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2026-06-23 - 09:12

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 376 highest latencies:
System rack1slot6s.osadl.org (updated Tue Jun 23, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2194991190,4rtkit-daemon2193-21rtkit-daemon21:57:511
10575991033,21cyclictest0-21swapper/000:12:410
1057599994,22cyclictest0-21swapper/022:43:550
1057599965,73cyclictest0-21swapper/022:16:400
1057599964,67cyclictest0-21swapper/021:46:420
1057599964,67cyclictest0-21swapper/021:46:420
1057599964,12cyclictest0-21swapper/022:40:510
10575999617,9cyclictest5535-21ssh23:58:500
1057599954,23cyclictest23912-21ssh22:51:330
10575999517,58cyclictest0-21swapper/023:33:100
1057599944,73cyclictest0-21swapper/021:43:190
1057599944,73cyclictest0-21swapper/021:43:190
1057599944,24cyclictest0-21swapper/021:52:540
1057599943,23cyclictest21115-21ssh21:11:380
10575999419,13cyclictest0-21swapper/021:26:380
1057599934,24cyclictest0-21swapper/022:50:130
1057599934,23cyclictest0-21swapper/022:16:220
10575999321,9cyclictest28413-21latency_hist20:31:260
10575999319,11cyclictest0-21swapper/020:05:000
10575999316,12cyclictest0-21swapper/022:25:000
1057599924,80cyclictest0-21swapper/021:06:370
1057599924,70cyclictest0-21swapper/022:04:560
1057599924,24cyclictest0-21swapper/023:16:510
1057599923,68cyclictest0-21swapper/023:49:570
1057599923,23cyclictest0-21swapper/021:16:580
10575999217,11cyclictest0-21swapper/021:23:010
1057599914,69cyclictest0-21swapper/023:11:450
1057599914,28cyclictest0-21swapper/021:31:370
1057599914,25cyclictest0-21swapper/023:01:030
1057599908,22cyclictest0-21swapper/022:29:300
1057599908,22cyclictest0-21swapper/022:29:300
1057599905,21cyclictest0-21swapper/000:06:340
1057599904,69cyclictest0-21swapper/020:51:290
1057599904,67cyclictest0-21swapper/021:36:530
1057599904,61cyclictest0-21swapper/019:36:290
1057599904,27cyclictest0-21swapper/022:06:510
1057599904,27cyclictest0-21swapper/020:25:590
1057599904,27cyclictest0-21swapper/020:25:590
1057599904,26cyclictest0-21swapper/023:53:400
1057599904,25cyclictest0-21swapper/023:25:410
1057599904,25cyclictest0-21swapper/021:56:310
1057599903,65cyclictest0-21swapper/023:26:470
1057599897,22cyclictest0-21swapper/023:44:590
1057599897,22cyclictest0-21swapper/023:44:590
1057599894,67cyclictest0-21swapper/019:26:480
1057599894,61cyclictest0-21swapper/020:16:430
1057599894,25cyclictest0-21swapper/000:01:310
1057599893,71cyclictest0-21swapper/020:57:080
1057599893,24cyclictest0-21swapper/022:34:140
1057599893,23cyclictest1124-21snmpd20:11:590
1057599884,26cyclictest0-21swapper/023:06:230
1057599884,26cyclictest0-21swapper/023:06:230
1057599883,22cyclictest0-21swapper/021:05:040
1057599883,22cyclictest0-21swapper/021:05:040
10575998821,50cyclictest0-21swapper/023:01:330
1057599874,73cyclictest0-21swapper/023:39:190
1057599874,25cyclictest0-21swapper/020:48:070
219499860,7rtkit-daemon0-21swapper/020:31:550
1057599864,73cyclictest0-21swapper/018:46:550
1057599864,26cyclictest0-21swapper/020:38:070
219499850,7rtkit-daemon0-21swapper/019:09:510
10575998519,10cyclictest0-21swapper/020:43:080
1057599844,26cyclictest0-21swapper/019:22:530
1057599844,23cyclictest0-21swapper/019:41:410
1057599844,16cyclictest0-21swapper/018:46:300
1057599834,25cyclictest0-21swapper/019:56:450
1057599833,72cyclictest10401-21tail19:51:460
10575998318,11cyclictest0-21swapper/019:02:480
10575998317,12cyclictest0-21swapper/020:06:530
219499820,23rtkit-daemon0-21swapper/020:25:401
219499820,23rtkit-daemon0-21swapper/020:25:401
1057599823,26cyclictest0-21swapper/019:36:530
10575998227,47cyclictest8921-21grep19:47:020
