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2026-01-12 - 10:10
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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 rack8slot4.osadl.org (updated Mon Jan 12, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15426732242188,44sleep60-21swapper/619:09:496
15405072242187,17sleep70-21swapper/719:06:377
15404472230175,44sleep30-21swapper/319:05:433
15426382226174,17sleep10-21swapper/119:09:201
15404192226171,43sleep20-21swapper/219:05:182
15404212222189,21sleep40-21swapper/419:05:204
15425922216183,21sleep50-21swapper/519:08:445
15404082214185,18sleep00-21swapper/019:05:090
154292499310,30cyclictest1658594-21apt-get22:43:154
154293399300,29cyclictest0-21swapper/719:55:007
1542928993028,1cyclictest0-21swapper/523:03:115
1542928993028,1cyclictest0-21swapper/520:38:135
154292899300,29cyclictest700-21rs:main5
154292899300,29cyclictest369-21systemd-journal21:45:025
1542924993026,3cyclictest1646851-21sh22:20:024
154292499300,29cyclictest1639425-21apt-get22:08:124
1542916993028,1cyclictest1696460-21awk23:50:001
1542916993027,2cyclictest1707866-21apt-get00:13:111
1542916993027,2cyclictest1592731-21apt20:40:001
154291299300,29cyclictest0-21swapper/022:43:140
1542933992927,1cyclictest1723376-21apt00:40:007
1542933992927,1cyclictest0-21swapper/723:03:107
1542933992927,1cyclictest0-21swapper/720:40:007
154293399290,28cyclictest0-21swapper/700:35:017
154293399290,1cyclictest0-21swapper/721:35:017
154293399290,1cyclictest0-21swapper/721:35:017
1542930992927,1cyclictest1566181-21apt-get19:53:116
154293099290,28cyclictest0-21swapper/623:48:136
154293099290,28cyclictest0-21swapper/620:48:136
154293099290,1cyclictest1671677-21dump-pmu-power23:05:016
154293099290,1cyclictest0-21swapper/622:23:126
1542928992928,1cyclictest1595438-21dump-pmu-power20:45:015
1542928992927,1cyclictest1639425-21apt-get22:08:135
1542928992927,1cyclictest0-21swapper/522:38:135
154292899290,29cyclictest1562733-21apt-config19:45:015
154292899290,28cyclictest0-21swapper/523:33:135
154292899290,1cyclictest1551558-21apt-get19:25:015
1542924992927,1cyclictest0-21swapper/422:48:114
154292499290,28cyclictest0-21swapper/423:10:024
154292499290,28cyclictest0-21swapper/423:03:114
154292499290,28cyclictest0-21swapper/422:58:124
154292499290,28cyclictest0-21swapper/419:45:024
154292499290,28cyclictest0-21swapper/400:28:114
1542922992928,1cyclictest1666915-21apt-get22:58:113
1542922992927,1cyclictest1598757-21apt-get20:53:113
154292299290,28cyclictest0-21swapper/322:38:133
154292299290,28cyclictest0-21swapper/322:18:123
154292299290,28cyclictest0-21swapper/300:23:123
154292299290,28cyclictest0-21swapper/300:08:123
154291999290,29cyclictest0-21swapper/219:55:012
154291999290,28cyclictest1612484-21apt-get21:18:112
154291999290,28cyclictest0-21swapper/223:48:112
154291999290,28cyclictest0-21swapper/222:33:132
154291999290,28cyclictest0-21swapper/219:43:122
154291999290,28cyclictest0-21swapper/219:25:022
154291999290,1cyclictest0-21swapper/200:05:002
1542916992927,1cyclictest0-21swapper/120:33:141
1542916992927,1cyclictest0-21swapper/119:45:011
1542916992926,2cyclictest369-21systemd-journal23:15:021
154291699290,28cyclictest0-21swapper/122:53:141
154291699290,28cyclictest0-21swapper/122:18:121
154291699290,28cyclictest0-21swapper/121:15:021
1542912992928,1cyclictest0-21swapper/023:33:130
154291299290,28cyclictest0-21swapper/019:38:120
154291299290,1cyclictest0-21swapper/022:08:130
1542933992828,0cyclictest0-21swapper/721:30:027
1542933992828,0cyclictest0-21swapper/721:30:017
1542933992827,1cyclictest0-21swapper/721:03:147
1542933992827,1cyclictest0-21swapper/719:38:127
1542933992827,1cyclictest0-21swapper/700:03:127
1542933992827,1cyclictest0-21swapper/700:00:017
1542930992827,1cyclictest0-21swapper/600:25:006
1542930992826,1cyclictest1565546-21latency_hist19:50:006
154293099280,0cyclictest0-21swapper/621:20:016
154293099280,0cyclictest0-21swapper/619:13:136
154292899280,28cyclictest0-21swapper/521:20:015
154292899280,28cyclictest0-21swapper/520:50:015
154292899280,28cyclictest0-21swapper/520:35:015
154292899280,28cyclictest0-21swapper/519:48:115
154292899280,1cyclictest0-21swapper/523:28:125
154292899280,0cyclictest0-21swapper/500:18:115
1542924992828,0cyclictest0-21swapper/421:48:134
1542924992827,1cyclictest0-21swapper/420:13:144
1542924992827,1cyclictest0-21swapper/419:28:134
1542922992827,1cyclictest1620568-21apt-get21:33:123
1542922992827,1cyclictest1620568-21apt-get21:33:123
1542922992827,1cyclictest0-21swapper/321:43:123
154292299280,28cyclictest0-21swapper/320:35:003
154292299280,0cyclictest0-21swapper/300:40:013
1542919992827,1cyclictest1600851-21systemd-run20:55:022
1542919992827,1cyclictest1565581-21systemd-run19:50:002
1542919992827,1cyclictest0-21swapper/222:08:132
1542919992827,1cyclictest0-21swapper/219:13:122
1542919992826,1cyclictest0-21swapper/221:30:012
1542919992826,1cyclictest0-21swapper/221:30:012
154291999280,28cyclictest0-21swapper/219:20:002
154291999280,0cyclictest0-21swapper/220:48:142
1542916992827,1cyclictest0-21swapper/121:28:121
1542916992827,1cyclictest0-21swapper/121:28:121
1542916992826,1cyclictest0-21swapper/120:53:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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