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2026-07-27 - 20:54

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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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack1slot6s.osadl.org (updated Mon Jul 27, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15109991035,35cyclictest0-21swapper/009:55:390
15109991034,90cyclictest0-21swapper/011:09:270
1510999983,8cyclictest1227-21runrttasks10:08:100
1511299944,82cyclictest0-21swapper/207:31:042
1511299944,26cyclictest0-21swapper/206:16:412
1510999944,27cyclictest0-21swapper/007:04:250
1510999944,27cyclictest0-21swapper/007:04:250
1510999944,26cyclictest0-21swapper/010:33:390
1510999943,85cyclictest0-21swapper/009:11:080
1510999943,84cyclictest7846-21diskmemload09:44:280
1510999943,84cyclictest7846-21diskmemload09:44:280
1511299937,21cyclictest0-21swapper/209:09:172
1511299934,27cyclictest0-21swapper/210:54:062
1511299934,26cyclictest0-21swapper/210:39:372
1510999933,82cyclictest23302-21uniq10:14:130
1511299925,21cyclictest0-21swapper/208:49:212
1511299924,27cyclictest0-21swapper/209:58:322
1511299924,26cyclictest0-21swapper/208:39:292
1511299923,71cyclictest0-21swapper/210:31:592
1510999925,26cyclictest0-21swapper/009:04:210
1510999925,26cyclictest0-21swapper/009:04:210
1510999924,80cyclictest0-21swapper/009:35:430
1510999924,24cyclictest0-21swapper/010:34:130
1510999923,21cyclictest19046-21ssh09:19:100
15109999225,11cyclictest21133-21unixbench-2d10:09:290
1511299915,24cyclictest0-21swapper/211:01:532
1511299915,24cyclictest0-21swapper/209:07:162
1511299915,24cyclictest0-21swapper/209:07:162
1511299914,25cyclictest0-21swapper/211:24:302
1510999914,80cyclictest0-21swapper/009:25:080
1511299904,79cyclictest0-21swapper/208:21:512
1511299903,23cyclictest24779-21ssh11:04:252
1511299903,23cyclictest24779-21ssh11:04:252
1510999905,77cyclictest0-21swapper/011:30:360
1510999904,29cyclictest0-21swapper/006:54:370
15109999033,51cyclictest0-21swapper/010:19:320
1510999903,80cyclictest0-21swapper/011:34:060
1510999903,24cyclictest0-21swapper/010:58:330
1511299895,28cyclictest0-21swapper/210:44:032
1511299894,28cyclictest0-21swapper/208:54:402
1511299894,28cyclictest0-21swapper/208:04:282
1511299894,24cyclictest0-21swapper/211:21:312
1511299894,23cyclictest1124-21snmpd10:15:322
1510999894,28cyclictest0-21swapper/011:42:280
1510999893,77cyclictest0-21swapper/011:19:080
15109998913,10cyclictest107550irq/46-eth010:39:160
1511299885,74cyclictest0-21swapper/210:06:462
1511299885,26cyclictest0-21swapper/209:14:342
1511299885,22cyclictest0-21swapper/209:34:402
1511299885,15cyclictest0-21swapper/210:34:172
1511299884,77cyclictest0-21swapper/209:59:302
1511299884,76cyclictest0-21swapper/210:10:392
1511299884,26cyclictest0-21swapper/209:47:272
1511299884,26cyclictest0-21swapper/209:47:272
15112998820,12cyclictest0-21swapper/208:59:542
15112998810,70cyclictest0-21swapper/208:35:342
1510999886,23cyclictest107550irq/46-eth008:56:430
1510999886,21cyclictest0-21swapper/009:49:580
1510999884,77cyclictest0-21swapper/009:39:110
1510999884,36cyclictest0-21swapper/010:59:190
1510999884,33cyclictest0-21swapper/008:59:220
1510999884,32cyclictest0-21swapper/008:30:380
1510999884,26cyclictest0-21swapper/009:31:540
1510999884,14cyclictest0-21swapper/008:28:370
1510999884,14cyclictest0-21swapper/008:28:370
1510999883,78cyclictest0-21swapper/007:54:190
201062870,7sleep120105-21needreboot09:19:221
1511299878,24cyclictest0-21swapper/208:28:012
1511299878,24cyclictest0-21swapper/208:28:012
1511299875,75cyclictest0-21swapper/209:24:042
