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2025-11-20 - 22:01
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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 Thu Nov 20, 2025 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2228499310,30cyclictest31568-21cron07:30:011
2228799300,29cyclictest303-21systemd-journal12:25:012
2228499300,29cyclictest29638-21sendmail-msp12:00:011
2229199290,1cyclictest31941-21sh08:39:593
2228799290,1cyclictest0-21swapper/209:00:012
22284992928,1cyclictest6062-21apt-get10:00:121
22284992928,1cyclictest14166-21apt-get12:35:131
2228199290,28cyclictest6611-21apt-get11:10:110
2228199290,28cyclictest3982-21perf07:40:010
2228199290,1cyclictest0-21swapper/008:35:000
22291992828,0cyclictest22666-21apt-get10:35:133
2229199280,0cyclictest0-21swapper/308:50:133
2228799280,28cyclictest0-21swapper/212:25:102
2228799280,27cyclictest0-21swapper/210:25:122
2228799280,0cyclictest22539-21apt-get07:10:122
2228799280,0cyclictest11285-21apt-get11:20:142
2228799280,0cyclictest0-21swapper/211:00:132
22284992828,0cyclictest20602-21apt-get11:40:111
22284992827,1cyclictest20330-21apt-get10:30:131
22284992826,1cyclictest303-21systemd-journal08:30:001
2228499280,28cyclictest0-21swapper/108:05:121
2228499280,1cyclictest8948-21perf12:25:011
22281992828,0cyclictest0-21swapper/011:20:140
2228199280,28cyclictest0-21swapper/012:15:130
2228199280,27cyclictest0-21swapper/010:35:120
2228199280,0cyclictest3713-21apt-get09:55:130
2228199280,0cyclictest0-21swapper/008:20:150
22291992726,1cyclictest28806-21apt-get09:40:143
22287992727,0cyclictest0-21swapper/212:15:132
22287992727,0cyclictest0-21swapper/210:35:012
22287992726,1cyclictest1642-21cron11:00:002
22287992726,0cyclictest3136-21apt-get09:55:022
2228799270,0cyclictest0-21swapper/209:00:362
22284992727,0cyclictest28217-21apt-get09:40:021
22284992727,0cyclictest0-21swapper/108:40:091
22284992727,0cyclictest0-21swapper/107:50:121
22284992727,0cyclictest0-21swapper/107:10:131
2228499270,0cyclictest0-21swapper/109:30:121
2228499270,0cyclictest0-21swapper/107:40:121
22281992725,1cyclictest27064-21perf10:45:000
22291992626,0cyclictest0-21swapper/311:10:093
22291992626,0cyclictest0-21swapper/310:45:123
22291992624,1cyclictest303-21systemd-journal09:40:013
22287992626,0cyclictest0-21swapper/212:30:132
22287992626,0cyclictest0-21swapper/210:00:112
22287992626,0cyclictest0-21swapper/207:30:132
22287992624,1cyclictest1931-21apt-get08:45:002
22284992626,0cyclictest0-21swapper/109:35:091
22284992623,2cyclictest10422-21sh10:10:001
22281992626,0cyclictest0-21swapper/009:40:140
22287992525,0cyclictest0-21swapper/208:25:082
22284992525,0cyclictest0-21swapper/109:25:111
22284992525,0cyclictest0-21swapper/109:00:111
22284992523,1cyclictest20288-21cron11:40:001
22281992525,0cyclictest0-21swapper/008:55:130
22281992524,1cyclictest0-21swapper/011:55:010
22291992424,0cyclictest0-21swapper/310:20:113
22291992424,0cyclictest0-21swapper/309:10:123
22287992424,0cyclictest0-21swapper/208:30:102
22287992423,1cyclictest15628-21cron08:05:012
22284992424,0cyclictest0-21swapper/110:35:131
22281992424,0cyclictest8935-21apt-get11:15:120
22281992424,0cyclictest0-21swapper/012:25:010
22281992424,0cyclictest0-21swapper/011:30:150
22287992323,0cyclictest0-21swapper/211:15:122
22287992321,1cyclictest25003-21munin-run11:50:012
22287992321,1cyclictest24863-21apt-get07:15:152
22287992319,3cyclictest30406-21fschecks_count12:00:142
22284992323,0cyclictest1025-21apt-get09:50:111
22284992322,0cyclictest0-21swapper/108:35:151
22281992323,0cyclictest0-21swapper/008:10:120
22281992321,1cyclictest28242-21munin-run09:40:000
22287992222,0cyclictest0-21swapper/208:35:152
22287992222,0cyclictest0-21swapper/207:40:132
22284992222,0cyclictest211rcuc/108:05:011
22284992220,1cyclictest0-21swapper/110:49:591
22291992121,0cyclictest13588-21apt-get08:00:123
22291992121,0cyclictest0-21swapper/311:55:113
22291992119,1cyclictest3996-21cron11:05:013
22287992121,0cyclictest16246-21perf09:15:002
22284992121,0cyclictest0-21swapper/111:25:011
22284992121,0cyclictest0-21swapper/110:40:121
22284992121,0cyclictest0-21swapper/107:20:121
22281992121,0cyclictest0-21swapper/011:05:110
22281992120,1cyclictest2214-21apt-get12:10:130
22291992020,0cyclictest0-21swapper/308:55:133
22287992020,0cyclictest0-21swapper/209:50:132
22287992019,0cyclictest0-21swapper/212:10:132
22284992020,0cyclictest9240-21perf09:00:011
22284992020,0cyclictest0-21swapper/112:15:131
22284992020,0cyclictest0-21swapper/110:55:131
22281992020,0cyclictest0-21swapper/012:05:120
22281992020,0cyclictest0-21swapper/007:25:120
22291991919,0cyclictest31129-21apt-get09:45:153
22291991919,0cyclictest0-21swapper/311:35:123
22291991919,0cyclictest0-21swapper/310:40:133
22291991919,0cyclictest0-21swapper/309:55:123
22291991917,1cyclictest15670-21munin-run11:30:013
22287991919,0cyclictest0-21swapper/209:35:102
22287991919,0cyclictest0-21swapper/208:05:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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