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2025-07-06 - 00:39

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, 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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  Intel
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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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Fri Jul 04, 2025 12:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
745799182179,1cyclictest0-21swapper/107:14:181
745599161151,9cyclictest0-21swapper/007:10:000
2096211994,10sleep20-21swapper/207:05:112
746099115113,1cyclictest0-21swapper/207:10:002
21902115102,9sleep30-21swapper/307:05:173
6936210996,10sleep10-21swapper/107:06:061
7042210795,9sleep00-21swapper/007:07:290
7460995753,3cyclictest31576-21kworker/u16:1+events_unbound08:40:022
7460995247,3cyclictest20810-21kworker/u16:2+events_unbound10:45:022
7460994742,3cyclictest31576-21kworker/u16:1+events_unbound08:45:262
7457994539,5cyclictest20810-21kworker/u16:2+events_unbound12:15:021
7460994441,2cyclictest20810-21kworker/u16:2+events_unbound07:55:322
7460994340,2cyclictest20810-21kworker/u16:2+events_unbound12:35:272
7460994339,3cyclictest31576-21kworker/u16:1+events_unbound07:30:242
7460994238,3cyclictest31576-21kworker/u16:1+events_unbound08:00:162
7460994238,3cyclictest20810-21kworker/u16:2+events_unbound10:40:272
7460994238,3cyclictest20810-21kworker/u16:2+events_unbound08:50:272
7460994238,3cyclictest20810-21kworker/u16:2+events_unbound08:10:292
7460994236,2cyclictest20810-21kworker/u16:2+events_unbound07:25:172
223442420,1sleep0181rcuc/010:45:210
7460994036,3cyclictest20810-21kworker/u16:2+events_unbound09:20:272
7460993936,2cyclictest20810-21kworker/u16:2+events_unbound09:45:272
7460993834,3cyclictest20810-21kworker/u16:2+events_unbound08:05:262
7460993830,3cyclictest20810-21kworker/u16:2+events_unbound11:55:252
7460993734,2cyclictest20810-21kworker/u16:2+events_unbound10:00:252
7460993733,3cyclictest20810-21kworker/u16:2+events_unbound12:10:202
7460993733,3cyclictest20810-21kworker/u16:2+events_unbound09:35:252
7460993733,3cyclictest20810-21kworker/u16:2+events_unbound07:15:222
7460993632,3cyclictest31576-21kworker/u16:1+events_unbound11:05:272
7460993632,3cyclictest31576-21kworker/u16:1+events_unbound08:35:172
7460993632,3cyclictest31576-21kworker/u16:1+events_unbound08:20:262
7460993532,2cyclictest20810-21kworker/u16:2+events_unbound09:05:172
7460993531,3cyclictest31576-21kworker/u16:1+events_unbound12:30:282
7460993528,3cyclictest31576-21kworker/u16:1+events_unbound08:55:372
7460993431,2cyclictest20810-21kworker/u16:2+events_unbound09:40:162
7460993431,2cyclictest20810-21kworker/u16:2+events_unbound07:40:252
7460993430,3cyclictest31576-21kworker/u16:1+events_unbound11:00:152
7460993430,3cyclictest31576-21kworker/u16:1+events_unbound10:20:272
7460993430,3cyclictest31576-21kworker/u16:1+events_unbound07:20:302
7460993330,2cyclictest31576-21kworker/u16:1+events_unbound09:00:162
7460993329,3cyclictest31576-21kworker/u16:1+events_unbound12:25:272
7460993329,3cyclictest31576-21kworker/u16:1+events_unbound11:20:182
7460993329,3cyclictest20810-21kworker/u16:2+events_unbound10:15:212
7460993326,2cyclictest20810-21kworker/u16:2+events_unbound09:55:242
7460993325,3cyclictest20810-21kworker/u16:2+events_unbound11:50:162