219499800,5rtkit-daemon2193-21rtkit-daemon22:35:121
219499790,5rtkit-daemon2193-21rtkit-daemon23:30:101
219499790,5rtkit-daemon2193-21rtkit-daemon22:03:291
1057599794,22cyclictest0-21swapper/018:57:580
1057599794,22cyclictest0-21swapper/018:57:580
1057599783,25cyclictest26859-21unixbench_singl19:17:020
1057599783,21cyclictest1227-21runrttasks19:12:520
219499770,6rtkit-daemon0-21swapper/323:25:413
219499770,5rtkit-daemon2193-21rtkit-daemon21:30:301
219499770,4rtkit-daemon2193-21rtkit-daemon22:24:051
219499760,5rtkit-daemon2193-21rtkit-daemon23:12:411
219499760,4rtkit-daemon2193-21rtkit-daemon22:55:271
1057599763,26cyclictest13237-21head18:51:410
219499740,4rtkit-daemon2193-21rtkit-daemon00:15:391
1057799738,56cyclictest0-21swapper/223:50:122
219499720,5rtkit-daemon2193-21rtkit-daemon23:19:561
219499720,4rtkit-daemon2193-21rtkit-daemon00:10:011
219499710,5rtkit-daemon2193-21rtkit-daemon23:46:321
219499710,5rtkit-daemon2193-21rtkit-daemon21:35:151
219499710,4rtkit-daemon2193-21rtkit-daemon22:57:491
219499710,4rtkit-daemon2193-21rtkit-daemon22:29:131
219499710,4rtkit-daemon2193-21rtkit-daemon22:29:131
219499700,4rtkit-daemon2193-21rtkit-daemon23:40:551
219499700,4rtkit-daemon2193-21rtkit-daemon00:00:241
10577997013,32cyclictest23639-21latency_hist20:21:272
10577996920,30cyclictest23665-21unixbench_multi23:36:552
219499680,5rtkit-daemon2193-21rtkit-daemon23:35:031
219499680,5rtkit-daemon2193-21rtkit-daemon23:02:561
219499670,5rtkit-daemon2193-21rtkit-daemon23:55:471
219499670,4rtkit-daemon2193-21rtkit-daemon21:39:301
10578996746,13cyclictest0-21swapper/322:46:213
219499660,5rtkit-daemon23168-21ssh21:13:232
219499660,5rtkit-daemon2193-21rtkit-daemon22:38:501
219499660,5rtkit-daemon2193-21rtkit-daemon21:46:291
219499660,5rtkit-daemon2193-21rtkit-daemon21:46:291
219499660,4rtkit-daemon2193-21rtkit-daemon23:06:561
219499660,4rtkit-daemon2193-21rtkit-daemon23:06:561
219499660,4rtkit-daemon2193-21rtkit-daemon22:15:431
219499660,4rtkit-daemon2193-21rtkit-daemon22:10:061
219499660,4rtkit-daemon2193-21rtkit-daemon00:02:321
10577996612,47cyclictest0-21swapper/220:45:472
10577996612,45cyclictest7371-21sed00:01:382
219499650,5rtkit-daemon2193-21rtkit-daemon23:45:171
219499650,5rtkit-daemon2193-21rtkit-daemon23:45:171
219499650,4rtkit-daemon2193-21rtkit-daemon22:16:431
219499640,4rtkit-daemon2193-21rtkit-daemon23:22:111
219499640,4rtkit-daemon2193-21rtkit-daemon22:48:571
219499640,4rtkit-daemon2193-21rtkit-daemon22:43:051
219499640,4rtkit-daemon2193-21rtkit-daemon21:54:071
219499640,4rtkit-daemon2193-21rtkit-daemon21:45:071
219499640,4rtkit-daemon2193-21rtkit-daemon21:45:071
10577996421,37cyclictest1227-21runrttasks23:25:392
10577996412,43cyclictest0-21swapper/221:26:462
219499630,5rtkit-daemon8263-21ssh20:51:541
1057799639,46cyclictest0-21swapper/221:19:172
1057799639,46cyclictest0-21swapper/220:46:542
10577996318,37cyclictest10819-21df_abs20:56:402
10577996311,34cyclictest0-21swapper/223:56:442
10578996243,12cyclictest0-21swapper/323:41:173
10577996210,45cyclictest0-21swapper/221:06:552
1057799614,35cyclictest0-21swapper/218:56:302
10577996117,37cyclictest21259-21gltestperf22:46:412
10577996112,41cyclictest28706-21ssh22:11:062
10577996111,43cyclictest0-21swapper/222:24:552
10577996111,43cyclictest0-21swapper/221:43:382
10577996111,43cyclictest0-21swapper/221:43:382
10578996037,15cyclictest0-21swapper/320:51:393
1057899603,48cyclictest0-21swapper/323:41:373
1057899603,48cyclictest0-21swapper/323:41:373
1057799609,33cyclictest0-21swapper/222:54:282
1057799607,46cyclictest0-21swapper/221:05:462
1057799607,46cyclictest0-21swapper/221:05:462
10577996017,25cyclictest1049-21iostat_ios22:16:442
