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2026-09-21 - 17:51
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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 50 highest latencies:
System rackeslot5.osadl.org (updated Mon Sep 21, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1714993333,0cyclictest0-21swapper/110:50:131
1714993331,2cyclictest0-21swapper/109:30:121
172299300,29cyclictest7134-21apt-get11:55:113
172299300,29cyclictest20865-21apt-get11:15:133
171699300,29cyclictest15088-21cron09:54:592
1714993029,1cyclictest1-21systemd07:40:011
1714993029,1cyclictest0-21swapper/111:25:121
1722992928,1cyclictest31205-21apt-get09:20:123
172299290,28cyclictest30233-21apt-get11:35:153
1716992927,1cyclictest10736-21apt-get09:45:112
171699290,28cyclictest23739-21apt-get12:30:112
171699290,28cyclictest0-21swapper/212:20:122
1714992927,1cyclictest25092-21munin-run08:00:021
171499290,1cyclictest32375-21cron08:15:001
1713992927,1cyclictest32255-21cron11:40:010
1722992826,1cyclictest0-21swapper/308:55:013
1722992821,1cyclictest307-21systemd-journal09:00:003
172299280,28cyclictest0-21swapper/308:45:133
172299280,27cyclictest32331-21apt-get10:30:133
172299280,27cyclictest24161-21apt-get09:05:123
172299280,27cyclictest23007-21apt-get07:55:143
1716992827,0cyclictest9239-21apt-get10:50:122
171699280,0cyclictest0-21swapper/209:05:132
1714992828,0cyclictest0-21swapper/111:20:131
171499280,0cyclictest0-21swapper/110:40:121
171399280,27cyclictest0-21swapper/009:40:020
1722992727,0cyclictest0-21swapper/312:30:123
1722992727,0cyclictest0-21swapper/309:30:133
1722992727,0cyclictest0-21swapper/307:15:123
172299270,27cyclictest0-21swapper/312:00:133
172299270,0cyclictest2487-21apt-get11:45:113
172299270,0cyclictest0-21swapper/309:10:123
1716992727,0cyclictest24686-21apt-get10:15:142
171699270,0cyclictest21413-21apt-get12:25:102
171699270,0cyclictest0-21swapper/209:35:122
1714992727,0cyclictest0-21swapper/112:20:111
1714992727,0cyclictest0-21swapper/110:45:131
1714992726,1cyclictest10482-21munin-run09:45:001
171499270,0cyclictest0-21swapper/110:15:131
171499270,0cyclictest0-21swapper/107:10:121
1713992727,0cyclictest0-21swapper/011:00:110
1713992727,0cyclictest0-21swapper/007:50:110
1713992726,1cyclictest29423-21awk10:25:000
171399270,0cyclictest0-21swapper/011:40:120
171399270,0cyclictest0-21swapper/007:25:130
1722992626,0cyclictest32572-21apt-get11:40:133
1722992626,0cyclictest15382-21apt-get09:55:113
1722992626,0cyclictest0-21swapper/310:45:133
1722992624,1cyclictest11940-21cron08:40:013
1716992626,0cyclictest0-21swapper/211:55:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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