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2026-08-11 - 15:52

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 792 highest latencies:
System rack1slot6s.osadl.org (updated Tue Aug 11, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23672991077,47cyclictest1227-21runrttasks10:55:300
236729910414,46cyclictest0-21swapper/011:25:000
725921010,4sleep37254-21ssh10:10:203
23673991018,85cyclictest22426-21gltestperf09:45:101
23673991014,48cyclictest15001-21aten_r1power_en09:35:021
236729910116,44cyclictest19725-21seq08:51:230
2194991010,7rtkit-daemon0-21swapper/208:20:522
2367599974,28cyclictest0-21swapper/307:20:223
2367399974,45cyclictest0-21swapper/108:10:171
2367399973,10cyclictest0-21swapper/111:21:311
23673999630,13cyclictest0-21swapper/109:41:251
2367599954,24cyclictest0-21swapper/309:50:013
23675999529,8cyclictest21567-21ssh11:21:323
2367399954,43cyclictest0-21swapper/110:13:331
2367599935,29cyclictest0-21swapper/310:04:493
2367599933,9cyclictest9542-21unixbench_singl08:35:283
2367599933,9cyclictest9542-21unixbench_singl08:35:283
2367399933,49cyclictest0-21swapper/109:25:131
2367399933,44cyclictest0-21swapper/109:55:201
2367399933,44cyclictest0-21swapper/109:55:201
2367599924,35cyclictest32388-21df10:50:033
23675999221,13cyclictest0-21swapper/308:15:133
23675999220,28cyclictest5242-21fschecks_time08:30:093
23673999232,7cyclictest23710-21interrupts11:25:071
2367399923,43cyclictest0-21swapper/110:40:081
2367599914,27cyclictest0-21swapper/311:00:213
23675999125,12cyclictest0-21swapper/308:25:133
2367599904,28cyclictest0-21swapper/309:40:183
2367599904,28cyclictest0-21swapper/307:55:153
2367599904,28cyclictest0-21swapper/307:55:153
23673999033,9cyclictest8648-21gltestperf08:35:141
23673999033,9cyclictest8648-21gltestperf08:35:141
23675998921,13cyclictest0-21swapper/308:02:033
23675998912,11cyclictest0-21swapper/310:48:073
2367399893,45cyclictest0-21swapper/108:30:081
2367599884,28cyclictest0-21swapper/310:15:163
2367599884,27cyclictest0-21swapper/309:55:193
2367599884,27cyclictest0-21swapper/309:55:193
23673998834,9cyclictest1205-21telnet08:25:081
2367399883,47cyclictest0-21swapper/109:08:301
2367599874,24cyclictest0-21swapper/309:30:563
23675998726,19cyclictest4674-21ssh10:06:543
23675998718,13cyclictest0-21swapper/308:40:053
2367399873,45cyclictest0-21swapper/111:18:441
23673998727,12cyclictest0-21swapper/109:32:291
219499870,4rtkit-daemon2193-21rtkit-daemon06:42:410
2367599868,21cyclictest0-21swapper/309:38:133
2367599864,27cyclictest0-21swapper/306:38:273
2367599864,12cyclictest0-21swapper/310:39:483
2367599863,30cyclictest0-21swapper/308:09:253
23675998621,12cyclictest0-21swapper/309:49:493
2367599855,27cyclictest0-21swapper/307:44:073
2367599854,27cyclictest0-21swapper/310:25:203
2367599844,22cyclictest0-21swapper/311:11:263
23675998430,12cyclictest0-21swapper/309:25:143
2367399843,44cyclictest0-21swapper/106:00:181
2367599835,27cyclictest0-21swapper/308:20:093
2367599834,31cyclictest0-21swapper/308:10:563
2367599834,28cyclictest0-21swapper/311:09:463
2367599834,28cyclictest0-21swapper/311:09:463
23675998320,13cyclictest0-21swapper/306:40:093
2367399833,45cyclictest0-21swapper/106:55:231
23675998222,9cyclictest26981-21ssh09:03:593
2367399822,47cyclictest0-21swapper/108:40:121
2367599814,27cyclictest0-21swapper/311:25:153
2367599814,27cyclictest0-21swapper/310:44:203
2367599812,45cyclictest0-21swapper/308:55:293
23673998126,10cyclictest0-21swapper/108:07:231
2367399803,11cyclictest0-21swapper/110:02:071
2367399803,10cyclictest0-21swapper/109:19:411