10577996016,36cyclictest11102-21ssh22:31:412
10577996015,37cyclictest6973-21ssh20:51:372
320292597,13sleep30-21swapper/319:31:283
10578995942,11cyclictest0-21swapper/321:46:243
10578995942,11cyclictest0-21swapper/321:46:243
1057799599,43cyclictest0-21swapper/222:01:332
1057799596,46cyclictest0-21swapper/222:14:212
10577995916,36cyclictest27232-21aten2.4-expect22:56:322
10577995915,24cyclictest0-21swapper/200:15:172
10577995913,39cyclictest0-21swapper/222:41:222
10577995913,27cyclictest14329-21munin-node20:01:472
10577995913,15cyclictest0-21swapper/223:11:352
10577995912,39cyclictest0-21swapper/221:21:452
10577995911,42cyclictest0-21swapper/223:51:312
10577995910,41cyclictest0-21swapper/223:04:062
1057699594,13cyclictest0-21swapper/121:26:241
25622583,9sleep12695-21cut19:36:421
219499580,7rtkit-daemon0-21swapper/223:26:253
10578995841,10cyclictest16314-21crond00:16:173
1057799589,42cyclictest0-21swapper/223:31:382
1057799586,45cyclictest0-21swapper/223:08:332
1057799586,45cyclictest0-21swapper/223:08:332
1057799584,46cyclictest0-21swapper/223:26:482
74102573,12sleep30-21swapper/323:13:543
219499570,4rtkit-daemon2193-21rtkit-daemon21:17:233
1057899574,45cyclictest0-21swapper/323:46:523
1057899574,45cyclictest0-21swapper/323:16:483
1057799579,42cyclictest0-21swapper/221:57:462
1057799579,15cyclictest0-21swapper/221:51:502
1057799577,44cyclictest0-21swapper/221:31:342
1057799577,42cyclictest0-21swapper/223:16:372
1057799575,45cyclictest0-21swapper/220:11:462
10577995717,33cyclictest1227-21runrttasks19:17:012
10577995711,38cyclictest24870-21crond19:16:292
1057699574,9cyclictest21273-21cstates21:11:391
219499560,4rtkit-daemon2193-21rtkit-daemon21:09:383
1057899565,44cyclictest26279-21df_inode22:06:393
10578995638,9cyclictest13339-21latency21:46:483
10578995638,9cyclictest13339-21latency21:46:483
1057799568,40cyclictest0-21swapper/221:41:192
1057799567,42cyclictest0-21swapper/219:56:512
1057799567,41cyclictest14681-21ssh21:49:042
1057799567,41cyclictest14681-21ssh21:49:042
1057799565,44cyclictest0-21swapper/222:41:342
10577995612,37cyclictest0-21swapper/223:41:362
10577995612,37cyclictest0-21swapper/223:41:362
10577995610,39cyclictest23982-21aten_r1power_po20:21:392
10577995610,39cyclictest23982-21aten_r1power_po20:21:392
10578995540,10cyclictest0-21swapper/322:50:583
10578995540,10cyclictest0-21swapper/320:56:433
1057899554,43cyclictest0-21swapper/321:36:443
10578995538,11cyclictest0-21swapper/322:40:443
10578995538,10cyclictest5129-21cpuspeed_turbos19:41:423
10578995537,11cyclictest0-21swapper/321:11:543
10578995526,23cyclictest20302-21sh21:56:503
10578995526,13cyclictest0-21swapper/321:26:393
10578995524,10cyclictest30808-21idleruntime-cro20:36:263
1057799555,42cyclictest128652chrt00:10:572
1057799555,42cyclictest0-21swapper/219:55:272
10577995519,11cyclictest1227-21runrttasks20:31:512
1057699554,13cyclictest0-21swapper/120:33:061
10576995533,14cyclictest14377-21chrt18:51:551
1057699553,35cyclictest18385-21http_loadtime21:06:451
1057699553,12cyclictest0-21swapper/120:36:491
10576995516,22cyclictest0-21swapper/121:01:421
10576995516,22cyclictest0-21swapper/121:01:421
10576995513,22cyclictest0-21swapper/120:16:381
66512543,43sleep10-21swapper/119:42:551
1057899545,41cyclictest0-21swapper/300:01:403
1057899544,30cyclictest0-21swapper/319:01:563
10578995439,10cyclictest0-21swapper/321:04:093
10578995439,10cyclictest0-21swapper/321:04:093
10578995439,10cyclictest0-21swapper/300:07:023
1057899543,44cyclictest0-21swapper/321:23:573
1057799547,40cyclictest0-21swapper/219:06:402
1057799544,42cyclictest0-21swapper/222:26:362
1057799544,42cyclictest0-21swapper/222:26:362
10577995411,36cyclictest0-21swapper/220:26:552