7460993229,2cyclictest31576-21kworker/u16:1+events_unbound09:15:262
7460993229,2cyclictest20810-21kworker/u16:2+events_unbound10:50:242
7460993229,2cyclictest20810-21kworker/u16:2+events_unbound10:50:242
7460993228,3cyclictest31576-21kworker/u16:1+events_unbound07:35:272
7460993226,3cyclictest31576-21kworker/u16:1+events_unbound09:10:152
7460993129,2cyclictest20810-21kworker/u16:2+events_unbound08:30:172
7460993127,3cyclictest31576-21kworker/u16:1+events_unbound10:35:262
7460993027,2cyclictest31576-21kworker/u16:1+events_unbound09:30:272
7460993027,2cyclictest31576-21kworker/u16:1+events_unbound09:25:182
7460993027,2cyclictest20810-21kworker/u16:2+events_unbound11:45:272
7460993027,2cyclictest20810-21kworker/u16:2+events_unbound11:15:252
7460993026,3cyclictest31576-21kworker/u16:1+events_unbound11:40:282
7460993026,3cyclictest20810-21kworker/u16:2+events_unbound11:35:292
7460992927,1cyclictest20810-21kworker/u16:2+events_unbound11:30:262
7460992925,3cyclictest31576-21kworker/u16:1+events_unbound10:05:182
7460992925,3cyclictest31576-21kworker/u16:1+events_unbound08:25:162
7460992925,3cyclictest31576-21kworker/u16:1+events_unbound07:50:212
7460992925,3cyclictest20810-21kworker/u16:2+events_unbound07:45:262
7460992825,2cyclictest31576-21kworker/u16:1+events_unbound12:20:182
7457992815,12cyclictest8250-21cut09:05:191
7460992724,2cyclictest31576-21kworker/u16:1+events_unbound11:10:172
7457992723,3cyclictest31576-21kworker/u16:1+events_unbound11:40:131
7460992623,2cyclictest20810-21kworker/u16:2+events_unbound12:00:002
7460992622,3cyclictest31576-21kworker/u16:1+events_unbound11:25:172
7460992622,3cyclictest31576-21kworker/u16:1+events_unbound10:55:142
7460992619,3cyclictest20810-21kworker/u16:2+events_unbound12:15:152
7457992511,11cyclictest449-21sed08:30:001
7455992516,7cyclictest4608-21irqrtprio11:00:180
7460992421,2cyclictest20810-21kworker/u16:2+events_unbound08:15:142
7460992420,3cyclictest20810-21kworker/u16:2+events_unbound09:50:272
7460992320,2cyclictest20810-21kworker/u16:2+events_unbound10:30:172
745799232,14cyclictest14356-21kthreadcore09:10:181
745799214,16cyclictest0-21swapper/108:50:191
745799213,15cyclictest6475-21taskset09:01:541
7457992111,8cyclictest271ktimers/107:57:161
7460992016,3cyclictest20810-21kworker/u16:2+events_unbound10:25:302
745799204,11cyclictest722-21snmpd09:57:461
745799203,16cyclictest0-21swapper/111:00:391
7460991916,2cyclictest20810-21kworker/u16:2+events_unbound10:10:162
745799194,15cyclictest0-21swapper/108:05:241
745799194,14cyclictest0-21swapper/111:45:231
745799194,14cyclictest0-21swapper/111:05:191
745799194,12cyclictest7448-21cyclictest11:25:021
745799194,12cyclictest0-21swapper/108:20:151
745799194,12cyclictest0-21swapper/107:45:071
745799194,11cyclictest161632chrt08:12:241
745799193,13cyclictest1424-21cat10:25:231
745799192,14cyclictest18890-21apt-get10:45:031
745799192,14cyclictest0-21swapper/112:25:071
745799192,14cyclictest0-21swapper/109:50:061
745799192,14cyclictest0-21swapper/109:40:021
745799192,14cyclictest0-21swapper/107:35:121
745799192,12cyclictest22682-21grep07:20:231
745799192,12cyclictest17219-21munin-run08:45:011
745799191,15cyclictest0-21swapper/108:55:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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