2367399803,10cyclictest0-21swapper/109:19:411
219499790,6rtkit-daemon2193-21rtkit-daemon08:33:440
2367599785,26cyclictest0-21swapper/309:13:433
2367399783,36cyclictest0-21swapper/110:05:141
219499780,6rtkit-daemon2193-21rtkit-daemon11:24:220
2367599773,27cyclictest0-21swapper/307:45:313
2367599773,26cyclictest0-21swapper/310:58:373
219499770,6rtkit-daemon2193-21rtkit-daemon08:29:070
219499760,5rtkit-daemon2193-21rtkit-daemon07:50:380
219499760,4rtkit-daemon2193-21rtkit-daemon10:26:550
219499760,4rtkit-daemon2193-21rtkit-daemon07:45:460
2367599754,27cyclictest0-21swapper/311:16:093
2367599754,27cyclictest0-21swapper/309:06:003
2367599754,21cyclictest18816-21munin-node10:30:163
219499740,14rtkit-daemon0-21swapper/208:40:212
153402720,4chrt15341-21latency_hist10:24:480
219499690,3rtkit-daemon0-21swapper/211:19:232
299762683,7sleep00-21swapper/010:45:170
219499680,5rtkit-daemon2193-21rtkit-daemon08:26:372
2367399673,57cyclictest0-21swapper/110:45:101
219499670,5rtkit-daemon2193-21rtkit-daemon10:50:312
219499670,5rtkit-daemon2193-21rtkit-daemon10:34:172
219499670,2rtkit-daemon0-21swapper/207:52:532
23672996616,44cyclictest8378-21open_inodes07:40:220
23672996616,44cyclictest8130-21latency_hist09:24:500
219499660,8rtkit-daemon0-21swapper/207:41:162
219499660,8rtkit-daemon0-21swapper/206:29:412
219499660,4rtkit-daemon2193-21rtkit-daemon09:36:342
219499660,3rtkit-daemon0-21swapper/207:21:392
219499650,8rtkit-daemon0-21swapper/211:08:382
219499650,8rtkit-daemon0-21swapper/211:08:382
219499650,8rtkit-daemon0-21swapper/209:45:042
219499650,7rtkit-daemon0-21swapper/207:11:022
219499650,5rtkit-daemon2193-21rtkit-daemon08:47:442
219499650,4rtkit-daemon0-21swapper/206:58:032
219499650,3rtkit-daemon0-21swapper/210:00:562
219499650,10rtkit-daemon0-21swapper/208:51:132
219499650,10rtkit-daemon0-21swapper/208:10:152
2367299645,52cyclictest0-21swapper/009:19:140
2367299645,52cyclictest0-21swapper/009:19:140
219499640,9rtkit-daemon0-21swapper/210:43:022
219499640,9rtkit-daemon0-21swapper/210:22:552
219499640,9rtkit-daemon0-21swapper/207:32:462
219499640,9rtkit-daemon0-21swapper/206:50:412
219499640,8rtkit-daemon0-21swapper/209:28:272
219499640,8rtkit-daemon0-21swapper/206:45:112
219499640,8rtkit-daemon0-21swapper/206:20:342
219499640,7rtkit-daemon0-21swapper/210:44:542
219499640,7rtkit-daemon0-21swapper/209:19:272
219499640,7rtkit-daemon0-21swapper/209:19:272
219499640,7rtkit-daemon0-21swapper/208:59:132
219499640,7rtkit-daemon0-21swapper/208:07:532
219499640,7rtkit-daemon0-21swapper/207:06:032
219499640,6rtkit-daemon0-21swapper/209:52:262
219499640,4rtkit-daemon0-21swapper/210:29:322
219499640,4rtkit-daemon0-21swapper/207:16:322
219499640,4rtkit-daemon0-21swapper/207:16:322
219499640,4rtkit-daemon0-21swapper/206:11:422
219499640,4rtkit-daemon0-21swapper/206:09:272
219499640,3rtkit-daemon0-21swapper/207:35:162
219499640,3rtkit-daemon0-21swapper/207:26:242
219499640,3rtkit-daemon0-21swapper/206:33:192
219499640,3rtkit-daemon0-21swapper/206:33:192
219499640,2rtkit-daemon0-21swapper/211:20:082
219499640,2rtkit-daemon0-21swapper/208:34:142
219499640,10rtkit-daemon0-21swapper/211:24:522
219499640,10rtkit-daemon0-21swapper/206:03:052
2367399634,51cyclictest0-21swapper/110:30:011
219499630,9rtkit-daemon0-21swapper/210:37:322
219499630,9rtkit-daemon0-21swapper/210:15:182
219499630,9rtkit-daemon0-21swapper/210:05:112
219499630,9rtkit-daemon0-21swapper/208:59:582
219499630,9rtkit-daemon0-21swapper/207:46:462
219499630,8rtkit-daemon0-21swapper/211:11:232
