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2025-12-22 - 13:11
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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 Dec 22, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37932502231179,17sleep50-21swapper/519:07:285
37931352219165,18sleep30-21swapper/319:05:493
37932282217160,45sleep40-21swapper/419:07:114
37932262217185,21sleep20-21swapper/219:07:102
37930922213182,20sleep70-21swapper/719:05:147
37931292212179,21sleep60-21swapper/619:05:446
37953232211184,17sleep00-21swapper/019:09:250
37930952209182,17sleep10-21swapper/119:05:161
3795611996111,25cyclictest0-21swapper/600:36:206
379560599388,29cyclictest3923308-21sh23:05:014
379560399350,34cyclictest681-21dbus-daemon21:45:013
3795614993330,2cyclictest698-21in:imuxsock22:10:027
3795594993329,1cyclictest0-21swapper/021:45:000
379561499310,30cyclictest3975136-21date00:40:007
379561499310,30cyclictest369-21systemd-journal22:40:027
379561499310,30cyclictest369-21systemd-journal22:40:027
3795609993127,3cyclictest3912525-21cron22:45:025
3795609993127,3cyclictest3912525-21cron22:45:025
379560399310,3cyclictest3825833-21sh20:05:013
379560399310,30cyclictest3923306-21idleruntime-cro23:05:013
379561499300,29cyclictest3934077-21latency_hist23:25:027
379561499300,29cyclictest0-21swapper/700:23:187
379561199300,29cyclictest3925988-21sh23:10:026
379561199300,29cyclictest0-21swapper/621:45:006
379560999300,30cyclictest681-21dbus-daemon00:40:005
379560999300,29cyclictest3893420-21turbostat.cron22:10:015
379560999300,29cyclictest0-21swapper/519:15:025
3795605993028,1cyclictest3859056-21apt-get21:08:164
379560599300,29cyclictest3926003-21munin-run23:10:024
379560599300,29cyclictest369-21systemd-journal20:48:174
379560599300,28cyclictest0-21swapper/422:33:174
3795603993028,1cyclictest3861747-21apt-get21:13:183
3795603993028,1cyclictest0-21swapper/323:33:163
3795603993027,2cyclictest0-21swapper/322:35:023
3795603993027,2cyclictest0-21swapper/322:35:023
3795603993027,1cyclictest3885330-21sh21:55:003
379560399300,1cyclictest3940098-21apt-get23:38:163
379560399300,1cyclictest3894061-21apt-get22:13:163
379560099300,28cyclictest0-21swapper/200:38:172
3795598993028,1cyclictest3918553-21apt-get22:58:151
3795598993028,1cyclictest3869190-21apt21:25:011
3795598993024,5cyclictest3820442-21dump-pmu-power19:55:001
379559899300,28cyclictest3872522-21apt-get21:33:171
379559499300,29cyclictest3923307-21sh23:05:020
379559499300,29cyclictest369-21systemd-journal23:55:020
3795614992928,1cyclictest3853021-21apt20:55:007
379561499290,28cyclictest0-21swapper/722:58:157
379561499290,28cyclictest0-21swapper/721:55:027
379561499290,28cyclictest0-21swapper/721:18:157
3795611992927,1cyclictest3834564-21apt-get20:23:186
3795611992927,1cyclictest3812357-21cron19:40:016
379561199290,28cyclictest0-21swapper/623:03:186
379561199290,28cyclictest0-21swapper/619:40:296
379561199290,28cyclictest0-21swapper/619:20:166
379561199290,1cyclictest3891373-21apt-get22:08:146
3795609992928,1cyclictest0-21swapper/522:38:155
3795609992928,1cyclictest0-21swapper/522:38:155
3795609992927,1cyclictest0-21swapper/520:43:185
379560999290,28cyclictest3918553-21apt-get22:58:145
379560999290,28cyclictest3818392-21apt-get19:53:165
379560999290,28cyclictest0-21swapper/523:38:165
379560999290,28cyclictest0-21swapper/520:38:155
379560999290,1cyclictest3945494-21apt-get23:48:165
379560999290,1cyclictest0-21swapper/522:03:145
379560999290,1cyclictest0-21swapper/520:55:005
3795605992927,1cyclictest0-21swapper/421:38:164
3795605992926,2cyclictest369-21systemd-journal21:15:014
379560599290,28cyclictest0-21swapper/421:00:004
3795603992927,1cyclictest3913180-21apt-get22:48:163
3795603992927,1cyclictest0-21swapper/321:38:163
379560399290,28cyclictest0-21swapper/322:08:153
379560399290,28cyclictest0-21swapper/320:53:173
379560399290,1cyclictest0-21swapper/322:33:173
379560399290,1cyclictest0-21swapper/321:28:143
3795600992926,3cyclictest3831210-21idleruntime-cro20:15:002
379560099290,28cyclictest3883289-21apt-get21:53:142
379560099290,28cyclictest0-21swapper/221:15:002
379560099290,28cyclictest0-21swapper/221:03:182
379560099290,1cyclictest42-21ksoftirqd/222:15:012
379560099290,1cyclictest3864437-21apt-get21:18:172
379560099290,1cyclictest3834564-21apt-get20:23:162
3795598992927,1cyclictest3875208-21apt-get21:38:151
3795598992927,1cyclictest3804335-21systemd-run19:25:011
379559899290,28cyclictest0-21swapper/122:00:011
3795594992928,1cyclictest3966424-21turbostat.cron00:25:020
3795594992927,1cyclictest0-21swapper/023:45:010
379559499290,28cyclictest3947580-21systemd-run23:50:020
379559499290,28cyclictest3817753-21latency_hist19:50:020
379559499290,28cyclictest0-21swapper/023:28:150
379559499290,28cyclictest0-21swapper/019:23:170
3795614992828,0cyclictest0-21swapper/720:03:177
3795614992827,1cyclictest0-21swapper/722:03:147
379561499280,0cyclictest0-21swapper/720:33:167
3795611992826,1cyclictest3867144-21apt-get21:23:166
3795611992826,1cyclictest3829164-21apt-get20:13:156
379560999280,27cyclictest0-21swapper/521:43:195
3795605992827,1cyclictest0-21swapper/420:53:174
3795605992827,1cyclictest0-21swapper/400:13:174
3795605992826,1cyclictest0-21swapper/423:33:164
3795605992826,1cyclictest0-21swapper/422:48:164
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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