1511299875,27cyclictest0-21swapper/210:21:192
1511299874,26cyclictest0-21swapper/211:39:162
1511299874,26cyclictest0-21swapper/208:48:142
1511299873,76cyclictest31057-21netstat11:14:202
15112998712,8cyclictest32162-21ssh09:39:112
1510999877,22cyclictest0-21swapper/010:48:530
1510999874,12cyclictest0-21swapper/010:24:280
1510999874,12cyclictest0-21swapper/010:24:280
15109998715,9cyclictest107550irq/46-eth008:49:240
1511299864,75cyclictest12236-21df07:14:192
1511299864,74cyclictest0-21swapper/209:29:122
1511299864,26cyclictest0-21swapper/211:09:242
1510999864,26cyclictest0-21swapper/010:01:590
1510999864,10cyclictest0-21swapper/008:38:330
1510999863,40cyclictest0-21swapper/011:15:460
1510999863,32cyclictest9321-21needreboot08:14:260
1511299858,23cyclictest0-21swapper/209:51:272
1511299855,72cyclictest0-21swapper/211:34:262
1511299855,24cyclictest0-21swapper/208:29:262
1511299854,74cyclictest0-21swapper/210:24:202
1511299854,74cyclictest0-21swapper/210:24:202
1511299853,25cyclictest0-21swapper/211:29:402
1510999854,13cyclictest0-21swapper/011:24:030
1511299844,72cyclictest0-21swapper/208:19:002
1511299844,25cyclictest0-21swapper/209:19:042
1511299843,27cyclictest0-21swapper/207:04:032
1510999844,25cyclictest0-21swapper/008:22:380
1510999844,22cyclictest0-21swapper/008:40:160
1510999844,12cyclictest0-21swapper/006:59:280
1510999843,24cyclictest0-21swapper/011:04:550
1510999843,24cyclictest0-21swapper/011:04:550
15109998423,13cyclictest0-21swapper/010:49:110
1511299835,69cyclictest0-21swapper/207:44:172
1510999834,25cyclictest0-21swapper/008:46:090
15109998330,10cyclictest26364-21grep07:44:160
15109998328,9cyclictest18516-21grep06:19:240
1511299824,71cyclictest0-21swapper/207:39:352
1511299823,25cyclictest0-21swapper/210:49:262
15109998125,10cyclictest29222-21gltestperf07:49:230
15109998125,10cyclictest29222-21gltestperf07:49:230
219499800,7rtkit-daemon0-21swapper/306:30:030
1511299803,70cyclictest0-21swapper/206:44:032
1511299803,69cyclictest0-21swapper/206:58:072
1510999804,27cyclictest0-21swapper/007:34:190
1510999804,12cyclictest0-21swapper/007:19:320
15109998025,10cyclictest17150-21sed09:14:310
15112997913,14cyclictest0-21swapper/207:24:212
1510999794,28cyclictest0-21swapper/006:24:240
1510999794,28cyclictest0-21swapper/006:24:240
15109997927,8cyclictest18231-21grep07:24:350
1510999792,69cyclictest0-21swapper/006:39:350
1511299789,22cyclictest0-21swapper/206:19:242
1511299784,67cyclictest0-21swapper/207:09:152
15112997817,13cyclictest0-21swapper/206:29:392
1511299775,9cyclictest31714-21sed07:54:202
15112997710,13cyclictest0-21swapper/208:13:592
1511299764,22cyclictest7615-21tune2fs07:04:212
1511299764,22cyclictest7615-21tune2fs07:04:212
1511299764,10cyclictest15758-21unixbench-2d07:19:332
1511299763,28cyclictest27020-21crond06:39:032
1511299763,22cyclictest0-21swapper/207:50:332
1511299763,22cyclictest0-21swapper/207:50:332
1510999764,30cyclictest0-21swapper/007:39:130
15109997628,9cyclictest13265-21cat07:14:350
1511299753,22cyclictest0-21swapper/208:03:062
1511299745,26cyclictest0-21swapper/206:44:212
15112997413,18cyclictest21295-21aten_r1power_en07:34:132
1511399739,50cyclictest0-21swapper/308:54:463
1511299734,24cyclictest1002-21sshd06:28:402
1511299734,24cyclictest1002-21sshd06:28:402
15112997321,9cyclictest1227-21runrttasks06:51:142
1511399724,59cyclictest0-21swapper/309:29:293
1511399684,55cyclictest0-21swapper/310:39:223
1511399675,53cyclictest0-21swapper/310:22:413
1511399664,54cyclictest0-21swapper/309:54:483
1511399654,53cyclictest29799-21head06:44:163
1511199653,55cyclictest23558-21gltestperf10:14:151
