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2026-05-14 - 18:52

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 highest latencies:
System rack1slot6s.osadl.org (updated Thu May 14, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25353991043,81cyclictest8937-21runrttasks07:17:461
25354999934,10cyclictest0-21swapper/207:15:232
2535499934,36cyclictest0-21swapper/207:42:062
2535499934,27cyclictest0-21swapper/209:07:172
2535499914,27cyclictest0-21swapper/206:07:142
25354999119,24cyclictest0-21swapper/209:06:182
2535499904,29cyclictest0-21swapper/210:02:072
2535499894,27cyclictest0-21swapper/208:53:472
25354998918,12cyclictest0-21swapper/208:27:012
25354998917,13cyclictest0-21swapper/209:52:172
25354998917,13cyclictest0-21swapper/209:52:172
2535499884,38cyclictest0-21swapper/207:37:112
2535499884,38cyclictest0-21swapper/207:07:042
2535499884,38cyclictest0-21swapper/207:07:042
2535499884,34cyclictest0-21swapper/207:49:412
2535499884,28cyclictest0-21swapper/206:47:222
2535499884,27cyclictest0-21swapper/206:37:092
2535499884,13cyclictest0-21swapper/205:52:112
25354998826,12cyclictest0-21swapper/209:17:192
25354998812,23cyclictest0-21swapper/207:52:072
2535499874,27cyclictest0-21swapper/208:47:082
2535499873,39cyclictest0-21swapper/208:12:122
25354998729,13cyclictest0-21swapper/204:52:162
2535499864,29cyclictest0-21swapper/208:07:252
2535399863,44cyclictest121850irq/46-eth009:45:351
2535499854,36cyclictest0-21swapper/207:02:042
2535499854,27cyclictest0-21swapper/206:42:102
2535499854,25cyclictest0-21swapper/208:45:202
25354998531,10cyclictest27111-21unixbench_singl06:57:252
2535399854,74cyclictest27550-21fschecks_time09:22:051
2535399854,60cyclictest0-21swapper/109:21:361
2535499843,32cyclictest0-21swapper/209:23:442
2535399844,72cyclictest1419-21runrttasks10:02:061
2535399844,61cyclictest0-21swapper/107:50:121
2535399843,73cyclictest7987-21sendmail_mailqu08:52:171
2535399843,72cyclictest4315-21ssh07:12:081
2535499834,28cyclictest0-21swapper/209:27:002
2535499834,19cyclictest0-21swapper/207:17:112
25354998327,12cyclictest0-21swapper/208:21:492
2535399834,71cyclictest0-21swapper/108:19:501
2535399834,71cyclictest0-21swapper/106:48:531
2535399833,71cyclictest11013-21irqstats05:22:161
2535399833,48cyclictest12539-21kworker/1:107:22:231
25353998313,43cyclictest0-21swapper/108:31:161
2535499823,28cyclictest0-21swapper/208:22:062
25354998227,10cyclictest23111-21crond09:16:462
25354998227,10cyclictest23111-21crond09:16:462
2535399825,63cyclictest0-21swapper/107:07:101
2535399825,63cyclictest0-21swapper/107:07:101
2535399824,71cyclictest0-21swapper/108:09:431
2535399824,71cyclictest0-21swapper/107:37:091
2535399823,73cyclictest0-21swapper/109:51:541
2535399823,73cyclictest0-21swapper/109:51:541
2535399823,73cyclictest0-21swapper/108:46:311
2535399823,72cyclictest30363-21cpuspeed09:26:581
2535399823,72cyclictest19391-21gltestperf08:22:071
2535399823,71cyclictest19145-21ssh07:32:551
2535399823,70cyclictest0-21swapper/108:39:571
2535499813,26cyclictest0-21swapper/210:06:562
2535399816,60cyclictest0-21swapper/109:31:571
2535399813,71cyclictest0-21swapper/108:58:431
2535399813,69cyclictest29654-21awk10:12:131
25354998028,14cyclictest0-21swapper/205:37:112
2535399804,68cyclictest0-21swapper/105:42:131
2535399804,55cyclictest0-21swapper/109:57:191
2535399804,55cyclictest0-21swapper/109:57:191
2535399804,44cyclictest0-21swapper/109:47:121
2535399803,71cyclictest0-21swapper/106:52:091
2535399803,70cyclictest4248-21sendmail_mailqu05:07:241
2535399803,70cyclictest4248-21sendmail_mailqu05:07:241
2535399803,70cyclictest20351-21tr09:11:591
