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2025-05-20 - 14:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

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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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot6s.osadl.org (updated Tue May 20, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
60792740,4sleep015-21rcuc/005:50:150
3793996940,13cyclictest0-21swapper/308:25:193
378899684,56cyclictest0-21swapper/009:34:550
378899683,59cyclictest0-21swapper/005:49:350
379199667,51cyclictest0-21swapper/107:50:121
378899653,15cyclictest0-21swapper/010:04:510
3788996510,49cyclictest0-21swapper/007:24:570
3788996510,49cyclictest0-21swapper/007:24:570
3793996436,13cyclictest0-21swapper/308:31:173
3793996436,10cyclictest1263-21runrttasks09:05:013
378899644,52cyclictest0-21swapper/007:10:180
3793996336,11cyclictest0-21swapper/305:47:403
379199635,50cyclictest0-21swapper/106:49:471
3793996229,13cyclictest0-21swapper/308:04:563
379199626,48cyclictest1263-21runrttasks07:15:181
378899623,34cyclictest0-21swapper/005:25:130
17052623,12sleep10-21swapper/109:09:551
3793996129,14cyclictest0-21swapper/309:50:133
379199614,50cyclictest0-21swapper/107:09:461
379199614,49cyclictest0-21swapper/106:00:251
379199614,49cyclictest0-21swapper/106:00:251
227799610,12rtkit-daemon2276-21rtkit-daemon07:07:332
379399608,28cyclictest0-21swapper/309:00:013
379399605,46cyclictest0-21swapper/309:25:063
379399604,31cyclictest0-21swapper/309:44:403
3793996020,15cyclictest0-21swapper/306:45:253
379399596,29cyclictest0-21swapper/305:05:153
379399595,31cyclictest0-21swapper/305:50:033
379399595,29cyclictest0-21swapper/309:15:023
379399594,29cyclictest0-21swapper/307:15:103
3793995910,28cyclictest0-21swapper/306:50:103
379199593,11cyclictest1263-21runrttasks08:50:191
379199593,11cyclictest1263-21runrttasks08:50:191
379399586,30cyclictest0-21swapper/307:00:183
379399586,29cyclictest0-21swapper/305:15:233
379399586,29cyclictest0-21swapper/305:15:233
379399586,28cyclictest0-21swapper/308:35:043
379399585,31cyclictest0-21swapper/308:01:193
379399585,29cyclictest0-21swapper/310:00:433
379399585,29cyclictest0-21swapper/309:45:113
379399585,29cyclictest0-21swapper/308:49:553
379399585,29cyclictest0-21swapper/308:49:553
379399585,29cyclictest0-21swapper/305:20:113
379399585,28cyclictest0-21swapper/308:40:343
379399585,27cyclictest0-21swapper/306:25:013
3793995839,12cyclictest0-21swapper/304:56:283
3793995832,9cyclictest15849-21cat05:04:523
3793995827,13cyclictest0-21swapper/306:15:103
3793995826,13cyclictest0-21swapper/305:10:093
3793995824,14cyclictest0-21swapper/306:09:493
3792995840,10cyclictest20350-21grep07:30:212
379199584,48cyclictest0-21swapper/105:54:501
379199584,47cyclictest0-21swapper/104:50:111
378899583,47cyclictest0-21swapper/009:45:130
378899583,11cyclictest1154-21cut08:00:030
378899582,50cyclictest1091-21lldpd05:15:100
378899582,50cyclictest1091-21lldpd05:15:100
227799580,4rtkit-daemon2276-21rtkit-daemon05:27:373
379399577,31cyclictest0-21swapper/306:55:043
379399575,29cyclictest0-21swapper/309:55:193
379399575,29cyclictest0-21swapper/307:10:113
379399575,29cyclictest0-21swapper/304:45:033
379399575,28cyclictest0-21swapper/308:19:593
379399575,28cyclictest0-21swapper/306:24:483
379399574,29cyclictest0-21swapper/306:40:243
379399574,28cyclictest0-21swapper/308:14:443
379399574,28cyclictest0-21swapper/308:14:443
3793995734,8cyclictest6583-21aten_r1power_cu09:19:523
3793995734,7cyclictest11991-21cat06:04:503
3793995734,7cyclictest11991-21cat06:04:503
379199574,45cyclictest0-21swapper/108:34:551
378899574,47cyclictest0-21swapper/008:30:000
378899572,46cyclictest1429-21sadc09:09:420
379399564,28cyclictest0-21swapper/307:39:463
3793995629,10cyclictest0-21swapper/309:30:173
3793995629,10cyclictest0-21swapper/309:30:173
379199563,46cyclictest1138-21snmpd05:24:591
378899563,47cyclictest0-21swapper/005:55:230
378899563,47cyclictest0-21swapper/004:40:150
378899563,12cyclictest0-21swapper/006:43:330
379399556,28cyclictest0-21swapper/308:14:563
379399554,30cyclictest0-21swapper/304:54:523
3793995517,31cyclictest1632-21nscd08:49:423
379199559,40cyclictest0-21swapper/106:10:081
378899553,45cyclictest0-21swapper/009:43:530
378899553,45cyclictest0-21swapper/007:45:120
58922542,9sleep30-21swapper/304:41:263
3793995431,10cyclictest0-21swapper/309:37:073
3793995430,9cyclictest0-21swapper/310:05:393
3793995424,12cyclictest0-21swapper/307:28:043
3793995424,12cyclictest0-21swapper/307:28:043
379199543,44cyclictest1131-21munin-node06:50:091
379199543,10cyclictest0-21swapper/105:15:251
379199543,10cyclictest0-21swapper/105:15:251
379199542,47cyclictest0-21swapper/109:08:591
3791995416,20cyclictest0-21swapper/104:55:041
378899544,12cyclictest0-21swapper/008:10:150
378899544,12cyclictest0-21swapper/008:10:150
378899543,44cyclictest0-21swapper/008:44:590
378899543,13cyclictest0-21swapper/006:15:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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