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2026-01-09 - 14:49
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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 Fri Jan 09, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1320999310,3cyclictest23321-21apt-get20:40:111
1321199300,29cyclictest307-21systemd-journal23:30:013
1321099300,29cyclictest25887-21awk21:55:002
1321099300,1cyclictest23009-21cron20:40:002
13211992927,1cyclictest0-21swapper/322:40:013
1321199290,28cyclictest30030-21munin-run20:55:003
13210992927,1cyclictest32091-21cron00:25:012
1321099290,28cyclictest0-21swapper/219:30:102
13209992927,1cyclictest396-21cron22:10:011
1320999290,28cyclictest30005-21cron20:55:001
1320999290,28cyclictest28514-21apt-get22:00:111
1320999290,28cyclictest25096-21apt-get19:35:121
13208992927,1cyclictest307-21systemd-journal21:40:010
1320899290,28cyclictest6585-21apt-get23:30:120
1320899290,28cyclictest20391-21cron20:35:000
1320899290,28cyclictest0-21swapper/021:10:100
1321199280,27cyclictest28514-21apt-get22:00:113
1321199280,0cyclictest23849-21apt-get21:50:133
1321199280,0cyclictest20023-21apt-get22:50:123
1321199280,0cyclictest0-21swapper/321:05:113
1321199280,0cyclictest0-21swapper/321:05:113
1321199280,0cyclictest0-21swapper/319:35:123
1321199280,0cyclictest0-21swapper/300:00:113
13210992826,1cyclictest20421-21munin-run20:35:002
1321099280,0cyclictest0-21swapper/223:10:112
1320999280,27cyclictest0-21swapper/120:45:121
1320999280,0cyclictest12203-21apt-get21:25:111
1320999280,0cyclictest0-21swapper/119:50:131
13208992828,0cyclictest0-21swapper/000:25:120
1320899280,28cyclictest15381-21apt-get22:40:110
1321199270,27cyclictest0-21swapper/319:10:113
1321199270,0cyclictest31961-21apt-get23:15:133
1321199270,0cyclictest0-21swapper/320:00:103
13210992727,0cyclictest32083-21apt-get19:50:132
13210992727,0cyclictest0-21swapper/221:05:122
13210992727,0cyclictest0-21swapper/221:05:112
13209992725,1cyclictest25139-21perf00:10:011
1320999270,27cyclictest0-21swapper/122:20:121
1320999270,27cyclictest0-21swapper/122:10:111
13208992727,0cyclictest0-21swapper/023:15:120
13208992727,0cyclictest0-21swapper/023:10:110
13208992727,0cyclictest0-21swapper/021:00:000
13208992727,0cyclictest0-21swapper/019:50:130
13208992726,1cyclictest29771-21cron00:20:010
13208992726,0cyclictest0-21swapper/000:05:110
13208992725,1cyclictest307-21systemd-journal20:40:000
1320899270,27cyclictest0-21swapper/019:15:120
1320899270,0cyclictest0-21swapper/021:15:100
1320899270,0cyclictest0-21swapper/019:30:100
13211992626,0cyclictest0-21swapper/322:25:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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