219499630,8rtkit-daemon0-21swapper/211:04:162
219499630,8rtkit-daemon0-21swapper/209:22:502
219499630,7rtkit-daemon0-21swapper/210:11:182
219499630,7rtkit-daemon0-21swapper/209:14:502
219499630,7rtkit-daemon0-21swapper/208:00:302
219499630,5rtkit-daemon0-21swapper/209:41:042
219499630,4rtkit-daemon0-21swapper/209:06:352
219499630,4rtkit-daemon0-21swapper/208:18:002
219499630,3rtkit-daemon0-21swapper/209:30:492
219499630,3rtkit-daemon0-21swapper/208:38:292
219499630,3rtkit-daemon0-21swapper/208:38:292
219499630,3rtkit-daemon0-21swapper/207:00:482
219499630,3rtkit-daemon0-21swapper/206:16:342
219499630,10rtkit-daemon0-21swapper/210:54:542
2367399624,51cyclictest19087-21awk08:50:241
2367399623,53cyclictest0-21swapper/109:04:221
2367299625,12cyclictest0-21swapper/011:15:190
219499620,9rtkit-daemon0-21swapper/209:54:562
219499620,9rtkit-daemon0-21swapper/209:54:562
219499620,8rtkit-daemon0-21swapper/207:55:012
219499620,8rtkit-daemon0-21swapper/207:55:012
219499620,8rtkit-daemon0-21swapper/206:40:192
219499620,7rtkit-daemon0-21swapper/206:35:262
304482615,49sleep00-21swapper/009:57:070
304482615,49sleep00-21swapper/009:57:070
2367399613,27cyclictest0-21swapper/106:29:501
2367399612,53cyclictest21609-21cut08:55:071
2367299615,50cyclictest0-21swapper/007:55:230
2367299615,50cyclictest0-21swapper/007:55:230
2367299615,49cyclictest0-21swapper/008:20:090
2367299605,49cyclictest0-21swapper/007:29:280
23675995936,10cyclictest0-21swapper/309:20:163
2367299595,47cyclictest0-21swapper/010:43:110
2367299595,47cyclictest0-21swapper/009:32:430
2367399583,48cyclictest0-21swapper/106:20:151
2367299584,9cyclictest19692-21cut10:30:070
2367299584,47cyclictest0-21swapper/008:40:310
2367299584,47cyclictest0-21swapper/008:06:520
2367399573,47cyclictest0-21swapper/107:20:241
2367299574,12cyclictest0-21swapper/011:10:000
23672995726,24cyclictest0-21swapper/009:25:120
219499570,6rtkit-daemon0-21swapper/206:05:353
16642573,10sleep00-21swapper/010:51:180
71442562,46sleep10-21swapper/109:21:081
45502564,10sleep00-21swapper/006:25:200
31832563,9sleep00-21swapper/006:23:350
293182562,47sleep10-21swapper/108:18:071
23675995626,13cyclictest0-21swapper/306:15:313
2367399563,45cyclictest22999-21gltestperf10:35:081
23673995628,13cyclictest0-21swapper/106:54:561
2367299565,44cyclictest0-21swapper/010:05:000
2367299565,44cyclictest0-21swapper/008:35:120
2367299565,44cyclictest0-21swapper/008:35:120
2367299564,47cyclictest0-21swapper/009:10:050
2367299564,46cyclictest0-21swapper/010:00:010
2367299563,9cyclictest0-21swapper/008:45:140
2367299563,8cyclictest20280-21yum-updatesd-he09:41:260
2367299563,11cyclictest0-21swapper/010:12:440
219499560,6rtkit-daemon0-21swapper/207:51:233
2367599553,38cyclictest0-21swapper/310:22:323
2367399553,47cyclictest0-21swapper/111:00:081
2367399553,46cyclictest0-21swapper/106:40:281
2367399553,45cyclictest0-21swapper/109:10:011
2367299554,44cyclictest0-21swapper/008:00:090
2367299554,10cyclictest0-21swapper/010:17:060
2367299553,8cyclictest0-21swapper/008:59:520
2367299553,12cyclictest0-21swapper/009:05:180
223852554,7sleep10-21swapper/105:55:151
23675995433,10cyclictest0-21swapper/306:00:213
2367399544,44cyclictest16407-21diskmemload10:54:451
2367399544,44cyclictest0-21swapper/110:55:011
2367399543,45cyclictest9657-21ssh11:04:591
2367399543,45cyclictest9657-21ssh11:04:591
2367399543,45cyclictest0-21swapper/108:20:341
2367399543,42cyclictest0-21swapper/110:20:021
2367299544,43cyclictest0-21swapper/008:55:010
2367299544,10cyclictest0-21swapper/009:46:120
2367299543,10cyclictest0-21swapper/011:02:040
