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2025-12-02 - 04:56
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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 Tue Dec 02, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
232699310,30cyclictest1719-21cron21:25:012
2331993028,1cyclictest25880-21lockfile-create20:00:023
232299300,29cyclictest23242-21sh23:20:001
232299300,29cyclictest1118-21apt-get20:15:141
2331992927,1cyclictest27661-21cron22:20:013
232699290,28cyclictest0-21swapper/220:45:132
2322992928,1cyclictest613-21in:imuxsock00:35:011
2322992928,1cyclictest0-21swapper/100:15:131
2322992927,1cyclictest609-21dbus-daemon00:30:011
231799290,28cyclictest17752-21apt-get20:50:140
231799290,1cyclictest20510-21kworker/0:121:30:000
2331992827,1cyclictest6928-21sh19:20:023
2331992827,0cyclictest26876-21apt-get00:35:143
2331992826,1cyclictest25592-21awk23:25:013
233199280,1cyclictest13404-21perf21:50:003
233199280,0cyclictest0-21swapper/322:20:143
2326992828,0cyclictest0-21swapper/221:00:132
2326992828,0cyclictest0-21swapper/219:45:132
2326992827,1cyclictest0-21swapper/222:55:142
232699280,0cyclictest10455-21apt-get20:35:122
2322992827,1cyclictest16564-21apt-get23:05:141
232299280,28cyclictest0-21swapper/120:55:161
232299280,0cyclictest0-21swapper/119:35:021
231799280,1cyclictest21963-21munin-run00:25:000
2331992727,0cyclictest19627-21perf00:20:013
2331992727,0cyclictest0-21swapper/319:50:143
2331992727,0cyclictest0-21swapper/319:50:143
2331992725,1cyclictest2274-21cron22:35:013
2326992727,0cyclictest0-21swapper/221:45:132
2326992725,1cyclictest8755-21munin-run21:40:002
2322992727,0cyclictest0-21swapper/122:55:141
2322992727,0cyclictest0-21swapper/122:30:121
2322992726,0cyclictest0-21swapper/123:25:141
232299270,27cyclictest0-21swapper/120:30:001
2317992727,0cyclictest0-21swapper/022:10:110
233199269,4cyclictest17956-21cut19:40:193
2331992626,0cyclictest0-21swapper/322:05:113
2331992626,0cyclictest0-21swapper/321:20:123
2326992626,0cyclictest9566-21apt-get22:50:122
2326992626,0cyclictest0-21swapper/200:25:122
2326992624,1cyclictest0-21swapper/223:20:012
2322992626,0cyclictest0-21swapper/123:10:121
2317992626,0cyclictest4340-21apt-get21:30:120
2317992626,0cyclictest27955-21apt-get22:20:130
2317992626,0cyclictest0-21swapper/021:50:010
2317992626,0cyclictest0-21swapper/000:30:120
2326992525,0cyclictest0-21swapper/223:40:132
2326992525,0cyclictest0-21swapper/219:40:142
2322992525,0cyclictest28208-21apt-get23:30:141
2322992525,0cyclictest11874-21apt-get19:30:151
2322992525,0cyclictest0-21swapper/122:05:011
2322992525,0cyclictest0-21swapper/121:40:141
2322992525,0cyclictest0-21swapper/119:55:141
2317992525,0cyclictest0-21swapper/021:40:150
2317992523,1cyclictest303-21systemd-journal22:20:000
233199247,7cyclictest0-21swapper/320:35:133
2326992424,0cyclictest0-21swapper/219:35:012
2326992424,0cyclictest0-21swapper/200:15:142
2326992422,1cyclictest7871-21munin-run20:30:012
2326992422,1cyclictest6964-21munin-run19:20:012
2322992424,0cyclictest0-21swapper/123:50:131
2322992424,0cyclictest0-21swapper/123:35:131
2322992424,0cyclictest0-21swapper/123:00:151
2322992424,0cyclictest0-21swapper/121:30:111
2317992424,0cyclictest0-21swapper/020:35:110
2317992422,1cyclictest6906-21cron19:20:010
2317992422,1cyclictest25878-21cron20:00:020
2317992422,1cyclictest19629-21munin-run00:20:000
2326992323,0cyclictest0-21swapper/220:15:142
2322992323,0cyclictest0-21swapper/119:40:141
2317992321,1cyclictest25583-21cron23:25:000
2331992222,0cyclictest0-21swapper/322:10:123
2331992221,1cyclictest0-21swapper/322:50:123
2331992220,1cyclictest31809-21cron21:20:013
2331992220,1cyclictest26805-21perf21:10:003
2326992222,0cyclictest0-21swapper/221:15:122
2326992222,0cyclictest0-21swapper/220:55:152
2326992221,1cyclictest26591-21cron00:35:012
2322992222,0cyclictest0-21swapper/121:55:151
2322992222,0cyclictest0-21swapper/119:45:131
2322992222,0cyclictest0-21swapper/119:25:141
2317992222,0cyclictest21496-21apt-get19:50:130
2317992222,0cyclictest21496-21apt-get19:50:130
2317992222,0cyclictest20654-21apt-get22:05:110
2317992222,0cyclictest0-21swapper/000:35:140
2317992221,1cyclictest32100-21apt-get21:20:110
2317992220,1cyclictest2281-21cron22:35:010
2331992121,0cyclictest28525-21perf20:05:013
2331992121,0cyclictest0-21swapper/319:45:123
2331992121,0cyclictest0-21swapper/319:25:143
2331992120,1cyclictest25880-21apt-get23:25:143
2326992121,0cyclictest0-21swapper/221:40:142
2326992120,0cyclictest0-21swapper/222:30:122
2322992121,0cyclictest0-21swapper/121:20:111
2322992121,0cyclictest0-21swapper/121:15:111
2331992020,0cyclictest0-21swapper/320:50:133
2331992020,0cyclictest0-21swapper/320:05:173
2326992020,0cyclictest0-21swapper/223:25:142
2326992020,0cyclictest0-21swapper/223:05:152
2326992019,1cyclictest0-21swapper/223:10:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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