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2026-08-07 - 05:48

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 Fri Aug 07, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2194991070,8rtkit-daemon0-21swapper/023:04:120
26228991034,27cyclictest16099-21unixbench_multi19:54:413
219499990,6rtkit-daemon12650-21ssh23:09:190
2622899979,72cyclictest0-21swapper/320:34:203
2622699974,22cyclictest0-21swapper/120:34:291
2622899964,81cyclictest22809-21gltestperf23:24:203
2622899964,81cyclictest22809-21gltestperf23:24:203
2622899954,28cyclictest0-21swapper/322:49:203
2622899954,24cyclictest2129-21missed_timers21:14:303
219499950,5rtkit-daemon0-21swapper/023:03:040
2622899944,82cyclictest0-21swapper/322:29:083
26228999419,12cyclictest0-21swapper/321:09:243
26228999418,67cyclictest21598-21cpuspeed_turbos22:34:163
2622699943,23cyclictest0-21swapper/121:46:411
2622899935,28cyclictest0-21swapper/321:54:263
2622899934,81cyclictest0-21swapper/319:24:373
2622899925,79cyclictest0-21swapper/322:43:063
2622899925,79cyclictest0-21swapper/322:43:063
2622899924,80cyclictest0-21swapper/322:04:323
2622899924,80cyclictest0-21swapper/320:41:253
2622899924,80cyclictest0-21swapper/320:41:253
2622899924,77cyclictest0-21swapper/321:36:313
26228999231,53cyclictest11303-21df18:39:253
2622699926,67cyclictest0-21swapper/123:29:161
2622699924,21cyclictest0-21swapper/120:19:241
2622899914,78cyclictest0-21swapper/322:44:223
2622899914,78cyclictest0-21swapper/322:44:223
26228999132,51cyclictest32417-21needreboot18:14:383
2622699914,64cyclictest0-21swapper/120:29:561
2622699914,21cyclictest0-21swapper/122:41:361
2622699914,21cyclictest0-21swapper/122:41:361
2622699913,9cyclictest18964-21diskmemload22:11:121
2622899904,78cyclictest3923-21unixbench-2d22:54:363
2622699905,62cyclictest0-21swapper/119:11:151
2622699903,63cyclictest0-21swapper/121:12:341
2622699895,64cyclictest0-21swapper/120:39:281
2622699895,64cyclictest0-21swapper/120:39:281
2622699894,7cyclictest18964-21diskmemload20:28:331
2622699894,67cyclictest0-21swapper/122:34:151
2622699894,61cyclictest0-21swapper/120:48:121
2622699894,23cyclictest0-21swapper/121:33:111
2622899884,76cyclictest0-21swapper/320:14:283
2622899884,73cyclictest0-21swapper/320:12:223
2622899883,12cyclictest0-21swapper/321:50:043
2622699884,67cyclictest0-21swapper/119:49:291
2622699883,77cyclictest12502-21munin-node22:19:251
2622899874,75cyclictest0-21swapper/323:33:203
2622899873,76cyclictest0-21swapper/323:16:203
2622699874,8cyclictest18964-21diskmemload22:29:451
2622699874,76cyclictest0-21swapper/122:57:051
2622699874,67cyclictest0-21swapper/123:24:261
2622699874,67cyclictest0-21swapper/123:24:261
2622699874,65cyclictest0-21swapper/119:44:261
2622699874,22cyclictest0-21swapper/122:18:321
2622699874,22cyclictest0-21swapper/121:18:561
2622699874,21cyclictest0-21swapper/120:59:201
2622899865,26cyclictest0-21swapper/320:45:173
2622899864,65cyclictest0-21swapper/322:14:313
2622899863,31cyclictest0-21swapper/320:09:073
2622899863,31cyclictest0-21swapper/320:09:073
2622699865,63cyclictest0-21swapper/122:24:151
2622699864,75cyclictest0-21swapper/120:14:001
2622699864,64cyclictest0-21swapper/121:39:381
2622699864,59cyclictest0-21swapper/120:07:011
2622699864,59cyclictest0-21swapper/120:07:011
2622899854,73cyclictest0-21swapper/323:04:363
26228998520,13cyclictest0-21swapper/322:59:193
26228998519,57cyclictest25370-21sh21:00:033
26228998518,8cyclictest28381-21ssh21:04:383
26228998513,9cyclictest22968-21ssh21:46:113
2622699856,63cyclictest0-21swapper/123:01:411
2622699855,55cyclictest0-21swapper/119:56:231
2622699854,74cyclictest0-21swapper/121:56:421
2622699854,66cyclictest0-21swapper/123:11:331
2622699854,64cyclictest0-21swapper/121:19:231
2622699854,64cyclictest0-21swapper/121:19:231
2622699854,24cyclictest0-21swapper/121:24:351
