest0-21swapper/323:20:103
380166599290,28cyclictest0-21swapper/319:40:123
380166599290,1cyclictest0-21swapper/319:55:123
3801664992927,1cyclictest3947661-21apt-get23:30:122
3801664992927,1cyclictest0-21swapper/222:50:112
3801664992927,1cyclictest0-21swapper/200:10:102
380166499290,28cyclictest3984753-21apt-get00:35:122
380166499290,28cyclictest3816205-21munin-run19:35:012
380166499290,28cyclictest0-21swapper/222:55:112
380166499290,28cyclictest0-21swapper/222:40:112
380166499290,28cyclictest0-21swapper/222:35:262
380166499290,28cyclictest0-21swapper/222:00:112
380166499290,28cyclictest0-21swapper/221:55:102
380166499290,28cyclictest0-21swapper/220:45:112
380166499290,28cyclictest0-21swapper/219:25:122
380166499290,28cyclictest0-21swapper/200:15:112
380166499290,28cyclictest0-21swapper/200:05:132
3801661992928,1cyclictest26177-21kworker/1:0-events22:05:101
3801661992927,1cyclictest0-21swapper/123:55:131
3801661992926,2cyclictest36-21ksoftirqd/122:35:011
380166199290,28cyclictest0-21swapper/123:15:131
380166199290,28cyclictest0-21swapper/122:50:101
380166199290,28cyclictest0-21swapper/121:50:111
380166199290,28cyclictest0-21swapper/121:05:121
380166199290,28cyclictest0-21swapper/119:35:111
3801659992924,4cyclictest3952775-21cron23:40:010
380165999290,28cyclictest3897451-21apt-get22:00:110
380165999290,28cyclictest0-21swapper/020:45:110
380165999290,28cyclictest0-21swapper/020:40:110
380165999290,28cyclictest0-21swapper/020:15:010
380165999290,28cyclictest0-21swapper/019:35:120
380165999290,28cyclictest0-21swapper/000:05:120
380165999290,1cyclictest0-21swapper/023:20:020
3801676992828,0cyclictest0-21swapper/722:40:127
3801676992827,1cyclictest3844039-21munin-run20:25:017
3801676992827,1cyclictest0-21swapper/722:30:117
3801676992827,1cyclictest0-21swapper/722:00:117
380167699280,28cyclictest0-21swapper/723:30:457
380167699280,28cyclictest0-21swapper/722:05:117
380167699280,28cyclictest0-21swapper/721:25:107
380167699280,27cyclictest0-21swapper/721:15:137
380167699280,0cyclictest0-21swapper/721:50:117
3801673992828,0cyclictest0-21swapper/620:10:126
3801673992827,1cyclictest0-21swapper/619:20:136
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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