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2026-06-15 - 20:23

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 rack8slot4s.osadl.org (updated Mon Jun 15, 2026 00:44:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29786942246177,22sleep30-21swapper/319:08:273
29786972242177,20sleep60-21swapper/619:08:306
29785902231192,26sleep00-21swapper/019:06:540
29762792231163,20sleep50-21swapper/519:05:075
29787302229192,25sleep10-21swapper/119:08:571
29785972220185,23sleep70-21swapper/719:07:027
29786032218181,24sleep40-21swapper/419:07:074
29785602212180,21sleep20-21swapper/219:06:322
297902599284,3cyclictest0-21swapper/722:30:017
297902599284,23cyclictest3009252-21grep19:59:597
2979025992725,2cyclictest0-21swapper/720:50:017
297902599272,24cyclictest0-21swapper/722:30:207
2979018992620,5cyclictest997-21runrttasks21:55:124
2979018992520,5cyclictest0-21swapper/423:25:004
297900899250,24cyclictest2991491-21latency_hist19:30:000
2979025992424,0cyclictest0-21swapper/721:50:127
2979025992422,1cyclictest3174638-21cron00:40:007
2979025992422,1cyclictest3174638-21cron00:39:597
297902599242,1cyclictest3071248-21munin-plugin-st21:45:017
2979025992421,2cyclictest0-21swapper/722:15:137
297902599240,23cyclictest0-21swapper/721:55:117
297902599240,23cyclictest0-21swapper/700:25:037
297902299240,23cyclictest3015623-21apt-get20:10:106
297902299240,23cyclictest0-21swapper/619:25:036
297902099240,23cyclictest0-21swapper/521:20:105
2979018992420,4cyclictest0-21swapper/419:40:174
2979018992419,1cyclictest0-21swapper/422:10:034
297901899240,24cyclictest3112617-21munin-plugin-st22:54:594
297901899240,20cyclictest0-21swapper/423:45:134
297901899240,20cyclictest0-21swapper/400:20:214
2979014992423,1cyclictest3000817-21apt-get19:45:133
2979014992420,3cyclictest3012241-21http20:05:003
297901499240,24cyclictest3109656-21perf22:49:593
297901499240,23cyclictest3094930-21appstreamcli22:25:033
297901499240,23cyclictest0-21swapper/320:50:043
297901499240,23cyclictest0-21swapper/300:35:133
297901499240,23cyclictest0-21swapper/300:35:133
297901399240,23cyclictest3083055-21idleruntime-cro22:05:012
297901399240,23cyclictest0-21swapper/222:30:142
297901399240,23cyclictest0-21swapper/219:15:002
297901399240,22cyclictest3115557-21apt22:59:592
297901399240,22cyclictest0-21swapper/221:30:182
297901399240,1cyclictest3166258-21apt-get00:25:122
297901099240,24cyclictest0-21swapper/122:45:171
297900899240,23cyclictest0-21swapper/019:55:190
2979025992322,1cyclictest0-21swapper/722:10:017
2979025992322,1cyclictest0-21swapper/721:30:137
2979025992322,1cyclictest0-21swapper/719:50:127
2979025992321,1cyclictest0-21swapper/700:10:207
297902599230,2cyclictest3018134-21apt20:15:007
297902599230,22cyclictest0-21swapper/723:30:117
297902599230,22cyclictest0-21swapper/700:30:107
297902599230,22cyclictest0-21swapper/700:30:107
297902299230,22cyclictest0-21swapper/619:20:116
2979020992322,1cyclictest0-21swapper/523:50:135
297902099230,23cyclictest3000821-21chrt19:45:135
297902099230,23cyclictest2988786-21cut19:25:005
297902099230,22cyclictest3166099-21tar00:25:015
2979018992322,1cyclictest0-21swapper/421:00:124
2979018992321,2cyclictest0-21swapper/422:35:114
2979018992320,3cyclictest0-21swapper/422:10:004
297901899230,22cyclictest0-21swapper/422:25:124
297901899230,20cyclictest0-21swapper/420:20:114
297901899230,19cyclictest0-21swapper/423:15:124
297901899230,0cyclictest3074617-21apt-get21:50:134
297901899230,0cyclictest0-21swapper/420:55:114
2979014992321,1cyclictest3089383-21apt-get22:15:123
2979014992321,1cyclictest2988980-21apt-get19:25:103
297901499230,22cyclictest3160303-21apt-get00:15:113
297901499230,22cyclictest3080521-21apt-get22:00:123
297901499230,22cyclictest3068324-21idleruntime-cro21:40:003
297901499230,22cyclictest3006733-21apt-get19:55:123
297901499230,22cyclictest0-21swapper/320:40:013
297901499230,1cyclictest3042183-21apt-get20:55:113
2979013992321,1cyclictest3095166-21tar22:25:002
2979013992321,1cyclictest3012227-21awk20:05:002
297901399230,22cyclictest2988528-21perf19:25:002
297901399230,22cyclictest0-21swapper/222:35:112
297901099230,23cyclictest3170503-21ntpq00:30:171
297901099230,23cyclictest3170503-21ntpq00:30:161
297901099230,22cyclictest3074193-21munin-run21:50:011
297901099230,22cyclictest3031660-21ntpq20:35:181
297901099230,22cyclictest0-21swapper/120:45:111
297901099230,1cyclictest3104184-21apt-get22:40:121
2979008992322,1cyclictest3053969-21apt-get21:15:120
2979008992322,1cyclictest0-21swapper/019:45:130
297900899230,22cyclictest0-21swapper/021:35:130
2979025992222,0cyclictest0-21swapper/723:45:127
2979025992222,0cyclictest0-21swapper/721:35:137
2979025992222,0cyclictest0-21swapper/720:55:137
2979025992221,1cyclictest0-21swapper/719:25:107
2979025992221,1cyclictest0-21swapper/700:15:127
2979025992220,1cyclictest0-21swapper/722:50:007
297902599220,21cyclictest0-21swapper/723:35:197
297902599220,21cyclictest0-21swapper/723:25:007
297902599220,21cyclictest0-21swapper/722:50:127
297902599220,21cyclictest0-21swapper/722:20:187
297902599220,21cyclictest0-21swapper/722:10:127
297902599220,21cyclictest0-21swapper/721:20:097
297902599220,21cyclictest0-21swapper/720:35:127
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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