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2026-04-23 - 13:37
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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 Apr 23, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37511052252186,21sleep20-21swapper/219:06:072
37511442238177,19sleep30-21swapper/319:06:403
37511282232171,20sleep70-21swapper/719:06:287
37512892231174,19sleep00-21swapper/019:08:460
37511372231178,17sleep50-21swapper/519:06:345
37513402223193,19sleep40-21swapper/419:09:314
37512392218187,20sleep60-21swapper/619:08:046
37511422214186,18sleep10-21swapper/119:06:381
3751571993737,0cyclictest0-21swapper/019:10:100
3751571993737,0cyclictest0-21swapper/019:10:100
3751571993427,4cyclictest3911172-21munin-run23:55:010
375158099330,5cyclictest3799643-21cron20:35:013
3751575993332,1cyclictest0-21swapper/119:15:011
3751575993332,1cyclictest0-21swapper/119:15:011
375157199330,32cyclictest3791340-21sendmail-msp20:20:010
375158099323,1cyclictest18-1pr/ttyS019:14:563
375158099323,1cyclictest18-1pr/ttyS019:14:563
3751580993228,3cyclictest0-21swapper/319:40:133
375158099320,31cyclictest0-21swapper/300:30:123
375158999310,30cyclictest0-21swapper/720:40:017
375158999310,2cyclictest3986178-21systemd-journal22:30:017
375158999310,29cyclictest3866942-21apt-get22:35:147
375158999310,1cyclictest3769443-21apt-get19:40:137
375158399311,30cyclictest0-21swapper/520:10:015
375158199310,2cyclictest3791275-21cron20:20:014
375158099310,30cyclictest0-21swapper/323:45:013
375158099310,30cyclictest0-21swapper/322:49:563
375158099310,30cyclictest0-21swapper/321:00:143
375157599310,3cyclictest3769180-21cat19:40:011
3751589993027,3cyclictest0-21swapper/722:30:137
3751589993026,3cyclictest0-21swapper/700:30:137
375158999300,29cyclictest3922860-21apt-get00:15:127
375158999300,29cyclictest3894781-21apt-get23:25:127
3751587993026,3cyclictest3821919-21cron21:15:016
3751587993022,5cyclictest3925192-21cron00:20:016
375158799300,2cyclictest3933560-21cron00:39:566
375158399300,1cyclictest3860973-21awk22:25:015
3751581993028,1cyclictest0-21swapper/419:25:124
375158099300,29cyclictest3833145-21921:35:013
3751577993028,1cyclictest3816376-21munin-run21:05:012
375157799300,29cyclictest3986178-21systemd-journal23:55:012
375157799300,29cyclictest3914069-21mv00:00:012
375157799300,28cyclictest3766610-21apt-get19:35:132
3751575993028,1cyclictest0-21swapper/122:10:121
3751571993029,1cyclictest18-1pr/ttyS019:45:010
3751571993028,1cyclictest0-21swapper/021:35:010
375157199300,29cyclictest3986178-21systemd-journal23:40:010
3751589992928,1cyclictest0-21swapper/721:50:017
3751589992927,2cyclictest3763831-21apt-get19:30:137
3751589992926,3cyclictest0-21swapper/723:35:137
375158999290,28cyclictest3855805-21apt-get22:15:137
375158999290,28cyclictest0-21swapper/723:17:017
375158999290,28cyclictest0-21swapper/722:55:137
375158999290,28cyclictest0-21swapper/722:10:127
375158999290,28cyclictest0-21swapper/720:45:127
375158999290,28cyclictest0-21swapper/700:20:137
3751587992928,1cyclictest78-21ksoftirqd/620:15:136
3751587992928,1cyclictest0-21swapper/619:55:136
3751587992927,1cyclictest3833147-21sh21:35:016
3751587992927,1cyclictest0-21swapper/600:30:126
3751587992927,1cyclictest0-21swapper/600:20:126
375158799290,29cyclictest0-21swapper/622:50:016
375158799290,28cyclictest0-21swapper/619:40:136
375158799290,28cyclictest0-21swapper/600:25:126
375158799290,1cyclictest3805670-21apt-get20:45:116
3751583992928,0cyclictest0-21swapper/523:45:045
375158399290,28cyclictest3797305-21apt-get20:30:125
375158399290,28cyclictest0-21swapper/520:50:125
375158399290,28cyclictest0-21swapper/520:35:135
375158399290,1cyclictest3780223-21appstreamcli20:00:045
3751581992927,1cyclictest3872515-21apt-get22:45:124
375158199290,28cyclictest0-21swapper/423:35:134
375158199290,28cyclictest0-21swapper/421:45:124
375158199290,28cyclictest0-21swapper/419:35:124
375158199290,28cyclictest0-21swapper/400:00:064
375158199290,1cyclictest3777777-21apt-get19:55:144
3751580992927,2cyclictest0-21swapper/320:15:123
3751580992927,1cyclictest3766156-21cron19:35:013
3751580992927,1cyclictest0-21swapper/321:15:133
3751580992927,1cyclictest0-21swapper/300:35:123
3751580992926,2cyclictest3925203-21cron00:20:013
375158099290,28cyclictest0-21swapper/323:35:133
375158099290,28cyclictest0-21swapper/320:00:133
375158099290,28cyclictest0-21swapper/319:55:133
375158099290,1cyclictest0-21swapper/322:15:133
3751577992927,1cyclictest0-21swapper/220:15:012
3751577992925,4cyclictest0-21swapper/200:24:562
375157799290,28cyclictest0-21swapper/222:45:122
375157799290,28cyclictest0-21swapper/222:40:142
375157799290,28cyclictest0-21swapper/222:00:132
375157799290,28cyclictest0-21swapper/220:25:112
375157799290,28cyclictest0-21swapper/220:00:032
375157799290,28cyclictest0-21swapper/219:50:132
375157799290,1cyclictest3861383-21apt-get22:25:132
3751575992928,1cyclictest33-21ksoftirqd/100:30:121
3751575992928,1cyclictest291irq_work/120:35:011
3751575992927,1cyclictest0-21swapper/120:00:041
375157599290,29cyclictest0-21swapper/123:14:561
375157599290,28cyclictest0-21swapper/122:40:141
375157599290,28cyclictest0-21swapper/121:50:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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