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2026-08-02 - 04:48
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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 Sun Aug 02, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2092699310,0cyclictest0-21swapper/119:20:131
2093599300,29cyclictest1-21systemd23:55:013
2093099300,29cyclictest307-21systemd-journal23:55:012
2092599300,29cyclictest19936-21cron21:25:000
20935992927,1cyclictest961-21apt-get00:10:103
2093599290,28cyclictest24354-21apt-get20:25:113
2093599290,28cyclictest2386-21apt-get23:05:133
2093599290,28cyclictest16341-21apt-get23:35:133
2093599290,28cyclictest12903-21apt-get00:35:133
2093099290,1cyclictest18367-21cron23:40:012
20926992928,1cyclictest420-21cron19:35:001
20926992927,1cyclictest8282-21cron21:00:011
2092699290,28cyclictest31922-21munin-run21:50:011
2092699290,28cyclictest25573-21perf19:20:011
2092699290,28cyclictest2142-21apt-get21:55:121
2092699290,1cyclictest5646-21cron00:20:011
20935992825,2cyclictest32134-21cron23:00:013
2093599280,28cyclictest0-21swapper/321:50:113
2093599280,27cyclictest32427-21apt-get23:00:123
20930992827,0cyclictest6807-21apt-get22:05:122
20930992825,2cyclictest621-21dbus-daemon23:00:012
2093099280,0cyclictest10920-21apt-get21:05:122
2093099280,0cyclictest0-21swapper/221:50:112
20926992828,0cyclictest0-21swapper/123:25:111
20926992828,0cyclictest0-21swapper/122:35:141
20926992828,0cyclictest0-21swapper/120:15:151
2092699280,0cyclictest0-21swapper/123:45:131
2092699280,0cyclictest0-21swapper/119:45:121
2092599280,27cyclictest0-21swapper/023:00:110
2092599280,0cyclictest0-21swapper/021:35:130
2092599280,0cyclictest0-21swapper/020:35:100
20935992727,0cyclictest5938-21apt-get00:20:133
20935992727,0cyclictest1303-21apt-get20:45:133
20935992727,0cyclictest0-21swapper/322:05:123
20935992727,0cyclictest0-21swapper/321:05:123
20935992727,0cyclictest0-21swapper/300:05:173
20935992726,0cyclictest25436-21apt-get22:45:133
20935992725,1cyclictest28328-21latency_hist00:00:013
20935992725,1cyclictest0-21swapper/323:29:593
2093599270,27cyclictest0-21swapper/322:10:123
20930992727,0cyclictest31069-21apt-get00:05:172
20930992727,0cyclictest0-21swapper/220:45:132
20930992727,0cyclictest0-21swapper/200:20:132
20930992727,0cyclictest0-21swapper/200:10:112
20930992726,1cyclictest31351-21apt-get20:40:142
20930992726,0cyclictest9377-21apt-get23:20:152
2093099270,27cyclictest0-21swapper/222:10:122
2093099270,0cyclictest0-21swapper/223:05:132
2093099270,0cyclictest0-21swapper/223:00:122
20926992727,0cyclictest0-21swapper/120:10:161
20926992727,0cyclictest0-21swapper/100:35:131
20926992725,1cyclictest3125-21perf19:40:011
20926992725,1cyclictest0-21swapper/120:00:011
20926992724,3cyclictest0-21swapper/122:25:131
20926992724,2cyclictest30513-21cron19:30:011
20925992727,0cyclictest22033-21apt-get20:20:120
20925992727,0cyclictest0-21swapper/022:00:120
20925992727,0cyclictest0-21swapper/021:25:110
20925992727,0cyclictest0-21swapper/020:55:120
20925992727,0cyclictest0-21swapper/020:40:140
20925992727,0cyclictest0-21swapper/000:30:120
20925992727,0cyclictest0-21swapper/000:10:110
20925992726,1cyclictest633-21in:imuxsock23:20:010
20925992726,1cyclictest3087-21cron19:40:010
2092599270,27cyclictest0-21swapper/021:05:120
20935992626,0cyclictest0-21swapper/323:20:153
20935992626,0cyclictest0-21swapper/322:15:123
20935992626,0cyclictest0-21swapper/320:40:143
20930992626,0cyclictest0-21swapper/222:45:132
20930992626,0cyclictest0-21swapper/222:15:122
20930992625,0cyclictest28706-21apt-get00:00:122
20926992626,0cyclictest0-21swapper/123:40:121
20925992626,0cyclictest26956-21apt-get21:40:020
20925992626,0cyclictest0-21swapper/023:40:120
20925992626,0cyclictest0-21swapper/022:05:130
20925992626,0cyclictest0-21swapper/000:05:170
20935992525,0cyclictest0-21swapper/322:00:123
20935992525,0cyclictest0-21swapper/300:00:133
20930992525,0cyclictest4483-21apt-get22:00:122
20930992525,0cyclictest0-21swapper/200:00:012
20926992525,0cyclictest30084-21apt-get22:55:121
20930992424,0cyclictest13748-21perf23:30:002
20926992424,0cyclictest23937-21apt-get23:50:111
20926992424,0cyclictest0-21swapper/100:25:121
20926992422,1cyclictest0-21swapper/122:55:011
20925992424,0cyclictest0-21swapper/023:10:130
20925992424,0cyclictest0-21swapper/019:50:140
20925992424,0cyclictest0-21swapper/000:35:140
20935992323,0cyclictest0-21swapper/323:10:133
20930992323,0cyclictest4707-21apt-get23:10:132
20930992322,1cyclictest6254-21apt-get20:55:112
20930992322,1cyclictest3932-21apt-get20:50:122
20930992322,1cyclictest3932-21apt-get20:50:122
20925992323,0cyclictest0-21swapper/022:45:130
20925992323,0cyclictest0-21swapper/022:20:120
20925992323,0cyclictest0-21swapper/022:15:120
20925992323,0cyclictest0-21swapper/020:45:130
20925992321,1cyclictest0-21swapper/019:20:010
20935992222,0cyclictest19682-21apt-get20:15:153
20935992222,0cyclictest0-21swapper/322:50:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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