2367299542,10cyclictest0-21swapper/011:05:010
2367299542,10cyclictest0-21swapper/011:05:010
2367599533,35cyclictest0-21swapper/308:49:003
23675995322,13cyclictest0-21swapper/308:50:223
2367399533,45cyclictest0-21swapper/107:16:531
2367399533,45cyclictest0-21swapper/107:16:531
2367399533,45cyclictest0-21swapper/106:35:301
2367299534,11cyclictest0-21swapper/009:51:470
2367299534,11cyclictest0-21swapper/008:16:380
23672995321,13cyclictest14957-21munin-node09:35:120
2367599524,28cyclictest0-21swapper/307:05:293
2367399523,9cyclictest16466-21chrt08:46:331
2367399523,44cyclictest0-21swapper/111:10:051
2367399523,44cyclictest0-21swapper/107:55:121
2367399523,44cyclictest0-21swapper/107:55:121
2367399523,43cyclictest0-21swapper/107:35:091
2367399523,43cyclictest0-21swapper/106:10:101
2367399523,11cyclictest0-21swapper/108:03:321
2367299526,27cyclictest0-21swapper/006:05:120
2367299523,12cyclictest0-21swapper/010:37:130
2367299523,10cyclictest5943-21aten2.4-expect06:30:050
2367299523,10cyclictest5943-21aten2.4-expect06:30:050
198352523,42sleep00-21swapper/006:57:330
64912513,42sleep00-21swapper/007:35:300
23675995130,10cyclictest0-21swapper/306:10:103
2367399513,10cyclictest0-21swapper/110:24:541
2367399512,43cyclictest0-21swapper/109:50:081
2367299516,26cyclictest0-21swapper/008:10:320
2367299514,26cyclictest0-21swapper/006:50:140
2367599507,37cyclictest0-21swapper/309:15:213
2367599507,37cyclictest0-21swapper/309:15:213
2367599504,28cyclictest0-21swapper/306:45:103
2367599504,28cyclictest0-21swapper/306:30:213
2367599504,28cyclictest0-21swapper/306:30:213
23675995025,13cyclictest0-21swapper/306:25:153
2367399503,42cyclictest0-21swapper/106:05:311
2367399503,41cyclictest10357-21open_inodes10:15:181
2367399503,41cyclictest0-21swapper/107:10:071
2367399503,41cyclictest0-21swapper/106:15:091
2367399502,42cyclictest0-21swapper/107:05:091
2367299505,9cyclictest1227-21runrttasks06:13:520
2367299504,26cyclictest0-21swapper/006:18:530
23672995025,11cyclictest0-21swapper/006:00:290
23672995015,29cyclictest308272sleep007:20:180
151762503,9sleep00-21swapper/006:49:140
2367599494,28cyclictest0-21swapper/307:25:153
2367599494,27cyclictest0-21swapper/306:50:083
2367599494,26cyclictest0-21swapper/307:15:163
2367599494,26cyclictest0-21swapper/307:15:163
23675994922,11cyclictest0-21swapper/307:13:453
2367399493,41cyclictest0-21swapper/107:02:121
2367399493,40cyclictest0-21swapper/107:29:051
2367399492,42cyclictest0-21swapper/106:30:221
2367399492,42cyclictest0-21swapper/106:30:221
23672994933,9cyclictest23453-21gltestperf07:05:150
2367599484,28cyclictest0-21swapper/306:58:593
2367599483,32cyclictest0-21swapper/306:20:103
23675994816,14cyclictest0-21swapper/307:35:063
2367399483,40cyclictest0-21swapper/107:31:101
2367399483,40cyclictest0-21swapper/106:47:341
2367399483,39cyclictest0-21swapper/107:50:051
292372473,9sleep00-21swapper/007:15:380
292372473,9sleep00-21swapper/007:15:380
2367399473,39cyclictest0-21swapper/107:43:271
2367399473,38cyclictest0-21swapper/107:45:121
23672994732,10cyclictest25883-21grep07:10:150
23672994715,14cyclictest0-21swapper/007:31:280
2367599463,24cyclictest0-21swapper/307:30:113
23675994625,10cyclictest0-21swapper/307:00:083
2367299454,24cyclictest0-21swapper/006:35:290
234212454,35sleep00-21swapper/005:57:110
222762453,9sleep00-21swapper/007:03:170
2367599434,12cyclictest0-21swapper/305:59:593
2367499374,13cyclictest0-21swapper/205:59:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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