2535399803,70cyclictest20351-21tr09:11:591
2535399803,64cyclictest0-21swapper/107:03:391
2535399803,43cyclictest0-21swapper/107:52:181
2535399794,68cyclictest0-21swapper/109:05:421
2535399794,56cyclictest28441-21ssh07:01:291
2535399793,69cyclictest282001ssh08:36:071
2535399793,69cyclictest282001ssh08:36:071
2535399793,69cyclictest0-21swapper/108:50:481
2535399793,68cyclictest0-21swapper/108:02:341
2535499784,26cyclictest0-21swapper/209:46:232
2535399784,67cyclictest0-21swapper/105:32:271
2535399784,66cyclictest24594-21grep07:42:051
2535399784,58cyclictest0-21swapper/110:07:121
2535399783,59cyclictest12726-21ssh08:12:091
2535399783,54cyclictest0-21swapper/105:37:061
2535399783,47cyclictest4118-21ssh07:59:251
2535499774,26cyclictest0-21swapper/208:35:232
2535499774,26cyclictest0-21swapper/208:35:232
2535499773,27cyclictest0-21swapper/207:26:542
2535399774,57cyclictest0-21swapper/104:51:571
2535399774,55cyclictest0-21swapper/109:40:141
2535399774,37cyclictest16635-21munin-node09:07:111
2535399773,52cyclictest22677-21fschecks_time05:47:111
2535399773,52cyclictest22677-21fschecks_time05:47:111
2535399764,64cyclictest29826-21fschecks_time06:02:121
2535399763,66cyclictest0-21swapper/107:30:561
2535399763,65cyclictest7801-21cpu05:17:081
2535499754,24cyclictest0-21swapper/209:00:192
2535399754,64cyclictest1219-21munin-run06:11:531
2535399754,64cyclictest0-21swapper/104:57:211
2535399753,66cyclictest0-21swapper/106:42:041
2535399753,66cyclictest0-21swapper/105:02:071
2535399753,66cyclictest0-21swapper/105:02:071
2535399753,65cyclictest11196-21aten2.4-expect06:32:041
2535399743,53cyclictest0-21swapper/104:52:211
2535399733,63cyclictest0-21swapper/106:16:541
2535399733,63cyclictest0-21swapper/106:01:321
2535399725,60cyclictest1243-21lldpd05:27:051
2535399724,61cyclictest0-21swapper/106:41:531
2535399724,61cyclictest0-21swapper/105:12:211
2535399714,43cyclictest1287-21snmpd05:52:111
2535399713,61cyclictest9434-21fschecks_time06:27:101
2535399713,61cyclictest9434-21fschecks_time06:27:101
2535399713,55cyclictest0-21swapper/106:17:111
2535399704,44cyclictest121850irq/46-eth006:22:041
2535099704,58cyclictest0-21swapper/009:06:460
2535099694,56cyclictest0-21swapper/007:02:070
248599690,8rtkit-daemon0-21swapper/309:49:133
2535099685,55cyclictest0-21swapper/009:12:050
2535099685,55cyclictest0-21swapper/009:12:050
2535099674,56cyclictest5604-21df_abs08:02:050
2535099674,55cyclictest0-21swapper/008:47:040
2535099674,55cyclictest0-21swapper/008:37:100
2535099674,55cyclictest0-21swapper/006:57:220
2535099674,54cyclictest0-21swapper/007:42:200
2535099664,56cyclictest0-21swapper/008:12:100
2535099664,54cyclictest0-21swapper/009:46:570
2535099664,54cyclictest0-21swapper/009:27:170
2535099655,51cyclictest0-21swapper/009:07:160
2535099654,54cyclictest0-21swapper/009:00:020
248599650,3rtkit-daemon34-21rcuc/309:12:073
248599650,3rtkit-daemon34-21rcuc/309:12:073
248599650,3rtkit-daemon0-21swapper/304:54:173
2535599648,31cyclictest0-21swapper/307:57:153
2535099644,52cyclictest0-21swapper/010:12:170
2535099644,52cyclictest0-21swapper/007:47:200
2535099643,53cyclictest0-21swapper/009:33:480
2535099643,53cyclictest0-21swapper/009:22:070
2535099643,52cyclictest1616-21aten2.4-expect07:57:010
76802633,51sleep00-21swapper/008:52:120
2535099634,51cyclictest0-21swapper/010:07:070
2535099634,50cyclictest0-21swapper/008:42:140
74612620,4sleep2281ktimersoftd/206:22:172
2535099624,50cyclictest0-21swapper/010:02:090
2535099624,50cyclictest0-21swapper/009:17:050
2535099624,50cyclictest0-21swapper/006:42:180
2535099624,49cyclictest30110-21ls04:56:560
248599620,8rtkit-daemon0-21swapper/306:31:353
