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2026-08-10 - 12:45

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 Mon Aug 10, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29476991025,52cyclictest0-21swapper/121:33:551
29478999939,53cyclictest0-21swapper/221:11:452
2947899984,42cyclictest0-21swapper/219:51:182
29478999836,13cyclictest0-21swapper/220:31:382
29478999750,40cyclictest30848-21tune2fs21:01:342
300652950,5chrt30064-21http_loadtime20:11:383
29479999541,13cyclictest0-21swapper/321:15:013
29478999533,12cyclictest0-21swapper/222:10:052
29479999441,12cyclictest0-21swapper/321:17:403
29479999440,12cyclictest0-21swapper/320:09:223
2947899933,41cyclictest0-21swapper/222:31:282
2947899923,7cyclictest21658-21latency_hist23:16:112
2947399924,71cyclictest1227-21runrttasks22:16:250
2947399923,81cyclictest0-21swapper/022:46:120
29478999132,12cyclictest26601-21grep20:06:392
2947399914,68cyclictest0-21swapper/021:56:330
2947399904,66cyclictest0-21swapper/018:16:560
2947399903,60cyclictest25767-21kworker/0:220:24:130
29479998938,12cyclictest0-21swapper/320:40:133
2947999892,58cyclictest0-21swapper/322:47:353
2947999892,58cyclictest0-21swapper/322:47:353
29478998939,9cyclictest19672-21sshd22:21:462
29478998939,43cyclictest0-21swapper/223:11:052
2947899893,79cyclictest0-21swapper/221:46:442
2947399894,78cyclictest0-21swapper/023:20:260
2947399894,78cyclictest0-21swapper/021:16:300
2947399894,77cyclictest0-21swapper/022:56:520
2947399893,78cyclictest0-21swapper/020:53:330
2947399893,71cyclictest1227-21runrttasks23:09:150
2947399893,68cyclictest16087-21taskset21:26:480
2947399893,61cyclictest0-21swapper/022:11:080
219499890,5rtkit-daemon2193-21rtkit-daemon20:58:390
2947899883,42cyclictest0-21swapper/220:55:242
2947399885,64cyclictest0-21swapper/023:16:110
2947399884,77cyclictest0-21swapper/022:02:280
2947399884,77cyclictest0-21swapper/021:11:330
2947399883,78cyclictest0-21swapper/022:31:070
2947399883,78cyclictest0-21swapper/021:47:550
2947399883,77cyclictest16986-21munin-node20:41:430
2947399883,77cyclictest16986-21munin-node20:41:430
2947399883,76cyclictest0-21swapper/018:06:450
2947399883,63cyclictest0-21swapper/023:30:450
2947399883,48cyclictest1227-21runrttasks21:33:400
29478998734,11cyclictest0-21swapper/222:30:082
29478998733,14cyclictest0-21swapper/220:21:482
2947399877,64cyclictest22617-21aten_r1power_vo20:01:340
2947399874,76cyclictest0-21swapper/022:11:290
2947399874,75cyclictest0-21swapper/021:41:360
2947399873,76cyclictest1569-21ssh21:06:310
2947399873,76cyclictest0-21swapper/023:02:550
2947399873,75cyclictest0-21swapper/023:23:080
2947399873,66cyclictest0-21swapper/022:51:260
2947399873,62cyclictest0-21swapper/022:33:540
219499870,7rtkit-daemon2193-21rtkit-daemon20:50:320
2947899865,41cyclictest0-21swapper/220:36:392
2947899864,41cyclictest0-21swapper/218:01:542
29478998631,13cyclictest0-21swapper/221:23:232
29478998631,13cyclictest0-21swapper/221:23:232
2947399865,74cyclictest0-21swapper/022:40:120
2947399865,65cyclictest11103-21fschecks_count20:31:360
2947399864,75cyclictest0-21swapper/022:26:010
2947399864,75cyclictest0-21swapper/021:36:410
2947399864,75cyclictest0-21swapper/020:26:480
2947399864,75cyclictest0-21swapper/020:20:480
2947399864,74cyclictest0-21swapper/020:06:370
29478998534,44cyclictest0-21swapper/221:56:242
29478998532,14cyclictest0-21swapper/221:56:032
29478998532,10cyclictest25938-21tune2fs23:21:292
2947899853,40cyclictest0-21swapper/221:31:482
2947399854,74cyclictest0-21swapper/021:24:190
2947399854,74cyclictest0-21swapper/021:24:190
