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2026-01-12 - 00:47
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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 Sun Jan 11, 2026 12:44:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40040112232180,42sleep60-21swapper/607:08:446
40019182229171,19sleep30-21swapper/307:06:313
40020342219163,19sleep50-21swapper/507:08:115
40018132219173,37sleep20-21swapper/207:05:022
40018512213179,22sleep10-21swapper/107:05:331
40019462212153,19sleep40-21swapper/407:06:574
40019932210181,18sleep00-21swapper/007:07:340
40020272209178,20sleep70-21swapper/707:08:057
4004315994645,1cyclictest0-21swapper/210:05:022
4004308993532,2cyclictest0-21swapper/009:30:020
4004324993427,1cyclictest0-21swapper/508:58:135
4004324993427,1cyclictest0-21swapper/508:58:125
4004324993426,1cyclictest4182296-21cron12:40:015
4004333993228,3cyclictest4174234-21debian-sa112:25:007
400432499320,29cyclictest4140635-21munin-run11:20:005
400431899320,31cyclictest4108043-21turbostat.cron10:20:013
4004333993129,1cyclictest4163091-21apt-get12:03:127
400432999310,28cyclictest0-21swapper/611:50:016
400432499310,1cyclictest4046208-21apt-get08:28:115
400431599310,30cyclictest4132558-21sh11:05:002
400431599310,30cyclictest4048259-21latency_hist08:30:002
400431399310,30cyclictest369-21systemd-journal08:20:011
4004308993130,1cyclictest16-21ksoftirqd/010:25:010
4004308993127,3cyclictest4056597-21cron08:45:010
400433399300,29cyclictest0-21swapper/711:23:137
400432999300,29cyclictest369-21systemd-journal11:55:016
4004324993028,1cyclictest4048901-21apt-get08:33:125
400432099300,29cyclictest4021723-21apt-get07:43:144
400432099300,29cyclictest369-21systemd-journal10:05:014
400431599300,29cyclictest4154116-21munin-run11:45:012
400431399300,29cyclictest958-21gmain08:05:001
4004308993029,0cyclictest0-21swapper/012:38:120
400430899300,30cyclictest4084447-21apt-get09:38:110
400430899300,29cyclictest4070334-21latency_hist09:10:020
400430899300,29cyclictest4070334-21latency_hist09:10:010
4004333992927,1cyclictest4168727-21apt-get12:13:127
4004333992927,1cyclictest4100611-21apt-get10:08:127
400433399290,28cyclictest0-21swapper/709:28:137
400433399290,28cyclictest0-21swapper/709:05:027
400433399290,1cyclictest4050946-21sh08:35:007
400433399290,1cyclictest1-21systemd09:00:027
400433399290,1cyclictest1-21systemd09:00:017
400432999290,28cyclictest0-21swapper/612:30:006
400432999290,28cyclictest0-21swapper/610:13:136
400432999290,28cyclictest0-21swapper/607:50:006
4004324992927,1cyclictest4032488-21apt-get08:03:125
400432499290,28cyclictest4070974-21apt-get09:13:135
400432499290,28cyclictest4070974-21apt-get09:13:125
400432499290,28cyclictest0-21swapper/512:03:125
400432499290,28cyclictest0-21swapper/511:55:015
400432499290,28cyclictest0-21swapper/508:35:025
4004320992927,1cyclictest0-21swapper/412:40:004
4004320992926,2cyclictest4078420-21sh09:25:014
400432099290,28cyclictest0-21swapper/408:28:124
4004318992927,1cyclictest0-21swapper/310:03:153
400431899290,28cyclictest4100611-21apt-get10:08:113
400431899290,28cyclictest0-21swapper/311:18:133
400431899290,28cyclictest0-21swapper/310:33:153
400431899290,28cyclictest0-21swapper/309:58:133
400431899290,28cyclictest0-21swapper/307:30:003
400431599290,28cyclictest0-21swapper/211:38:112
400431599290,28cyclictest0-21swapper/210:18:122
400431599290,1cyclictest0-21swapper/209:53:132
400431399290,28cyclictest0-21swapper/111:53:101
400431399290,28cyclictest0-21swapper/108:28:111
400431399290,28cyclictest0-21swapper/107:28:121
400431399290,28cyclictest0-21swapper/107:25:011
4004308992928,1cyclictest0-21swapper/007:48:120
4004308992926,2cyclictest4116389-21idleruntime-cro10:35:020
400430899291,28cyclictest4125110-21apt-get10:53:130
400430899290,28cyclictest0-21swapper/010:18:120
400430899290,1cyclictest4137963-21awk11:15:000
4004333992827,1cyclictest0-21swapper/707:18:137
4004333992826,1cyclictest1-21systemd09:35:017
400433399280,28cyclictest0-21swapper/710:25:017
4004329992828,0cyclictest0-21swapper/611:58:136
4004329992827,1cyclictest0-21swapper/610:58:146
4004329992826,2cyclictest0-21swapper/609:48:126
4004329992824,3cyclictest4140618-21sh11:20:006
4004324992826,1cyclictest0-21swapper/509:03:125
400432499280,27cyclictest0-21swapper/510:00:015
4004320992827,1cyclictest0-21swapper/409:48:114
4004320992827,1cyclictest0-21swapper/408:23:134
400432099280,1cyclictest0-21swapper/407:48:124
4004318992828,0cyclictest0-21swapper/310:45:013
4004318992827,1cyclictest4146020-21latency_hist11:30:003
4004318992827,1cyclictest0-21swapper/308:13:133
4004318992826,1cyclictest4163091-21apt-get12:03:143
4004318992826,1cyclictest4008219-21apt-get07:18:143
400431599280,28cyclictest0-21swapper/212:08:132
400431599280,28cyclictest0-21swapper/209:43:122
400431599280,0cyclictest0-21swapper/211:13:132
400431599280,0cyclictest0-21swapper/207:43:142
4004313992827,1cyclictest0-21swapper/112:33:141
4004313992826,1cyclictest4180250-21apt-get12:38:121
4004313992826,1cyclictest0-21swapper/109:23:131
4004313992825,3cyclictest0-21swapper/109:53:121
400430899280,28cyclictest0-21swapper/010:30:010
400430899280,0cyclictest0-21swapper/011:08:130
400430899280,0cyclictest0-21swapper/010:13:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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