248599620,8rtkit-daemon0-21swapper/306:31:353
248599620,8rtkit-daemon0-21swapper/305:58:143
248599620,8rtkit-daemon0-21swapper/305:01:323
248599620,7rtkit-daemon0-21swapper/305:53:443
248599620,7rtkit-daemon0-21swapper/305:16:383
248599620,6rtkit-daemon0-21swapper/308:40:533
248599620,4rtkit-daemon0-21swapper/305:21:013
240482623,50sleep30-21swapper/306:53:313
248599610,9rtkit-daemon0-21swapper/310:09:193
248599610,9rtkit-daemon0-21swapper/305:49:453
248599610,9rtkit-daemon0-21swapper/305:49:453
248599610,9rtkit-daemon0-21swapper/305:02:313
248599610,9rtkit-daemon0-21swapper/305:02:313
248599610,8rtkit-daemon0-21swapper/309:21:593
248599610,8rtkit-daemon0-21swapper/309:00:373
248599610,8rtkit-daemon0-21swapper/308:05:393
248599610,8rtkit-daemon0-21swapper/306:22:583
248599610,8rtkit-daemon0-21swapper/305:36:083
248599610,7rtkit-daemon0-21swapper/310:15:043
248599610,7rtkit-daemon0-21swapper/309:34:363
248599610,7rtkit-daemon0-21swapper/308:12:023
248599610,7rtkit-daemon0-21swapper/307:53:103
248599610,7rtkit-daemon0-21swapper/307:43:033
248599610,7rtkit-daemon0-21swapper/307:22:263
248599610,7rtkit-daemon0-21swapper/307:05:043
248599610,4rtkit-daemon2484-21rtkit-daemon05:25:533
248599610,4rtkit-daemon0-21swapper/308:25:163
248599610,4rtkit-daemon0-21swapper/307:14:193
248599610,4rtkit-daemon0-21swapper/307:09:273
248599610,4rtkit-daemon0-21swapper/307:09:273
248599610,3rtkit-daemon12-21rcu_preempt07:17:263
248599610,3rtkit-daemon0-21swapper/307:37:183
248599610,3rtkit-daemon0-21swapper/306:43:203
248599610,3rtkit-daemon0-21swapper/306:41:203
248599610,3rtkit-daemon0-21swapper/306:19:213
21282614,50sleep00-21swapper/007:08:350
21282614,50sleep00-21swapper/007:08:350
2535099604,49cyclictest0-21swapper/009:58:520
2535099604,49cyclictest0-21swapper/009:58:520
2535099603,50cyclictest0-21swapper/009:52:170
2535099603,50cyclictest0-21swapper/009:52:170
2535099603,49cyclictest0-21swapper/007:38:310
248599600,9rtkit-daemon0-21swapper/306:34:283
248599600,9rtkit-daemon0-21swapper/305:10:243
248599600,9rtkit-daemon0-21swapper/305:10:243
248599600,8rtkit-daemon0-21swapper/308:47:153
248599600,8rtkit-daemon0-21swapper/306:59:043
248599600,8rtkit-daemon0-21swapper/304:47:023
248599600,7rtkit-daemon0-21swapper/310:05:053
248599600,7rtkit-daemon0-21swapper/309:52:503
248599600,7rtkit-daemon0-21swapper/309:52:503
248599600,7rtkit-daemon0-21swapper/309:41:063
248599600,7rtkit-daemon0-21swapper/308:52:303
248599600,7rtkit-daemon0-21swapper/308:45:533
248599600,7rtkit-daemon0-21swapper/308:36:083
248599600,7rtkit-daemon0-21swapper/308:36:083
248599600,7rtkit-daemon0-21swapper/307:34:183
248599600,7rtkit-daemon0-21swapper/305:37:383
248599600,6rtkit-daemon0-21swapper/308:30:383
248599600,6rtkit-daemon0-21swapper/308:17:243
248599600,4rtkit-daemon0-21swapper/309:43:203
248599600,4rtkit-daemon0-21swapper/307:27:483
248599600,4rtkit-daemon0-21swapper/305:29:303
248599600,3rtkit-daemon0-21swapper/309:58:123
248599600,3rtkit-daemon0-21swapper/309:58:123
248599600,3rtkit-daemon0-21swapper/309:06:293
248599600,3rtkit-daemon0-21swapper/308:09:173
248599600,3rtkit-daemon0-21swapper/307:47:483
248599600,3rtkit-daemon0-21swapper/306:49:273
248599600,3rtkit-daemon0-21swapper/305:43:303
248599600,2rtkit-daemon0-21swapper/309:29:143
196872603,51sleep00-21swapper/007:34:560
2535099594,48cyclictest0-21swapper/008:22:140
2535099594,47cyclictest0-21swapper/006:52:080
2535099594,47cyclictest0-21swapper/006:47:200
248599590,8rtkit-daemon0-21swapper/309:07:143
248599590,7rtkit-daemon0-21swapper/309:18:213
2535399584,47cyclictest0-21swapper/104:46:571
