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2026-04-26 - 19:52
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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 26, 2026 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
598399320,7cyclictest0-21swapper/210:15:122
598599300,29cyclictest8305-21cron10:40:003
598599300,29cyclictest32120-21cron12:40:023
5985992928,1cyclictest22327-21awk07:45:003
5985992927,1cyclictest621-21dbus-daemon08:35:013
5985992927,1cyclictest10031-21cron09:35:013
598599290,28cyclictest23745-21apt-get08:55:113
598599290,28cyclictest0-21swapper/310:45:143
598599290,28cyclictest0-21swapper/308:20:123
598599290,1cyclictest2711-21apt-get09:20:023
598599290,1cyclictest21123-21apt-get08:50:143
598599290,1cyclictest17615-21sendmail-msp11:00:013
5983992927,1cyclictest0-21swapper/212:25:012
5983992926,2cyclictest6575-21cron08:20:002
5983992926,2cyclictest24365-21sh10:05:012
5979992928,1cyclictest17907-21apt-get11:00:121
597999290,28cyclictest8864-21munin-run11:50:011
597999290,28cyclictest24650-21apt-get10:05:121
597999290,28cyclictest0-21swapper/109:50:011
5975992928,1cyclictest27519-21apt-get11:20:120
597599290,28cyclictest6800-21apt-get11:45:120
597599290,1cyclictest0-21swapper/007:40:010
5985992827,1cyclictest8595-21apt-get10:40:113
598599280,27cyclictest0-21swapper/312:30:133
5983992828,0cyclictest0-21swapper/209:45:132
5983992828,0cyclictest0-21swapper/207:30:112
5983992827,1cyclictest28411-21apt-get09:05:122
5983992826,1cyclictest20828-21cron08:50:002
5983992826,1cyclictest0-21swapper/212:30:542
598399280,0cyclictest18431-21apt-get12:10:142
598399280,0cyclictest0-21swapper/211:55:122
598399280,0cyclictest0-21swapper/207:35:112
5979992828,0cyclictest0-21swapper/111:50:111
5979992827,1cyclictest19988-21taskset09:55:121
5979992826,1cyclictest649-21gdbus12:20:011
5979992826,1cyclictest307-21systemd-journal12:35:011
5979992826,1cyclictest307-21systemd-journal10:25:011
5979992826,1cyclictest28997-21cron10:15:001
5975992828,0cyclictest1540-21apt-get10:25:130
5975992828,0cyclictest0-21swapper/007:40:140
5975992826,1cyclictest301-21cron09:15:000
5985992727,0cyclictest0-21swapper/312:20:143
5985992727,0cyclictest0-21swapper/311:20:123
5985992727,0cyclictest0-21swapper/309:50:123
598599270,27cyclictest12401-21perf09:40:003
5983992727,0cyclictest26088-21apt-get09:00:092
5983992727,0cyclictest11813-21apt-get08:30:122
5983992727,0cyclictest0-21swapper/209:50:132
5983992727,0cyclictest0-21swapper/208:35:122
5983992727,0cyclictest0-21swapper/207:20:112
598399270,27cyclictest0-21swapper/211:50:112
598399270,0cyclictest0-21swapper/207:50:032
5979992727,0cyclictest0-21swapper/112:35:121
5979992727,0cyclictest0-21swapper/112:25:121
5979992727,0cyclictest0-21swapper/112:00:141
5979992727,0cyclictest0-21swapper/108:45:121
5979992727,0cyclictest0-21swapper/108:30:111
5979992727,0cyclictest0-21swapper/107:25:141
5975992727,0cyclictest2135-21apt-get08:10:130
5975992727,0cyclictest0-21swapper/011:40:110
5975992727,0cyclictest0-21swapper/009:50:120
5975992727,0cyclictest0-21swapper/008:55:120
597599270,27cyclictest0-21swapper/012:10:010
597599270,0cyclictest0-21swapper/012:30:130
5985992626,0cyclictest0-21swapper/310:30:123
5983992626,0cyclictest0-21swapper/208:05:132
5979992626,0cyclictest10918-21apt-get10:45:131
5979992626,0cyclictest0-21swapper/111:15:031
5979992626,0cyclictest0-21swapper/107:15:131
5979992625,0cyclictest0-21swapper/108:05:131
5979992624,1cyclictest29618-21turbostat.cron08:00:011
5975992626,0cyclictest0-21swapper/012:20:130
5975992626,0cyclictest0-21swapper/011:05:120
5975992626,0cyclictest0-21swapper/008:40:120
5975992626,0cyclictest0-21swapper/007:45:120
5975992625,1cyclictest1853-21cron08:10:010
5975992623,2cyclictest307-21systemd-journal12:40:020
5985992525,0cyclictest4466-21apt-get11:40:123
5985992523,1cyclictest8235-21cron07:15:023
5983992525,0cyclictest0-21swapper/211:15:122
5983992525,0cyclictest0-21swapper/210:20:102
5983992525,0cyclictest0-21swapper/209:40:122
5983992525,0cyclictest0-21swapper/208:25:122
5983992525,0cyclictest0-21swapper/207:10:122
5979992524,1cyclictest12940-21munin-run07:25:001
5975992525,0cyclictest0-21swapper/009:00:100
5975992525,0cyclictest0-21swapper/008:00:120
5975992523,1cyclictest8303-21sendmail-msp10:40:000
5975992523,1cyclictest17589-21cron11:00:000
5985992424,0cyclictest0-21swapper/308:40:133
5983992424,0cyclictest29839-21apt-get11:25:132
5983992424,0cyclictest0-21swapper/212:25:132
5983992422,1cyclictest15265-21munin-run07:30:002
5979992424,0cyclictest22328-21apt-get10:00:111
5979992424,0cyclictest0-21swapper/107:50:141
5975992422,1cyclictest12406-21munin-run09:40:010
5975992422,1cyclictest0-21swapper/011:15:020
5985992323,0cyclictest25416-21apt-get12:25:133
5985992323,0cyclictest0-21swapper/311:05:123
5985992323,0cyclictest0-21swapper/308:45:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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