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2026-03-13 - 14:37
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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 Fri Mar 13, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24982993331,1cyclictest880-21awk21:45:013
2498299311,29cyclictest4155-21awk19:35:013
2497399310,30cyclictest31244-21cron22:50:001
2497899300,29cyclictest19819-21cron23:35:012
24982992927,1cyclictest30946-21cron21:40:003
24982992927,1cyclictest0-21swapper/320:30:023
2498299290,28cyclictest0-21swapper/321:30:123
24978992927,1cyclictest621-21dbus-daemon19:40:012
2497899290,28cyclictest0-21swapper/222:50:102
2497399290,28cyclictest15472-21apt-get23:25:131
2496999290,28cyclictest0-21swapper/023:35:100
2496999290,1cyclictest11137-21awk19:50:020
24982992827,0cyclictest12857-21apt-get22:10:103
2498299280,28cyclictest26022-21perf21:29:593
2498299280,28cyclictest0-21swapper/322:40:123
2498299280,27cyclictest0-21swapper/321:50:123
2498299280,27cyclictest0-21swapper/320:15:133
2498299280,0cyclictest0-21swapper/323:35:113
24978992828,0cyclictest0-21swapper/220:20:142
2497899280,1cyclictest0-21swapper/219:45:012
2497899280,0cyclictest0-21swapper/200:05:132
24973992828,0cyclictest6109-21apt-get23:05:121
24973992828,0cyclictest0-21swapper/122:30:111
24973992828,0cyclictest0-21swapper/119:55:131
24973992826,1cyclictest16687-21sh21:10:011
2497399280,0cyclictest3497-21apt-get21:50:111
2497399280,0cyclictest0-21swapper/122:50:111
2497399280,0cyclictest0-21swapper/100:35:141
24969992828,0cyclictest0-21swapper/023:15:120
24969992828,0cyclictest0-21swapper/020:30:020
2496999280,27cyclictest0-21swapper/019:30:130
2496999280,0cyclictest7609-21apt-get20:50:110
2496999280,0cyclictest29880-21apt-get19:20:090
24982992727,0cyclictest0-21swapper/322:15:103
2498299270,0cyclictest0-21swapper/320:00:113
24978992727,0cyclictest8160-21apt-get22:00:112
24978992727,0cyclictest0-21swapper/221:45:112
24978992724,2cyclictest18178-21awk20:05:012
24973992727,0cyclictest0-21swapper/122:55:121
24973992727,0cyclictest0-21swapper/122:30:011
24973992727,0cyclictest0-21swapper/121:55:121
24973992726,1cyclictest211rcuc/123:05:011
24973992726,1cyclictest2118-21apt-get00:05:141
2497399270,27cyclictest0-21swapper/120:10:101
2497399270,0cyclictest0-21swapper/123:10:111
24969992727,0cyclictest0-21swapper/020:00:120
24969992727,0cyclictest0-21swapper/019:35:120
24969992727,0cyclictest0-21swapper/019:10:120
24969992725,1cyclictest0-21swapper/023:25:000
2496999270,27cyclictest0-21swapper/023:30:110
2496999270,0cyclictest2386-21perf20:40:000
2496999270,0cyclictest11167-21perf00:25:020
24982992626,0cyclictest0-21swapper/323:20:123
24982992626,0cyclictest0-21swapper/323:20:003
24982992626,0cyclictest0-21swapper/321:45:113
24982992626,0cyclictest0-21swapper/319:45:123
24982992625,1cyclictest11985-21sendmail-msp21:00:003
24973992626,0cyclictest0-21swapper/120:45:121
24973992625,1cyclictest14916-21munin-run22:15:001
24973992624,1cyclictest29847-21munin-run20:30:011
24969992626,0cyclictest131ksoftirqd/022:05:010
24969992626,0cyclictest0-21swapper/021:30:100
24982992523,1cyclictest1863-21munin-run00:05:013
24978992525,0cyclictest0-21swapper/220:25:122
24978992525,0cyclictest0-21swapper/200:30:132
24973992525,0cyclictest0-21swapper/119:50:121
24973992525,0cyclictest0-21swapper/119:40:121
24973992523,1cyclictest0-21swapper/119:15:211
24969992525,0cyclictest0-21swapper/022:25:110
24969992524,0cyclictest0-21swapper/022:10:110
24982992424,0cyclictest0-21swapper/320:50:123
24982992424,0cyclictest0-21swapper/300:30:133
24982992423,1cyclictest17792-21apt-get23:30:123
24978992424,0cyclictest0-21swapper/223:00:112
24978992424,0cyclictest0-21swapper/221:05:112
24978992423,1cyclictest13152-21apt-get23:20:132
2497899240,13cyclictest0-21swapper/220:18:122
24973992422,1cyclictest621-21dbus-daemon22:25:011
24969992424,0cyclictest0-21swapper/022:40:120
24969992424,0cyclictest0-21swapper/019:55:130
24978992323,0cyclictest0-21swapper/221:55:122
24978992323,0cyclictest0-21swapper/220:05:132
24978992323,0cyclictest0-21swapper/200:35:132
24973992323,0cyclictest0-21swapper/119:35:111
24969992323,0cyclictest0-21swapper/021:40:110
24969992323,0cyclictest0-21swapper/020:55:110
24969992323,0cyclictest0-21swapper/020:15:130
24982992222,0cyclictest0-21swapper/323:45:123
24982992222,0cyclictest0-21swapper/322:46:543
24982992222,0cyclictest0-21swapper/321:00:123
24982992221,0cyclictest0-21swapper/322:20:113
24982992220,1cyclictest18124-21perf00:40:013
24978992222,0cyclictest4726-21apt-get20:45:012
24978992222,0cyclictest11430-21apt-get00:25:162
24978992222,0cyclictest0-21swapper/223:25:142
24973992222,0cyclictest0-21swapper/123:50:121
24973992222,0cyclictest0-21swapper/121:35:111
24969992222,0cyclictest22164-21apt-get22:30:110
24969992222,0cyclictest0-21swapper/023:45:120
24969992220,1cyclictest621-21dbus-daemon21:39:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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