2622699854,23cyclictest0-21swapper/121:39:021
2622699854,21cyclictest0-21swapper/122:03:191
2622699854,21cyclictest0-21swapper/122:03:191
26226998514,12cyclictest0-21swapper/120:56:191
2622899844,70cyclictest1227-21runrttasks22:19:233
2622899843,23cyclictest0-21swapper/321:59:163
2622899843,23cyclictest0-21swapper/321:59:163
26228998423,53cyclictest0-21swapper/321:30:553
26228998415,10cyclictest4580-21ssh20:29:263
26228998411,9cyclictest107550irq/46-eth020:51:433
2622699844,7cyclictest107550irq/46-eth022:51:571
2622699844,21cyclictest0-21swapper/121:04:201
2622699843,73cyclictest0-21swapper/120:15:281
2622699843,64cyclictest0-21swapper/123:19:201
26226998421,10cyclictest27618-21aten_r1power_cu19:14:191
2622899835,68cyclictest1227-21runrttasks19:29:383
2622899834,22cyclictest0-21swapper/321:19:333
2622899834,22cyclictest0-21swapper/321:19:333
2622899834,13cyclictest0-21swapper/321:24:243
2622899834,13cyclictest0-21swapper/320:55:593
2622899834,12cyclictest0-21swapper/323:12:543
2622899834,10cyclictest7882-21idleruntime-cro22:14:023
2622699836,21cyclictest0-21swapper/123:05:041
2622699834,72cyclictest0-21swapper/118:34:221
2622699834,71cyclictest0-21swapper/123:14:331
2622699834,56cyclictest0-21swapper/122:05:081
2622699834,20cyclictest0-21swapper/122:47:251
2622699834,20cyclictest0-21swapper/122:47:251
26226998339,37cyclictest23977-21rm21:49:141
2622899824,70cyclictest0-21swapper/319:49:393
2622899824,23cyclictest0-21swapper/323:21:093
2622899824,23cyclictest0-21swapper/321:42:123
26228998222,13cyclictest0-21swapper/320:24:193
26228998222,10cyclictest20585-21aten_r1power_vo18:59:233
2622699828,12cyclictest0-21swapper/120:49:211
2622699827,14cyclictest0-21swapper/118:29:111
26226998224,51cyclictest11675-21gltestperf18:39:291
26226998223,52cyclictest8970-21unixbench_multi19:39:431
26226998223,51cyclictest32433-21needreboot18:14:391
2622699822,73cyclictest13257-21munin-node18:44:391
2622899815,68cyclictest0-21swapper/322:25:293
2622899814,30cyclictest0-21swapper/318:49:113
2622899814,17cyclictest0-21swapper/318:24:443
2622899814,14cyclictest0-21swapper/320:20:163
2622699813,69cyclictest27178-21cut18:04:291
2622699813,22cyclictest15928-21cat18:49:241
26226998124,50cyclictest1227-21runrttasks18:19:471
2622899804,15cyclictest0-21swapper/319:34:413
2622899804,13cyclictest0-21swapper/319:39:273
26228998021,9cyclictest24500-21unixbench-2d19:04:473
26228998014,13cyclictest0-21swapper/318:51:123
2622699804,68cyclictest0-21swapper/118:29:261
2622699804,59cyclictest0-21swapper/118:09:281
26226998025,49cyclictest17407-21fschecks_count19:59:251
26226998025,49cyclictest17407-21fschecks_count19:59:251
26226998024,50cyclictest1227-21runrttasks19:06:381
2622899795,24cyclictest0-21swapper/318:29:243
26228997922,14cyclictest0-21swapper/318:09:263
26228997815,19cyclictest29209-21sed19:14:413
2622699783,23cyclictest0-21swapper/118:57:241
2622699783,21cyclictest5183-21cpuspeed_turbos19:34:201
2622899774,31cyclictest0-21swapper/318:04:263
2622899773,14cyclictest0-21swapper/318:19:233
26227997717,32cyclictest0-21swapper/222:49:132
26228997621,10cyclictest30004-21aten_r1power_cu19:19:183
26228997621,10cyclictest30004-21aten_r1power_cu19:19:183
26228997613,13cyclictest0-21swapper/318:34:333
26228997612,14cyclictest0-21swapper/318:59:093
2622699765,23cyclictest0-21swapper/119:19:231
2622699765,23cyclictest0-21swapper/119:19:231
2622699764,65cyclictest0-21swapper/119:24:401
2622699764,20cyclictest1227-21runrttasks19:30:291
219499760,25rtkit-daemon0-21swapper/122:56:120
2622899754,14cyclictest0-21swapper/319:59:313
2622899754,14cyclictest0-21swapper/319:59:313
26228997327,10cyclictest26057-21gltestperf19:09:283
26228997314,10cyclictest10351-21fschecks_time19:44:243
2622699735,17cyclictest0-21swapper/118:04:121
2622699724,60cyclictest0-21swapper/118:59:331
26227997119,44cyclictest11812-21hwlatdetect21:29:252
