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2026-04-19 - 11:58
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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 Sun Apr 19, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
406499330,30cyclictest12400-21cron21:45:003
406399320,19cyclictest0-21swapper/220:00:202
406399310,30cyclictest31080-21cron22:25:002
405799311,29cyclictest1-21systemd22:15:010
406499300,29cyclictest649-21gdbus23:55:013
405899300,29cyclictest307-21systemd-journal20:45:011
405799300,29cyclictest16225-21cron20:45:010
406499290,28cyclictest0-21swapper/320:35:143
406399290,28cyclictest5141-21apt-get21:30:022
406399290,28cyclictest29574-21apt-get23:30:122
406399290,28cyclictest21943-21apt-get23:15:012
406399290,28cyclictest21747-21munin-run22:05:012
406399290,1cyclictest0-21swapper/221:55:002
4058992927,1cyclictest307-21systemd-journal22:45:011
405899290,28cyclictest2520-21apt-get20:15:121
405899290,28cyclictest0-21swapper/122:45:121
4057992927,2cyclictest7994-21cron22:45:010
4057992927,1cyclictest28755-21sh22:20:010
4057992926,2cyclictest18532-21cron20:50:000
405799290,28cyclictest0-21swapper/022:45:120
4064992827,1cyclictest31898-21apt-get23:35:123
4064992827,1cyclictest0-21swapper/319:55:113
406499280,27cyclictest0-21swapper/320:20:113
4063992827,1cyclictest11567-21apt-get19:25:122
4058992828,0cyclictest0-21swapper/123:00:131
4058992828,0cyclictest0-21swapper/120:10:111
4058992827,1cyclictest28733-21cron22:20:011
4058992826,1cyclictest18536-21cron20:50:001
405899280,0cyclictest0-21swapper/121:45:121
4057992828,0cyclictest32614-21apt-get20:10:110
4057992828,0cyclictest15265-21apt-get23:00:130
405799280,0cyclictest0-21swapper/020:15:120
405799280,0cyclictest0-21swapper/019:30:200
4064992727,0cyclictest0-21swapper/322:25:113
4064992726,1cyclictest17331-21munin-run23:05:013
4058992727,0cyclictest0-21swapper/120:05:131
405799273,2cyclictest151rcu_preempt22:20:210
4057992727,0cyclictest0-21swapper/020:05:130
4064992626,0cyclictest0-21swapper/321:55:123
4064992626,0cyclictest0-21swapper/321:05:123
4064992625,1cyclictest34-21ksoftirqd/319:35:123
4064992625,1cyclictest16253-21munin-run20:45:013
4064992625,0cyclictest0-21swapper/321:00:093
4064992624,1cyclictest621-21dbus-daemon20:05:013
4058992626,0cyclictest0-21swapper/123:45:101
4058992625,0cyclictest0-21swapper/120:30:091
4058992624,1cyclictest23258-21sendmail-msp21:00:001
4057992626,0cyclictest0-21swapper/023:45:100
4057992626,0cyclictest0-21swapper/020:30:100
4057992624,1cyclictest23256-21cron21:00:000
4064992525,0cyclictest0-21swapper/300:00:003
4063992525,0cyclictest0-21swapper/220:45:112
4063992524,1cyclictest0-21swapper/200:05:012
4058992525,0cyclictest0-21swapper/123:40:121
4057992525,0cyclictest0-21swapper/023:40:120
4057992523,1cyclictest20865-21cron20:55:000
4064992424,0cyclictest0-21swapper/323:05:123
4064992424,0cyclictest0-21swapper/320:05:143
4064992424,0cyclictest0-21swapper/319:45:013
4064992424,0cyclictest0-21swapper/319:45:013
4064992423,0cyclictest0-21swapper/321:30:123
4063992424,0cyclictest0-21swapper/222:45:122
4063992424,0cyclictest0-21swapper/220:35:142
4063992424,0cyclictest0-21swapper/220:25:112
4063992424,0cyclictest0-21swapper/219:35:122
4063992424,0cyclictest0-21swapper/200:20:122
4063992423,1cyclictest0-21swapper/222:45:012
4058992424,0cyclictest0-21swapper/100:10:121
4058992423,1cyclictest20854-21cron20:55:001
4058992423,1cyclictest0-21swapper/121:05:001
4058992423,0cyclictest31368-21apt-get22:25:121
4057992424,0cyclictest0-21swapper/000:10:120
4057992423,1cyclictest25618-21http21:05:000
4064992323,0cyclictest8276-21apt-get22:45:123
4064992323,0cyclictest0-21swapper/320:45:113
4064992323,0cyclictest0-21swapper/319:45:123
4064992323,0cyclictest0-21swapper/319:20:123
4064992320,2cyclictest307-21systemd-journal20:15:013
406399236,4cyclictest0-21swapper/221:29:542
4063992323,0cyclictest0-21swapper/223:45:102
4063992323,0cyclictest0-21swapper/221:20:122
4063992323,0cyclictest0-21swapper/220:55:132
4058992323,0cyclictest0-21swapper/119:30:201
4057992323,0cyclictest0-21swapper/022:25:120
4057992322,1cyclictest11842-21apt-get20:35:140
4057992319,2cyclictest12399-21cron21:45:000
4064992222,0cyclictest0-21swapper/322:20:123
4064992222,0cyclictest0-21swapper/321:25:013
406399225,4cyclictest0-21swapper/221:18:422
4063992222,0cyclictest4872-21apt-get20:20:112
4063992222,0cyclictest0-21swapper/223:00:132
4058992222,0cyclictest0-21swapper/120:35:141
4058992220,1cyclictest621-21dbus-daemon19:15:001
4058992219,1cyclictest307-21systemd-journal21:45:001
4057992220,1cyclictest20276-21cron00:20:010
4063992119,2cyclictest26967-21idleruntime-cro23:25:012
4058992120,1cyclictest20271-21cron00:20:011
4057992119,1cyclictest8521-21cron23:55:010
4064992020,0cyclictest0-21swapper/319:10:123
4063992020,0cyclictest0-21swapper/219:50:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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