2947399853,74cyclictest29929-21fschecks_time20:11:370
2947399853,61cyclictest8840-21fschecks_time19:31:390
2947999843,50cyclictest0-21swapper/323:29:023
2947399844,72cyclictest819-21ssh21:54:390
2947399844,72cyclictest0-21swapper/019:21:410
2947399844,72cyclictest0-21swapper/019:21:410
2947399844,72cyclictest0-21swapper/019:01:420
2947399844,65cyclictest0-21swapper/021:03:180
2947399844,57cyclictest0-21swapper/020:01:180
2947399842,75cyclictest315531sshd18:02:390
29478998332,13cyclictest0-21swapper/222:16:332
2947399834,72cyclictest0-21swapper/019:46:490
2947399834,72cyclictest0-21swapper/018:36:380
2947399834,72cyclictest0-21swapper/018:36:380
2947399833,63cyclictest0-21swapper/022:51:120
2947399833,63cyclictest0-21swapper/022:51:120
2947399824,71cyclictest0-21swapper/019:18:010
2947399824,60cyclictest0-21swapper/020:39:280
2947399823,71cyclictest0-21swapper/019:53:080
2947399823,71cyclictest0-21swapper/019:36:460
2947399823,60cyclictest9351-21munin-node18:26:420
29478998140,36cyclictest0-21swapper/220:30:102
29478998131,12cyclictest0-21swapper/218:06:472
2947899813,41cyclictest0-21swapper/222:48:522
2947899813,41cyclictest0-21swapper/222:48:522
2947399814,70cyclictest0-21swapper/019:42:510
2947399814,70cyclictest0-21swapper/018:56:510
2947399813,71cyclictest30291-21chrt19:07:140
29478998036,11cyclictest0-21swapper/222:15:532
2947399804,69cyclictest0-21swapper/018:31:430
2947399804,69cyclictest0-21swapper/018:11:430
2947399803,69cyclictest18482-21chrt18:44:040
219499800,6rtkit-daemon2193-21rtkit-daemon21:23:011
219499800,6rtkit-daemon2193-21rtkit-daemon21:23:011
2947399793,68cyclictest1124-21snmpd19:31:100
29478997835,11cyclictest0-21swapper/220:58:402
2947399783,68cyclictest0-21swapper/018:21:490
29473997821,38cyclictest0-21swapper/018:46:400
2947399774,59cyclictest0-21swapper/018:51:580
29473997718,41cyclictest0-21swapper/019:11:320
2947899764,41cyclictest0-21swapper/221:16:542
29478997635,10cyclictest0-21swapper/222:36:332
29478997634,9cyclictest19155-21switchtime19:51:502
2947399744,59cyclictest0-21swapper/018:01:230
2947399744,59cyclictest0-21swapper/018:01:230
29478997133,11cyclictest0-21swapper/221:06:392
2947999702,62cyclictest0-21swapper/320:01:333
219499700,5rtkit-daemon2193-21rtkit-daemon21:58:291
219499700,5rtkit-daemon2193-21rtkit-daemon21:06:311
39402665,11sleep10-21swapper/122:46:451
39402665,11sleep10-21swapper/122:46:451
219499660,6rtkit-daemon2193-21rtkit-daemon19:59:561
219499660,5rtkit-daemon2193-21rtkit-daemon20:59:091
219499660,5rtkit-daemon2193-21rtkit-daemon20:13:411
219499650,6rtkit-daemon2193-21rtkit-daemon21:39:071
219499650,6rtkit-daemon2193-21rtkit-daemon21:29:301
219499650,6rtkit-daemon2193-21rtkit-daemon20:51:091
219499650,6rtkit-daemon0-21swapper/222:55:492
219499650,5rtkit-daemon2193-21rtkit-daemon22:57:271
219499650,5rtkit-daemon2193-21rtkit-daemon22:41:351
219499650,5rtkit-daemon2193-21rtkit-daemon20:52:241
219499650,5rtkit-daemon2193-21rtkit-daemon19:22:431
219499650,5rtkit-daemon2193-21rtkit-daemon19:22:431
219499650,5rtkit-daemon2193-21rtkit-daemon18:28:521
219499650,5rtkit-daemon2193-21rtkit-daemon18:07:161
2947699644,51cyclictest0-21swapper/120:03:051
219499640,5rtkit-daemon2193-21rtkit-daemon22:37:501
219499640,5rtkit-daemon2193-21rtkit-daemon20:39:171
219499640,4rtkit-daemon2193-21rtkit-daemon22:15:131
219499640,4rtkit-daemon2193-21rtkit-daemon21:01:461
2947999634,21cyclictest0-21swapper/320:16:403
219499630,5rtkit-daemon2193-21rtkit-daemon22:03:361
219499630,4rtkit-daemon2193-21rtkit-daemon20:29:181
