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2026-05-12 - 11:31
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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 May 12, 2026 00:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38475292230172,48sleep00-21swapper/019:08:360
38452732217162,45sleep30-21swapper/319:05:093
38476212209179,19sleep70-21swapper/719:09:567
38474672208177,21sleep10-21swapper/119:07:401
38473912208180,19sleep40-21swapper/419:06:384
38473842208179,19sleep60-21swapper/619:06:336
38475072206178,19sleep50-21swapper/519:08:165
38474272205177,19sleep20-21swapper/219:07:092
3847857993326,6cyclictest374-21systemd-journal21:20:017
3847857993326,6cyclictest374-21systemd-journal21:20:017
3847845993328,4cyclictest4021456-21cron00:20:013
3847857993226,5cyclictest0-21swapper/722:50:167
384785799320,1cyclictest3921366-21apt-get21:20:147
384785799320,0cyclictest0-21swapper/722:55:147
3847852993226,5cyclictest3960430-21apt-get22:30:146
3847846993227,4cyclictest3918125-21cron21:15:014
384784299320,30cyclictest4021914-21apt-get00:20:152
384784099320,31cyclictest3915333-21unix_chkpwd21:10:011
384783699320,31cyclictest3862833-21apt-get19:35:130
3847846993127,3cyclictest3996235-21latency_hist23:35:014
384784699310,30cyclictest0-21swapper/421:45:154
384784699310,28cyclictest0-21swapper/421:20:154
384784299310,30cyclictest3873968-21apt-get19:55:152
3847846993027,3cyclictest0-21swapper/421:25:024
384784699300,29cyclictest290-21plymouthd20:40:014
384784599300,29cyclictest3907007-21munin-run20:55:003
384784599300,29cyclictest0-21swapper/319:55:153
3847842993028,1cyclictest3890227-21cron20:25:012
3847842993028,1cyclictest0-21swapper/221:00:002
3847842993027,2cyclictest3895811-21cron20:35:012
384784299300,29cyclictest3985464-21apt-get23:15:132
384784099300,2cyclictest374-21systemd-journal22:05:011
3847857992928,1cyclictest0-21swapper/722:40:137
3847857992927,2cyclictest0-21swapper/722:45:147
3847857992925,3cyclictest3859578-21apt-get19:30:027
384785799290,28cyclictest4016333-21apt-get00:10:137
384785799290,28cyclictest0-21swapper/720:30:037
384785799290,28cyclictest0-21swapper/719:30:017
384785799290,1cyclictest3853999-21cron19:20:027
384785799290,1cyclictest1-21systemd20:30:007
3847852992927,1cyclictest374-21systemd-journal23:20:016
384785299290,28cyclictest3952067-21apt-get22:15:146
384785299290,28cyclictest290-21plymouthd00:30:006
384785299290,28cyclictest0-21swapper/623:50:146
384785299290,28cyclictest0-21swapper/621:25:146
384785299290,28cyclictest0-21swapper/620:10:156
3847848992928,1cyclictest0-21swapper/500:05:155
3847848992927,1cyclictest0-21swapper/523:20:035
3847848992927,1cyclictest0-21swapper/520:30:035
3847848992926,2cyclictest374-21systemd-journal00:15:015
384784899290,29cyclictest3949290-21apt-get22:10:145
384784899290,28cyclictest0-21swapper/519:30:135
384784899290,28cyclictest0-21swapper/500:00:145
384784899290,1cyclictest0-21swapper/523:55:045
3847846992927,2cyclictest0-21swapper/423:05:014
3847846992927,1cyclictest3899092-21apt-get20:40:144
384784699290,28cyclictest0-21swapper/422:55:124
384784699290,28cyclictest0-21swapper/419:35:144
384784699290,28cyclictest0-21swapper/419:30:134
384784699290,1cyclictest856-21dbus-daemon23:40:014
384784699290,1cyclictest3857239-21apt-get19:25:154
384784599290,28cyclictest3946505-21apt-get22:05:143
384784599290,28cyclictest0-21swapper/323:00:153
384784599290,28cyclictest0-21swapper/322:10:143
384784599290,28cyclictest0-21swapper/321:00:143
384784599290,28cyclictest0-21swapper/319:45:013
384784599290,28cyclictest0-21swapper/319:30:033
384784599290,28cyclictest0-21swapper/319:15:013
384784599290,28cyclictest0-21swapper/300:35:143
384784599290,1cyclictest3987810-21apt-get23:20:043
384784599290,1cyclictest3979911-21apt-get23:05:133
384784599290,1cyclictest3913004-21apt-get21:05:153
3847842992927,1cyclictest3854457-21apt-get19:20:122
3847842992927,1cyclictest0-21swapper/223:20:042
3847842992927,1cyclictest0-21swapper/220:50:152
3847842992925,3cyclictest3898597-21cron20:40:012
384784299290,28cyclictest0-21swapper/223:25:042
384784299290,28cyclictest0-21swapper/223:15:002
384784299290,28cyclictest0-21swapper/219:50:152
3847840992928,1cyclictest0-21swapper/123:05:021
3847840992927,1cyclictest3982247-21cron23:10:011
384784099290,28cyclictest3982687-21apt-get23:10:141
384784099290,28cyclictest0-21swapper/123:35:041
384784099290,28cyclictest0-21swapper/123:35:011
384784099290,28cyclictest0-21swapper/122:25:151
384784099290,28cyclictest0-21swapper/121:20:151
384784099290,28cyclictest0-21swapper/120:15:141
384784099290,1cyclictest3963206-21apt-get22:35:151
384783699290,29cyclictest1-21systemd21:55:000
384783699290,28cyclictest0-21swapper/022:10:150
384783699290,28cyclictest0-21swapper/020:05:130
384783699290,28cyclictest0-21swapper/019:50:150
384783699290,28cyclictest0-21swapper/000:30:150
384785799280,28cyclictest0-21swapper/700:00:017
3847852992827,1cyclictest0-21swapper/621:20:146
3847852992827,1cyclictest0-21swapper/620:50:156
3847852992823,4cyclictest3915375-21idleruntime-cro21:10:016
384785299280,28cyclictest0-21swapper/623:35:016
384785299280,28cyclictest0-21swapper/622:20:126
3847848992827,0cyclictest0-21swapper/520:40:135
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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