2535099584,46cyclictest0-21swapper/008:07:160
25350995839,12cyclictest7235-21gltestperf06:22:120
2535099583,49cyclictest0-21swapper/007:30:420
2535099583,48cyclictest0-21swapper/007:53:480
2535099583,47cyclictest0-21swapper/005:07:230
2535099583,47cyclictest0-21swapper/005:07:230
25350995826,25cyclictest0-21swapper/008:27:010
2535499573,46cyclictest0-21swapper/209:57:182
2535499573,46cyclictest0-21swapper/209:57:182
2535499573,37cyclictest0-21swapper/205:27:172
2535499573,13cyclictest0-21swapper/206:27:082
2535499573,13cyclictest0-21swapper/206:27:082
2535099574,46cyclictest0-21swapper/007:20:500
63332563,12sleep00-21swapper/007:15:370
2535099564,27cyclictest0-21swapper/009:40:530
2535099554,41cyclictest0-21swapper/009:41:540
2535099554,16cyclictest0-21swapper/008:17:050
2535099553,10cyclictest0-21swapper/008:32:150
2535099553,10cyclictest0-21swapper/008:32:150
73472542,9sleep00-21swapper/005:16:450
25354995430,10cyclictest0-21swapper/208:05:332
2535499543,43cyclictest0-21swapper/207:32:012
2535099544,45cyclictest0-21swapper/004:57:220
2535099543,44cyclictest0-21swapper/006:27:110
2535099543,44cyclictest0-21swapper/006:27:110
2535099534,42cyclictest0-21swapper/005:37:260
2535099534,12cyclictest0-21swapper/007:22:210
2535099533,44cyclictest0-21swapper/006:35:330
2535099533,44cyclictest0-21swapper/006:02:240
2535099533,44cyclictest0-21swapper/005:32:180
2535099533,42cyclictest0-21swapper/006:21:520
248599530,6rtkit-daemon2484-21rtkit-daemon06:12:062
248599530,5rtkit-daemon2484-21rtkit-daemon09:38:132
299962524,42sleep330053-21cat06:02:153
2535099524,41cyclictest0-21swapper/005:42:220
2535099523,44cyclictest0-21swapper/005:17:150
248599520,4rtkit-daemon2484-21rtkit-daemon06:02:222
234342523,9sleep023538-21timerwakeupswit05:47:250
234342523,9sleep023538-21timerwakeupswit05:47:250
17512524,40sleep00-21swapper/005:02:260
17512524,40sleep00-21swapper/005:02:260
119132524,40sleep00-21swapper/005:24:030
36482512,43sleep00-21swapper/006:15:420
305712512,41sleep20-21swapper/208:37:312
25355995133,11cyclictest1780-21tr06:12:073
2535499514,13cyclictest0-21swapper/209:32:002
25354995132,13cyclictest0-21swapper/205:07:202
25354995132,13cyclictest0-21swapper/205:07:202
2535099514,29cyclictest0-21swapper/005:27:240
2535099513,42cyclictest0-21swapper/006:07:190
2535099513,13cyclictest0-21swapper/005:52:130
208462512,43sleep20-21swapper/205:42:232
2535499503,27cyclictest0-21swapper/207:57:052
2535099503,42cyclictest0-21swapper/005:58:360
2535599494,27cyclictest0-21swapper/306:07:143
2535499495,38cyclictest0-21swapper/206:56:232
2535499495,27cyclictest0-21swapper/205:57:122
2535499493,38cyclictest0-21swapper/205:22:232
2535099494,38cyclictest0-21swapper/006:37:270
2535499485,11cyclictest0-21swapper/209:47:152
2535499484,27cyclictest0-21swapper/207:26:332
2535499484,27cyclictest0-21swapper/205:32:272
2535499484,27cyclictest0-21swapper/204:57:252
2535099483,40cyclictest0-21swapper/004:48:560
2535499474,26cyclictest0-21swapper/210:11:592
2535499474,26cyclictest0-21swapper/204:47:092
25354994718,11cyclictest0-21swapper/205:17:092
2535499464,26cyclictest0-21swapper/205:47:072
2535499464,26cyclictest0-21swapper/205:47:072
2535499464,26cyclictest0-21swapper/205:14:482
25354994528,9cyclictest0-21swapper/204:46:562
25354994518,12cyclictest0-21swapper/205:04:462
25354994518,12cyclictest0-21swapper/205:04:462
58142442,36sleep20-21swapper/206:17:502
25354994417,12cyclictest0-21swapper/206:32:202
248222434,31sleep00-21swapper/004:42:240
248599400,4rtkit-daemon2484-21rtkit-daemon04:45:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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