219499630,4rtkit-daemon2193-21rtkit-daemon18:56:141
29478996245,11cyclictest0-21swapper/222:01:442
29476996227,27cyclictest27327-21timerandwakeup20:06:521
219499620,5rtkit-daemon2193-21rtkit-daemon22:29:131
219499620,4rtkit-daemon2193-21rtkit-daemon20:17:181
29478996142,12cyclictest0-21swapper/222:45:262
2947699614,50cyclictest0-21swapper/121:19:581
2947999605,47cyclictest0-21swapper/322:11:483
29479996043,10cyclictest21665-21cut22:26:263
2947999603,52cyclictest0-21swapper/320:45:543
2947999603,52cyclictest0-21swapper/320:45:543
29478996041,12cyclictest0-21swapper/221:41:472
29478996040,13cyclictest0-21swapper/223:26:362
29479995940,13cyclictest0-21swapper/320:51:053
29478995939,13cyclictest0-21swapper/220:42:402
29478995939,13cyclictest0-21swapper/220:42:402
2947699595,47cyclictest0-21swapper/122:07:331
29476995920,12cyclictest1227-21runrttasks23:11:111
29479995841,12cyclictest0-21swapper/323:06:243
2947999583,50cyclictest0-21swapper/320:21:263
2947999582,51cyclictest0-21swapper/323:18:333
2947999582,51cyclictest0-21swapper/322:44:023
2947999582,50cyclictest0-21swapper/322:08:263
2947999582,50cyclictest0-21swapper/322:02:323
2947999582,50cyclictest0-21swapper/321:57:503
2947999582,50cyclictest0-21swapper/321:46:423
2947999582,50cyclictest0-21swapper/321:21:493
2947999582,50cyclictest0-21swapper/321:21:493
2947999582,50cyclictest0-21swapper/320:51:553
2947699585,17cyclictest0-21swapper/123:25:361
2947699584,31cyclictest0-21swapper/119:26:451
2947699584,27cyclictest25573-21python21:41:441
2947699584,12cyclictest0-21swapper/123:06:241
29479995739,13cyclictest0-21swapper/321:28:393
2947999573,48cyclictest0-21swapper/322:40:363
2947999572,49cyclictest0-21swapper/323:03:293
2947999572,49cyclictest0-21swapper/320:30:353
2947699573,48cyclictest0-21swapper/123:16:341
71962562,48sleep10-21swapper/121:15:271
70102563,45sleep30-21swapper/319:26:493
2947999564,45cyclictest0-21swapper/318:46:353
29479995639,12cyclictest0-21swapper/320:58:023
29479995638,12cyclictest26684-21ssh23:21:403
29479995638,11cyclictest10719-21munin-node22:56:533
2947999563,48cyclictest0-21swapper/321:43:123
2947999563,46cyclictest0-21swapper/323:11:383
2947999562,49cyclictest0-21swapper/322:33:593
29478995642,8cyclictest22520-21aten_r1power_en20:01:332
29478995638,12cyclictest0-21swapper/221:38:102
29478995636,13cyclictest0-21swapper/218:41:212
29478995636,13cyclictest0-21swapper/218:41:212
2947899563,46cyclictest770-21fschecks_count20:16:352
2947699565,44cyclictest0-21swapper/121:50:401
2947699565,14cyclictest0-21swapper/118:02:501
2947699564,37cyclictest0-21swapper/123:03:191
2947699563,47cyclictest0-21swapper/119:06:321
2947699563,36cyclictest0-21swapper/122:52:261
29476995616,32cyclictest0-21swapper/122:21:341
2947999554,44cyclictest22547-21ssh21:36:483
2947999554,44cyclictest17901-21wc21:31:283
2947999553,48cyclictest0-21swapper/321:06:383
2947999552,47cyclictest0-21swapper/322:18:023
2947999552,47cyclictest0-21swapper/320:34:533
29478995538,12cyclictest0-21swapper/219:21:202
29478995534,15cyclictest0-21swapper/218:56:222
29478995527,12cyclictest0-21swapper/220:51:172
2947699555,16cyclictest0-21swapper/120:22:071
2947699554,16cyclictest0-21swapper/121:51:591
2947699553,37cyclictest0-21swapper/119:37:041
169852552,46sleep117057-21aten_r1power_fr20:41:281
169852552,46sleep117057-21aten_r1power_fr20:41:281
109292553,44sleep211055-21tail18:26:582
29479995435,13cyclictest0-21swapper/321:51:463
2947999543,45cyclictest0-21swapper/322:51:253
29479995421,26cyclictest30815-21fschecks_time21:01:343
