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2026-04-15 - 09:02
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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 Wed Apr 15, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3194799300,29cyclictest621-21dbus-daemon19:55:013
31942993028,1cyclictest621-21dbus-daemon20:20:012
31933993028,1cyclictest8472-21munin-run21:45:020
31933993027,2cyclictest13743-21sh19:40:000
3193399300,29cyclictest20771-21sh19:55:010
3194299290,28cyclictest4165-21munin-run19:20:012
3194299290,28cyclictest0-21swapper/220:20:122
3194299290,1cyclictest22706-21apt-get23:25:022
3193899290,28cyclictest0-21swapper/120:55:121
3193399290,28cyclictest25934-21apt-get00:40:010
3193399290,1cyclictest12240-21apt-get20:45:130
3193399290,0cyclictest0-21swapper/000:10:130
31947992827,1cyclictest0-21swapper/321:10:133
31947992827,0cyclictest0-21swapper/322:00:123
31947992826,1cyclictest307-21systemd-journal19:40:003
3194799280,0cyclictest0-21swapper/321:20:113
3194799280,0cyclictest0-21swapper/320:45:133
3194799280,0cyclictest0-21swapper/300:15:123
3194799280,0cyclictest0-21swapper/300:10:133
31942992828,0cyclictest19529-21apt-get21:00:122
3194299280,28cyclictest0-21swapper/223:15:142
3194299280,27cyclictest0-21swapper/220:10:122
3194299280,0cyclictest0-21swapper/220:05:122
3193899280,28cyclictest0-21swapper/123:30:121
3193899280,27cyclictest0-21swapper/100:20:131
31933992828,0cyclictest0-21swapper/021:10:130
3193399280,0cyclictest0-21swapper/021:20:110
31947992727,0cyclictest8468-21perf21:45:013
31947992727,0cyclictest0-21swapper/322:55:123
31947992726,0cyclictest0-21swapper/323:30:123
3194799270,0cyclictest0-21swapper/320:35:133
31942992727,0cyclictest0-21swapper/223:10:022
31942992727,0cyclictest0-21swapper/221:15:142
31942992727,0cyclictest0-21swapper/221:10:142
3194299270,27cyclictest0-21swapper/220:55:012
3194299270,0cyclictest0-21swapper/220:30:102
31938992727,0cyclictest13371-21apt-get21:55:131
31938992727,0cyclictest0-21swapper/122:45:131
31938992727,0cyclictest0-21swapper/122:05:111
31938992727,0cyclictest0-21swapper/121:00:121
31938992727,0cyclictest0-21swapper/100:35:101
3193899270,0cyclictest0-21swapper/121:45:121
31933992727,0cyclictest15715-21apt-get22:00:120
31933992725,1cyclictest0-21swapper/020:55:120
3193399270,27cyclictest0-21swapper/023:40:120
3193399270,27cyclictest0-21swapper/000:05:010
3194299269,4cyclictest0-21swapper/221:35:182
31942992626,0cyclictest28219-21apt-get23:35:112
31942992626,0cyclictest0-21swapper/223:45:132
31942992626,0cyclictest0-21swapper/223:00:122
31942992626,0cyclictest0-21swapper/222:35:112
31942992626,0cyclictest0-21swapper/221:30:132
31942992624,1cyclictest27114-21cron22:25:012
31942992624,1cyclictest27114-21cron22:25:012
31938992626,0cyclictest26852-21apt-get21:15:141
31938992626,0cyclictest0-21swapper/122:55:121
31938992626,0cyclictest0-21swapper/121:50:131
31938992626,0cyclictest0-21swapper/121:05:131
31938992625,1cyclictest12241-21apt-get00:10:131
31933992626,0cyclictest0-21swapper/023:30:120
31933992626,0cyclictest0-21swapper/021:45:120
31933992626,0cyclictest0-21swapper/020:35:130
31933992625,1cyclictest8947-21apt-get22:55:120
31933992625,1cyclictest0-21swapper/021:55:120
31933992624,1cyclictest11048-21apt-get21:50:120
31947992525,0cyclictest0-21swapper/323:45:133
31947992525,0cyclictest0-21swapper/321:55:123
31947992525,0cyclictest0-21swapper/321:45:123
31947992525,0cyclictest0-21swapper/320:55:123
31947992524,0cyclictest0-21swapper/319:30:123
31942992525,0cyclictest0-21swapper/219:45:012
31942992523,1cyclictest7208-21perf00:00:012
31938992525,0cyclictest14561-21apt-get00:15:121
31938992525,0cyclictest0-21swapper/119:30:121
31938992525,0cyclictest0-21swapper/119:10:111
31938992524,1cyclictest9356-21munin-run20:40:001
31933992525,0cyclictest0-21swapper/023:45:130
31933992525,0cyclictest0-21swapper/019:30:120
31933992525,0cyclictest0-21swapper/000:20:130
31933992523,1cyclictest307-21systemd-journal22:30:010
31947992424,0cyclictest0-21swapper/322:40:133
31947992424,0cyclictest0-21swapper/321:50:123
31947992424,0cyclictest0-21swapper/300:20:133
31947992423,1cyclictest21548-21apt-get00:30:133
31947992423,1cyclictest1718-21munin-run22:40:013
31947992422,1cyclictest29427-21cron22:30:023
3194299247,13cyclictest151rcu_preempt19:54:322
31942992424,0cyclictest20407-21apt-get22:10:102
31942992424,0cyclictest0-21swapper/223:30:122
31942992424,0cyclictest0-21swapper/219:45:132
31938992424,0cyclictest29500-21apt-get21:20:111
31938992424,0cyclictest0-21swapper/121:35:121
31938992424,0cyclictest0-21swapper/119:45:131
31933992424,0cyclictest1983-21apt-get22:40:140
31933992423,1cyclictest0-21swapper/022:40:010
31942992322,1cyclictest15933-21apt-get23:10:122
31938992323,0cyclictest0-21swapper/122:50:131
31938992323,0cyclictest0-21swapper/120:45:131
31938992323,0cyclictest0-21swapper/100:30:131
31933992323,0cyclictest0-21swapper/000:30:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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