219499530,7rtkit-daemon0-21swapper/321:18:011
192142533,42sleep10-21swapper/119:01:551
1057899534,42cyclictest0-21swapper/323:01:353
10578995338,10cyclictest0-21swapper/321:31:403
10578995338,10cyclictest0-21swapper/320:50:203
10578995324,9cyclictest19119-21ssh23:31:363
1057699535,29cyclictest0-21swapper/119:56:551
10576995335,11cyclictest1049-21needreboot19:31:531
10578995238,10cyclictest0-21swapper/323:11:103
10578995238,10cyclictest0-21swapper/323:11:103
10578995237,11cyclictest0-21swapper/321:52:153
10578995234,11cyclictest10793-21munin-node18:46:513
1057799526,39cyclictest0-21swapper/219:36:292
1057799524,41cyclictest0-21swapper/219:01:302
1057799524,41cyclictest0-21swapper/219:01:302
10577995235,10cyclictest3581-21tr19:36:562
1057699525,14cyclictest0-21swapper/120:56:401
10576995221,13cyclictest0-21swapper/119:47:031
10576995221,13cyclictest0-21swapper/119:16:451
10576995221,13cyclictest0-21swapper/119:11:461
10576995220,14cyclictest0-21swapper/120:01:391
1057899514,28cyclictest0-21swapper/320:16:493
10578995138,7cyclictest30571-21ssh22:11:543
10578995135,11cyclictest0-21swapper/322:51:223
10578995130,14cyclictest0-21swapper/319:51:503
1057899513,41cyclictest0-21swapper/322:02:173
10578995129,14cyclictest0-21swapper/322:16:453
10578995124,12cyclictest0-21swapper/323:57:113
10577995134,11cyclictest0-21swapper/220:06:452
10577995118,27cyclictest1227-21runrttasks19:03:012
10577995113,29cyclictest31633-21cut20:36:442
10577995113,11cyclictest11389-21chrt18:46:482
1057699515,28cyclictest0-21swapper/120:26:481
1057699514,29cyclictest0-21swapper/120:49:411
1057699514,29cyclictest0-21swapper/119:22:011
1057699514,28cyclictest0-21swapper/119:06:571
1057699514,28cyclictest0-21swapper/118:46:531
10576995120,13cyclictest0-21swapper/120:41:491
166882503,39sleep316756-21munin-node18:56:543
166882503,39sleep316756-21munin-node18:56:543
1057899504,40cyclictest0-21swapper/323:51:423
1057899504,39cyclictest19220-21head20:11:383
1057899504,28cyclictest0-21swapper/320:26:553
10578995033,10cyclictest1064-21aten_r1power_en20:41:393
10578995030,13cyclictest0-21swapper/322:31:483
10578995030,11cyclictest31059-21tail20:36:373
10578995010,33cyclictest5186-21timerwakeupswit22:21:553
1057799508,35cyclictest0-21swapper/219:21:472
1057799504,39cyclictest0-21swapper/219:41:562
1057699504,29cyclictest0-21swapper/120:11:481
1057699504,28cyclictest0-21swapper/120:11:271
1057899494,37cyclictest8222-21ntp_states22:26:493
1057899494,37cyclictest8222-21ntp_states22:26:493
1057899494,28cyclictest0-21swapper/319:11:493
1057899494,27cyclictest0-21swapper/318:51:493
1057899493,39cyclictest28024-21grep22:56:403
10578994929,11cyclictest17073-21cut20:06:413
10578994928,14cyclictest0-21swapper/319:22:023
1057699493,33cyclictest0-21swapper/118:57:551
1057699493,33cyclictest0-21swapper/118:57:551
115782483,40sleep10-21swapper/119:54:521
1057799489,31cyclictest9313-21latency_hist19:51:292
1057799485,36cyclictest0-21swapper/219:26:472
91222472,9sleep30-21swapper/319:49:023
10578994730,12cyclictest0-21swapper/319:16:413
1057699474,26cyclictest0-21swapper/119:26:511
1057899464,34cyclictest0-21swapper/320:01:563
10578994632,8cyclictest8822sleep319:31:523
10578994629,11cyclictest22102-21unixbench_singl19:07:033
1057899454,35cyclictest0-21swapper/320:21:563
1057899454,35cyclictest0-21swapper/320:21:563
1057899453,37cyclictest0-21swapper/319:39:313
138692442,10sleep30-21swapper/319:58:373
1057899444,33cyclictest0-21swapper/318:46:303
10577994314,21cyclictest0-21swapper/218:46:302
103112434,33sleep10-21swapper/118:43:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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