1511399644,52cyclictest24038-21gltestperf11:04:123
1511399644,52cyclictest24038-21gltestperf11:04:123
1511399644,51cyclictest0-21swapper/309:24:133
1511199643,56cyclictest0-21swapper/109:09:311
15111996421,23cyclictest1547-21nscd08:24:191
15111996421,23cyclictest1547-21nscd08:24:191
15111996420,23cyclictest0-21swapper/108:48:401
1511399634,52cyclictest0-21swapper/309:09:323
1511399634,51cyclictest0-21swapper/309:44:123
1511399634,51cyclictest0-21swapper/309:44:123
1511399634,50cyclictest0-21swapper/308:14:263
1511199634,52cyclictest0-21swapper/110:44:341
1511199633,54cyclictest0-21swapper/111:40:081
1511199633,54cyclictest0-21swapper/110:48:591
1511199633,53cyclictest0-21swapper/109:44:081
1511199633,53cyclictest0-21swapper/109:44:081
143722634,52sleep014484-21timerandwakeup06:09:320
1511199624,40cyclictest0-21swapper/110:01:021
1511199623,52cyclictest0-21swapper/110:24:131
1511199623,52cyclictest0-21swapper/110:24:131
15111996215,20cyclictest0-21swapper/111:34:041
208852612,10sleep30-21swapper/309:20:063
1511399614,49cyclictest0-21swapper/306:39:353
1511399613,50cyclictest0-21swapper/309:49:243
1511199613,53cyclictest0-21swapper/110:12:281
1511199612,53cyclictest0-21swapper/111:26:311
1511399604,49cyclictest0-21swapper/310:54:463
1511399603,51cyclictest0-21swapper/308:34:273
1511399603,50cyclictest0-21swapper/311:29:193
15113996012,38cyclictest0-21swapper/310:44:103
1511199604,47cyclictest0-21swapper/109:54:321
1511399594,48cyclictest29845-21latency09:34:213
15113995921,30cyclictest29399-21needreboot08:44:263
1511299595,15cyclictest0-21swapper/206:14:042
1511199594,46cyclictest0-21swapper/109:29:171
1511199594,35cyclictest0-21swapper/109:35:381
1511199594,29cyclictest0-21swapper/107:49:371
1511199594,29cyclictest0-21swapper/107:49:371
1511199593,49cyclictest32556-21munin-node10:29:071
1511399584,47cyclictest1892-21tail10:29:303
1511399584,46cyclictest0-21swapper/311:15:393
1511399583,49cyclictest0-21swapper/310:11:243
1511399583,47cyclictest5068-21if_eth011:24:143
1511399582,9cyclictest0-21swapper/309:00:443
1511199585,29cyclictest0-21swapper/108:19:251
1511199585,28cyclictest0-21swapper/110:04:501
1511199585,28cyclictest0-21swapper/107:09:381
1511199584,45cyclictest0-21swapper/111:09:041
1511199584,29cyclictest0-21swapper/108:29:231
1511199584,29cyclictest0-21swapper/107:19:211
15111995821,14cyclictest0-21swapper/108:54:101
15111995818,14cyclictest16480-21cut09:14:191
15113995740,10cyclictest12561-21gltestperf07:14:233
1511399574,46cyclictest0-21swapper/311:01:223
1511399574,45cyclictest0-21swapper/310:49:233
1511399573,48cyclictest0-21swapper/310:14:063
1511199575,44cyclictest0-21swapper/108:18:591
1511199575,29cyclictest0-21swapper/110:37:341
1511199575,28cyclictest0-21swapper/107:04:191
1511199575,28cyclictest0-21swapper/107:04:191
1511199575,28cyclictest0-21swapper/106:34:371
1511199575,27cyclictest0-21swapper/109:51:341
1511199574,30cyclictest0-21swapper/110:19:091
1511199574,29cyclictest0-21swapper/107:54:551
1511199574,29cyclictest0-21swapper/106:44:221
1511199574,27cyclictest0-21swapper/108:53:091
1511199573,48cyclictest0-21swapper/111:08:461
1511199573,48cyclictest0-21swapper/111:08:461
1511199573,47cyclictest0-21swapper/110:39:161
15111995728,12cyclictest0-21swapper/108:34:121
15111995723,14cyclictest0-21swapper/111:14:121
15111995721,11cyclictest1124-21snmpd11:23:021
101252574,10sleep10-21swapper/109:04:241
101252574,10sleep10-21swapper/109:04:241
1511399565,43cyclictest0-21swapper/309:04:263
1511399565,43cyclictest0-21swapper/309:04:263
1511399564,43cyclictest2110-21tail06:54:123
1511399563,47cyclictest26745-21yum08:39:353
