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2025-11-19 - 12:37
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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 Nov 19, 2025 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7489994614,0cyclictest151rcu_preempt23:58:363
7489993315,0cyclictest16982-21kworker/3:200:20:573
748899300,29cyclictest29319-21apt-get00:30:132
748599300,0cyclictest0-21swapper/122:00:161
748499300,29cyclictest17577-21cron20:39:590
7489992927,1cyclictest28763-21munin-run00:30:013
748999290,28cyclictest25796-21apt-get22:05:143
748999290,28cyclictest0-21swapper/300:05:143
7488992928,1cyclictest19417-21cron00:10:012
7488992927,1cyclictest10597-21cron20:25:012
748899290,28cyclictest26695-21apt-get00:25:142
748899290,28cyclictest20572-21apt-get20:45:142
748899290,28cyclictest0-21swapper/200:15:152
7485992927,1cyclictest2960-21cron23:35:011
748599290,28cyclictest6500-21sh21:25:001
748599290,28cyclictest0-21swapper/121:45:141
748499290,28cyclictest0-21swapper/023:45:010
748999280,27cyclictest0-21swapper/321:10:123
748999280,0cyclictest15543-21apt-get20:35:143
7488992828,0cyclictest6214-21apt-get20:15:182
748899280,28cyclictest0-21swapper/221:15:142
748499285,23cyclictest11645-21kworker/0:221:59:580
7484992828,0cyclictest0-21swapper/021:30:150
7484992827,0cyclictest22026-21apt-get00:15:150
7484992826,1cyclictest0-21swapper/022:20:000
748499280,27cyclictest0-21swapper/020:55:140
748499280,0cyclictest0-21swapper/023:00:150
7489992727,0cyclictest0-21swapper/300:30:023
748999270,0cyclictest0-21swapper/319:20:153
7488992727,0cyclictest0-21swapper/219:25:142
748899270,27cyclictest0-21swapper/221:55:132
7485992727,0cyclictest0-21swapper/122:55:141
7485992727,0cyclictest0-21swapper/121:00:131
7485992727,0cyclictest0-21swapper/120:45:141
7485992727,0cyclictest0-21swapper/100:05:011
7484992727,0cyclictest326-21apt-get22:20:140
7484992727,0cyclictest0-21swapper/022:55:130
7484992727,0cyclictest0-21swapper/020:15:160
7489992626,0cyclictest0-21swapper/322:20:153
7488992626,0cyclictest0-21swapper/222:05:142
7488992626,0cyclictest0-21swapper/221:05:142
7488992624,1cyclictest599-21systemd-logind00:00:012
7488992624,1cyclictest14699-21cron19:25:012
7488992623,2cyclictest303-21systemd-journal21:45:002
7485992626,0cyclictest0-21swapper/119:15:151
7485992624,1cyclictest31365-21cron20:00:001
7485992624,1cyclictest24078-21sendmail-msp00:20:011
7484992626,0cyclictest31660-21apt-get20:00:170
7484992626,0cyclictest0-21swapper/020:40:160
7484992624,2cyclictest626-21gdbus20:30:000
748999257,0cyclictest15063-21kworker/3:021:55:243
7489992525,0cyclictest0-21swapper/322:35:143
7488992525,0cyclictest25218-21apt-get20:55:132
7488992525,0cyclictest0-21swapper/220:00:162
7488992525,0cyclictest0-21swapper/219:35:152
7488992525,0cyclictest0-21swapper/219:10:122
7485992525,0cyclictest1557-21apt-get20:05:141
7485992525,0cyclictest0-21swapper/121:30:151
7484992525,0cyclictest0-21swapper/023:55:150
7484992525,0cyclictest0-21swapper/023:10:210
7484992525,0cyclictest0-21swapper/019:35:140
7484992524,1cyclictest22637-21munin-run20:50:000
7484992523,1cyclictest30763-21perf23:25:020
7489992424,0cyclictest16977-21apt-get22:55:143
7489992424,0cyclictest0-21swapper/322:40:143
7489992424,0cyclictest0-21swapper/322:10:143
7489992424,0cyclictest0-21swapper/321:50:153
7489992424,0cyclictest0-21swapper/321:50:153
7489992424,0cyclictest0-21swapper/321:40:133
7489992424,0cyclictest0-21swapper/319:40:143
7489992424,0cyclictest0-21swapper/300:00:143
7488992424,0cyclictest0-21swapper/220:10:162
7488992424,0cyclictest0-21swapper/219:30:172
7485992424,0cyclictest0-21swapper/123:00:151
7485992424,0cyclictest0-21swapper/120:55:131
7485992424,0cyclictest0-21swapper/120:50:141
7485992424,0cyclictest0-21swapper/120:40:161
7485992424,0cyclictest0-21swapper/120:25:121
7485992424,0cyclictest0-21swapper/120:15:161
7485992423,0cyclictest3890-21apt-get20:10:171
7484992424,0cyclictest0-21swapper/020:10:160
7484992423,1cyclictest28739-21apt-get00:30:030
7484992423,1cyclictest18749-21apt-get21:50:150
7484992423,1cyclictest18749-21apt-get21:50:150
7489992322,1cyclictest32533-21munin-run22:20:003
7489992320,2cyclictest26058-21awk23:15:013
7488992323,0cyclictest0-21swapper/220:30:142
7488992322,1cyclictest2402-21cron22:25:002
7488992321,1cyclictest17617-21munin-run20:40:012
7485992323,0cyclictest0-21swapper/123:15:151
7485992323,0cyclictest0-21swapper/121:55:141
7484992323,0cyclictest0-21swapper/021:15:130
7484992323,0cyclictest0-21swapper/019:45:150
7484992322,1cyclictest10635-21munin-run20:25:000
7489992220,1cyclictest7078-21apt-get22:35:003
7488992222,0cyclictest26350-21apt-get23:15:152
7488992222,0cyclictest0-21swapper/222:50:132
7485992222,0cyclictest0-21swapper/123:20:141
7485992222,0cyclictest0-21swapper/119:25:151
7484992222,0cyclictest0-21swapper/023:05:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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