2947899545,42cyclictest0-21swapper/220:13:002
29476995435,12cyclictest3060-21gltestperf18:11:421
29476995422,13cyclictest0-21swapper/123:26:231
123142543,42sleep10-21swapper/118:31:401
29479995338,10cyclictest0-21swapper/319:21:323
29479995338,10cyclictest0-21swapper/319:21:323
29479995335,13cyclictest0-21swapper/318:31:223
29479995325,22cyclictest0-21swapper/318:42:443
29479995317,28cyclictest0-21swapper/318:06:363
29478995339,9cyclictest0-21swapper/221:26:362
29478995334,12cyclictest0-21swapper/223:01:302
29478995332,15cyclictest0-21swapper/223:18:182
29478995328,12cyclictest0-21swapper/218:41:492
2947699534,42cyclictest11742-21ntp_states20:31:461
99692522,10sleep30-21swapper/319:32:333
2947999525,41cyclictest0-21swapper/319:06:323
2947999522,43cyclictest0-21swapper/318:36:373
2947999522,43cyclictest0-21swapper/318:36:373
29478995225,22cyclictest0-21swapper/218:11:282
29478995225,12cyclictest0-21swapper/222:56:352
2947699525,40cyclictest0-21swapper/118:56:491
2947699525,16cyclictest0-21swapper/118:36:381
2947699525,16cyclictest0-21swapper/118:36:381
2947699524,29cyclictest0-21swapper/119:53:081
29476995223,15cyclictest0-21swapper/122:33:451
29476995222,13cyclictest0-21swapper/118:41:481
2947999512,44cyclictest0-21swapper/318:16:343
2947999512,43cyclictest0-21swapper/322:21:293
2947999512,42cyclictest0-21swapper/318:01:343
2947699515,14cyclictest0-21swapper/122:17:291
2947699514,32cyclictest0-21swapper/119:46:431
196152513,10sleep30-21swapper/319:53:373
2947899503,40cyclictest0-21swapper/219:26:322
29478995029,10cyclictest0-21swapper/219:11:472
29478995020,18cyclictest0-21swapper/219:06:442
2947699504,28cyclictest0-21swapper/118:46:521
29476995017,16cyclictest0-21swapper/118:21:441
137252503,9sleep30-21swapper/318:34:213
2947999495,38cyclictest0-21swapper/318:52:583
2947999493,40cyclictest0-21swapper/319:36:313
2947999492,41cyclictest0-21swapper/318:56:383
2947999492,39cyclictest0-21swapper/319:01:453
2947899494,38cyclictest0-21swapper/218:21:452
2947699495,24cyclictest0-21swapper/119:01:431
2947699494,28cyclictest0-21swapper/119:33:041
2947699494,24cyclictest557-21latency_hist19:16:201
2947699494,23cyclictest0-21swapper/118:16:341
220612492,41sleep20-21swapper/219:59:252
149242492,40sleep10-21swapper/119:44:531
2947999483,39cyclictest14102-21grep19:41:433
2947999483,39cyclictest0-21swapper/318:11:343
2947999482,39cyclictest0-21swapper/318:22:533
29478994830,12cyclictest0-21swapper/219:01:442
29478994822,8cyclictest5493-21latency_hist19:26:202
29478994822,8cyclictest5493-21latency_hist19:26:202
219499480,4rtkit-daemon2193-21rtkit-daemon17:56:462
219499480,4rtkit-daemon2193-21rtkit-daemon17:56:462
2947999474,11cyclictest876-21aten_r1power_fr19:16:323
2947999472,41cyclictest0-21swapper/319:46:563
2947899475,34cyclictest1227-21runrttasks19:36:202
29478994721,7cyclictest6724-21latency_hist18:21:222
2947699474,15cyclictest0-21swapper/119:16:481
2947899463,27cyclictest0-21swapper/219:41:362
29479994531,10cyclictest32517-21unixbench-2d19:11:533
2947899454,37cyclictest0-21swapper/219:40:422
29478994527,13cyclictest0-21swapper/218:56:392
2947999447,31cyclictest20477-21expr19:56:323
2947899446,32cyclictest0-21swapper/218:31:472
29478994425,13cyclictest0-21swapper/218:46:412
29476994217,10cyclictest0-21swapper/118:01:231
29476994217,10cyclictest0-21swapper/118:01:231
2947999384,11cyclictest0-21swapper/318:01:243
2947999384,11cyclictest0-21swapper/318:01:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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