1511399563,47cyclictest0-21swapper/308:20:423
1511399563,46cyclictest1705-21iostat_ios11:19:173
1511399562,48cyclictest0-21swapper/308:24:263
1511399562,48cyclictest0-21swapper/308:24:263
1511199566,28cyclictest0-21swapper/111:28:561
1511199565,28cyclictest0-21swapper/107:31:371
1511199565,27cyclictest0-21swapper/110:54:281
1511199564,31cyclictest0-21swapper/108:40:271
1511199564,28cyclictest0-21swapper/106:29:191
1511199564,27cyclictest0-21swapper/109:28:211
15111995621,12cyclictest0-21swapper/108:04:191
15111995619,14cyclictest0-21swapper/109:00:221
34862553,45sleep30-21swapper/310:34:003
213622553,45sleep10-21swapper/106:24:311
213622553,45sleep10-21swapper/106:24:311
172282554,45sleep10-21swapper/106:15:521
1511399554,36cyclictest0-21swapper/311:10:063
1511399554,31cyclictest29362-21telnet10:24:073
1511399554,31cyclictest29362-21telnet10:24:073
1511399554,30cyclictest0-21swapper/310:08:543
1511399553,44cyclictest7356-21sed08:09:343
15113995513,35cyclictest32526-21latency08:49:233
1511199555,30cyclictest0-21swapper/110:59:231
1511199555,29cyclictest0-21swapper/107:24:141
1511199554,28cyclictest0-21swapper/106:54:371
1511199554,28cyclictest0-21swapper/106:24:041
1511199554,26cyclictest348-21perl09:39:171
15111995522,13cyclictest1227-21runrttasks08:09:121
15113995421,14cyclictest0-21swapper/307:34:253
1511199543,44cyclictest0-21swapper/106:14:051
15111995420,13cyclictest0-21swapper/107:44:201
52972534,42sleep10-21swapper/106:59:221
245402533,9sleep30-21swapper/306:32:563
219499530,5rtkit-daemon2193-21rtkit-daemon07:44:001
1511399535,30cyclictest0-21swapper/308:29:153
1511399535,28cyclictest0-21swapper/306:19:423
1511399534,41cyclictest0-21swapper/307:49:413
1511399534,41cyclictest0-21swapper/307:49:413
1511399534,30cyclictest0-21swapper/307:09:023
1511399534,30cyclictest0-21swapper/307:09:023
1511399534,21cyclictest0-21swapper/311:42:593
15113995335,10cyclictest10512-21needreboot07:09:273
15113995319,15cyclictest0-21swapper/307:29:383
15111995337,10cyclictest23003-21unixbench_singl07:34:351
314382523,42sleep331564-21perl07:54:193
1511399525,38cyclictest0-21swapper/307:59:253
1511399524,9cyclictest327-21perl09:39:173
15113995232,11cyclictest26617-21unixbench_singl06:34:383
15113995227,15cyclictest0-21swapper/306:24:363
15113995227,15cyclictest0-21swapper/306:24:363
1511399522,44cyclictest0-21swapper/307:44:133
1511399515,28cyclictest0-21swapper/306:14:183
1511399514,41cyclictest0-21swapper/309:14:533
1511399514,39cyclictest10693-21munin-node11:34:033
1511399514,39cyclictest0-21swapper/306:14:053
1511399514,38cyclictest0-21swapper/306:49:183
15113995131,12cyclictest5332-21gltestperf06:59:223
1511399513,41cyclictest12898-21ssh09:59:083
1511399512,10cyclictest0-21swapper/308:04:163
15113995110,34cyclictest17796-21proc_pri07:24:293
1511199514,20cyclictest0-21swapper/106:39:251
1510999514,27cyclictest0-21swapper/008:04:360
1510999513,8cyclictest31303-21grep06:44:370
1511199504,39cyclictest0-21swapper/107:14:301
1511199504,27cyclictest0-21swapper/106:49:321
1510999504,28cyclictest0-21swapper/007:59:170
1510999503,41cyclictest0-21swapper/007:10:010
1510999503,27cyclictest0-21swapper/008:09:130
257052482,11sleep30-21swapper/307:43:063
1510999474,13cyclictest0-21swapper/007:29:310
1510999473,39cyclictest0-21swapper/006:14:060
1510999473,38cyclictest0-21swapper/006:34:340
144762473,8sleep314518-21df_abs07:19:163
1511199464,23cyclictest0-21swapper/107:59:131
1510999464,12cyclictest0-21swapper/006:51:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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