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2025-11-24 - 13:03
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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 Mon Nov 24, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2387499310,30cyclictest3700-21sendmail-msp23:00:023
2387399310,30cyclictest3942-21cron20:45:002
2387499300,29cyclictest16024-21cron00:35:013
23872993028,1cyclictest609-21dbus-daemon22:40:011
23874992927,1cyclictest5713-21sendmail-msp19:40:013
2387499290,28cyclictest0-21swapper/320:00:143
2387499290,1cyclictest32409-21apt-get00:00:133
23873992927,1cyclictest29720-21perf23:55:022
2387399290,1cyclictest0-21swapper/219:55:012
2387299290,28cyclictest22986-21apt-get21:25:151
2387299290,28cyclictest0-21swapper/123:05:121
2387299290,1cyclictest31730-21munin-run20:35:001
23871992927,1cyclictest15591-21sh21:10:000
2387199290,28cyclictest29986-21apt-get21:40:110
2387199290,28cyclictest24129-21apt-get19:10:140
2387499280,28cyclictest0-21swapper/319:40:143
2387499280,0cyclictest17961-21apt-get23:30:133
2387499280,0cyclictest0-21swapper/319:45:143
23873992828,0cyclictest0-21swapper/221:30:112
23873992828,0cyclictest0-21swapper/200:10:162
23873992827,1cyclictest0-21swapper/223:45:132
2387399280,0cyclictest0-21swapper/219:25:142
23872992827,0cyclictest4682-21apt-get00:10:161
2387299280,28cyclictest0-21swapper/121:40:111
2387299280,28cyclictest0-21swapper/120:45:111
2387299280,28cyclictest0-21swapper/100:00:121
23871992828,0cyclictest0-21swapper/020:55:110
23871992827,1cyclictest2097-21munin-run00:05:000
2387199280,0cyclictest0-21swapper/020:25:130
2387199280,0cyclictest0-21swapper/000:25:140
23874992727,0cyclictest20610-21apt-get21:20:123
23874992727,0cyclictest0-21swapper/321:05:143
23874992727,0cyclictest0-21swapper/319:10:153
23874992726,1cyclictest8645-21chrt23:10:133
2387499270,27cyclictest0-21swapper/319:25:013
2387499270,0cyclictest0-21swapper/319:55:133
23873992727,0cyclictest31738-21apt-get22:50:132
23873992727,0cyclictest0-21swapper/223:10:132
23873992727,0cyclictest0-21swapper/222:25:152
23873992727,0cyclictest0-21swapper/220:15:142
23873992725,1cyclictest609-21dbus-daemon22:00:012
2387399270,27cyclictest0-21swapper/222:00:142
2387399270,0cyclictest0-21swapper/222:10:132
23872992727,0cyclictest0-21swapper/123:35:121
23872992727,0cyclictest0-21swapper/123:10:131
23872992727,0cyclictest0-21swapper/119:50:131
2387299270,0cyclictest0-21swapper/100:25:141
23871992727,0cyclictest32311-21apt-get21:45:110
23871992727,0cyclictest0-21swapper/023:40:130
23871992727,0cyclictest0-21swapper/023:20:170
23871992727,0cyclictest0-21swapper/020:15:150
23871992724,3cyclictest0-21swapper/022:15:130
2387199270,27cyclictest0-21swapper/022:25:150
23874992625,1cyclictest0-21swapper/321:15:013
23873992626,0cyclictest25043-21perf21:30:002
23873992626,0cyclictest24129-21apt-get19:10:142
23873992626,0cyclictest0-21swapper/222:05:102
23873992626,0cyclictest0-21swapper/219:55:152
23873992624,1cyclictest8630-21munin-run20:55:012
23873992624,1cyclictest29364-21cron20:30:002
23872992626,0cyclictest11408-21perf00:25:011
23872992626,0cyclictest0-21swapper/122:00:131
23872992626,0cyclictest0-21swapper/121:55:001
23872992625,1cyclictest17649-21apt-get20:05:131
23871992626,0cyclictest0-21swapper/022:10:010
23871992626,0cyclictest0-21swapper/022:00:130
23871992626,0cyclictest0-21swapper/020:45:110
23871992625,1cyclictest63250irq/126-eno121:20:000
23871992625,0cyclictest20339-21apt-get23:35:110
23871992624,1cyclictest1643-21perf20:40:000
23874992525,0cyclictest0-21swapper/300:15:173
23874992524,1cyclictest609-21dbus-daemon21:45:003
23874992523,1cyclictest27093-21http23:50:013
23874992523,1cyclictest0-21swapper/320:25:013
23873992525,0cyclictest0-21swapper/222:30:122
23873992525,0cyclictest0-21swapper/220:30:112
23873992523,1cyclictest0-21swapper/223:25:132
23872992525,0cyclictest0-21swapper/123:45:011
23872992525,0cyclictest0-21swapper/122:55:131
23872992525,0cyclictest0-21swapper/121:05:131
23872992525,0cyclictest0-21swapper/120:15:141
23872992523,1cyclictest0-21swapper/122:55:011
23871992525,0cyclictest0-21swapper/021:25:130
23871992525,0cyclictest0-21swapper/020:35:000
23874992424,0cyclictest0-21swapper/320:05:143
23874992424,0cyclictest0-21swapper/319:30:133
23874992422,1cyclictest4545-21apt-get21:55:133
23874992421,2cyclictest22058-21cron20:15:013
23873992424,0cyclictest0-21swapper/221:05:132
23873992424,0cyclictest0-21swapper/219:20:132
23872992422,1cyclictest0-21swapper/122:05:101
23871992424,0cyclictest1330-21apt-get19:30:140
23871992424,0cyclictest0-21swapper/023:05:120
23871992423,1cyclictest26492-21sendmail-msp22:40:000
23874992323,0cyclictest22353-21apt-get20:15:143
23874992323,0cyclictest19782-21apt-get22:25:143
23874992323,0cyclictest0-21swapper/321:25:133
23873992323,0cyclictest4239-21apt-get20:45:112
23873992323,0cyclictest0-21swapper/219:30:132
23873992323,0cyclictest0-21swapper/200:05:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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