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2025-12-08 - 13:16
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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 rackeslot5.osadl.org (updated Mon Dec 08, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
654699320,31cyclictest1590-21munin-run22:25:002
654699320,31cyclictest0-21swapper/221:05:152
6546993128,2cyclictest28199-21idleruntime-cro00:30:012
654599310,30cyclictest13508-21cron19:25:011
6551993013,0cyclictest151rcu_preempt22:42:363
654599300,29cyclictest30122-21turbostat.cron20:00:011
6551992927,1cyclictest6211-21cron22:35:003
6551992927,1cyclictest5946-21munin-run21:25:003
6551992927,1cyclictest0-21swapper/321:30:003
6551992912,3cyclictest151rcu_preempt22:08:593
6551992912,0cyclictest151rcu_preempt21:01:473
655199290,28cyclictest28067-21apt-get19:55:133
655199290,28cyclictest18193-21munin-run19:35:013
655199290,28cyclictest15546-21cron22:55:013
655199290,28cyclictest13211-21apt-get21:40:133
655199290,28cyclictest0-21swapper/300:00:163
654699290,28cyclictest0-21swapper/221:40:122
654699290,1cyclictest7088-21sendmail-msp20:20:012
654599290,28cyclictest0-21swapper/120:10:161
6544992928,1cyclictest25441-21apt-get19:50:150
654499290,28cyclictest16429-21apt-get20:40:020
654499290,28cyclictest0-21swapper/022:30:130
654499290,1cyclictest25183-21munin-run19:50:010
654499290,1cyclictest21366-21cron20:50:000
654499290,1cyclictest0-21swapper/023:25:150
6551992828,0cyclictest0-21swapper/322:55:143
655199280,27cyclictest9723-21apt-get23:50:143
655199280,0cyclictest0-21swapper/323:00:123
655199280,0cyclictest0-21swapper/300:15:143
6546992828,0cyclictest0-21swapper/220:55:142
6546992827,1cyclictest26923-21apt-get21:00:132
654699280,28cyclictest0-21swapper/200:30:122
654699280,27cyclictest0-21swapper/221:30:142
654699280,1cyclictest20554-21munin-run23:05:012
654699280,0cyclictest0-21swapper/223:25:152
654699280,0cyclictest0-21swapper/221:50:132
6545992826,1cyclictest1237-21awk21:15:011
654599280,28cyclictest0-21swapper/121:15:131
654599280,28cyclictest0-21swapper/120:30:121
654599280,27cyclictest0-21swapper/123:50:011
654599280,0cyclictest0-21swapper/123:30:031
654599280,0cyclictest0-21swapper/120:25:131
6544992827,1cyclictest21953-21apt-get20:50:120
6544992827,1cyclictest0-21swapper/021:35:110
6544992827,0cyclictest18448-21apt-get19:35:140
654499280,0cyclictest2705-21apt-get20:10:150
654499280,0cyclictest0-21swapper/020:30:120
6551992726,1cyclictest8540-21apt-get21:30:143
6551992726,1cyclictest28483-21apt-get00:30:113
655199270,27cyclictest0-21swapper/319:20:133
6546992727,0cyclictest0-21swapper/220:50:132
6546992727,0cyclictest0-21swapper/219:10:142
6546992727,0cyclictest0-21swapper/200:20:122
6546992727,0cyclictest0-21swapper/200:05:132
6546992725,1cyclictest21209-21cron00:15:012
6546992725,1cyclictest0-21swapper/219:40:012
654699270,0cyclictest0-21swapper/220:10:162
6545992727,0cyclictest0-21swapper/120:15:151
6545992725,1cyclictest0-21swapper/121:00:001
6544992726,0cyclictest0-21swapper/022:20:130
654499270,27cyclictest0-21swapper/023:05:190
654499270,0cyclictest0-21swapper/022:10:120
654499270,0cyclictest0-21swapper/021:55:130
654499270,0cyclictest0-21swapper/021:55:130
6551992626,0cyclictest13796-21apt-get19:25:133
6551992626,0cyclictest0-21swapper/321:05:153
6551992626,0cyclictest0-21swapper/300:25:163
6546992626,0cyclictest0-21swapper/221:25:122
6546992626,0cyclictest0-21swapper/219:40:132
6546992626,0cyclictest0-21swapper/219:15:142
6545992626,0cyclictest0-21swapper/121:40:121
6545992624,1cyclictest29250-21cron22:15:011
6545992624,1cyclictest14275-21cat00:00:011
6544992626,0cyclictest0-21swapper/020:35:140
6544992624,1cyclictest21232-21munin-run00:15:000
6551992525,0cyclictest19329-21apt-get20:45:143
6551992525,0cyclictest0-21swapper/322:15:133
654699254,20cyclictest5641-21timerwakeupswit22:30:222
6546992525,0cyclictest0-21swapper/221:45:142
654699251,23cyclictest0-21swapper/223:00:012
6545992525,0cyclictest30128-21apt-get23:25:141
6545992525,0cyclictest0-21swapper/123:20:131
6545992525,0cyclictest0-21swapper/123:10:121
6545992525,0cyclictest0-21swapper/100:35:131
6545992523,1cyclictest10610-21munin-run21:35:001
6544992525,0cyclictest0-21swapper/023:55:140
6551992424,0cyclictest0-21swapper/322:25:133
6551992424,0cyclictest0-21swapper/321:15:133
6551992422,1cyclictest9420-21cron20:25:003
6551992422,1cyclictest9420-21cron20:25:003
6546992424,0cyclictest0-21swapper/223:35:132
6546992424,0cyclictest0-21swapper/223:35:122
6546992424,0cyclictest0-21swapper/219:50:152
6545992424,0cyclictest0-21swapper/120:20:151
6545992424,0cyclictest0-21swapper/120:20:151
6544992424,0cyclictest0-21swapper/000:05:130
6551992323,0cyclictest30414-21apt-get20:00:133
6551992323,0cyclictest0-21swapper/300:20:123
6551992322,1cyclictest11737-21cron20:30:003
6546992323,0cyclictest0-21swapper/200:35:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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