26227997017,32cyclictest18964-21diskmemload22:29:282
26227997011,52cyclictest0-21swapper/220:45:132
26227996917,45cyclictest3965-21cpuspeed_turbos20:29:202
2622799689,53cyclictest0-21swapper/222:45:362
2622799689,53cyclictest0-21swapper/222:45:362
26227996816,16cyclictest0-21swapper/222:09:292
26227996716,32cyclictest8414-21ssh20:34:372
26227996521,29cyclictest3022-21munin-node22:04:312
26225996512,45cyclictest0-21swapper/022:13:500
26227996418,24cyclictest16227-21sed23:14:202
26227996410,47cyclictest0-21swapper/221:45:152
2622599644,51cyclictest0-21swapper/021:15:480
26225996424,31cyclictest19754-21latency23:19:250
2622799638,48cyclictest0-21swapper/222:56:312
26227996318,38cyclictest14428-21aten_r1power_cu19:54:192
26227996315,31cyclictest24991-21latency_hist23:28:592
26227996315,31cyclictest24991-21latency_hist23:28:592
26227996315,31cyclictest0-21swapper/219:24:252
26227996312,33cyclictest0-21swapper/221:04:242
26227996311,45cyclictest0-21swapper/220:08:122
26227996311,45cyclictest0-21swapper/220:08:122
2622799628,47cyclictest0-21swapper/221:21:242
2622799628,47cyclictest0-21swapper/221:21:242
2622799623,11cyclictest0-21swapper/221:02:032
26227996216,30cyclictest2219-21ssh21:14:322
26227996215,39cyclictest1547-21nscd21:59:022
26227996215,30cyclictest0-21swapper/223:21:332
26227996214,41cyclictest23276-21gltestperf20:09:252
26227996213,42cyclictest0-21swapper/218:34:222
26227996213,32cyclictest0-21swapper/220:50:092
2622599624,39cyclictest0-21swapper/023:33:240
2622599624,37cyclictest0-21swapper/020:59:440
219499620,4rtkit-daemon2193-21rtkit-daemon22:34:132
2622799619,46cyclictest0-21swapper/221:52:182
2622799616,48cyclictest0-21swapper/222:39:022
2622799616,48cyclictest0-21swapper/222:39:022
26227996119,23cyclictest0-21swapper/220:15:422
26227996116,38cyclictest1001-21ssh20:24:262
26227996113,30cyclictest0-21swapper/222:24:142
26227996110,43cyclictest0-21swapper/220:43:122
26227996110,43cyclictest0-21swapper/220:43:122
26225996140,13cyclictest12381-21wc22:19:230
2622599613,51cyclictest0-21swapper/020:24:260
9292604,49sleep00-21swapper/022:50:490
2622799607,46cyclictest0-21swapper/222:14:292
26227996015,30cyclictest14134-21munin-node21:34:422
26227996015,30cyclictest1227-21runrttasks20:20:132
26227996011,32cyclictest0-21swapper/223:29:052
2622599604,36cyclictest0-21swapper/021:28:130
26225996039,13cyclictest10233-21head18:34:440
2622799596,46cyclictest0-21swapper/223:11:522
2622799596,46cyclictest0-21swapper/221:12:422
26227995913,39cyclictest17550-21hostname21:39:172
26225995917,22cyclictest28575-21fschecks_time22:44:210
26225995917,22cyclictest28575-21fschecks_time22:44:210
161712593,48sleep00-21swapper/022:24:320
127382593,49sleep00-21swapper/020:42:080
127382593,49sleep00-21swapper/020:42:080
26227995811,41cyclictest0-21swapper/222:24:012
2622599584,36cyclictest0-21swapper/020:12:200
2622599584,32cyclictest0-21swapper/019:09:310
2622599583,48cyclictest0-21swapper/019:34:180
325972574,10sleep00-21swapper/021:12:360
2622799578,42cyclictest0-21swapper/221:24:182
26227995711,32cyclictest0-21swapper/221:59:302
26227995711,32cyclictest0-21swapper/221:59:302
26227995710,40cyclictest0-21swapper/223:04:142
26227995710,39cyclictest0-21swapper/218:09:242
26227995710,31cyclictest0-21swapper/222:59:072
2622599577,44cyclictest0-21swapper/022:02:200
2622599577,44cyclictest0-21swapper/022:02:200
2622599575,23cyclictest0-21swapper/019:14:420
2622599574,45cyclictest0-21swapper/021:49:230
26225995737,13cyclictest0-21swapper/021:34:210
219499570,6rtkit-daemon2193-21rtkit-daemon19:14:212
2622799565,34cyclictest0-21swapper/218:14:242
26227995613,37cyclictest0-21swapper/220:54:162
219499560,5rtkit-daemon2193-21rtkit-daemon19:45:192
307332553,44sleep00-21swapper/018:11:040
277652553,12sleep00-21swapper/021:04:300
26227995513,26cyclictest0-21swapper/219:04:252
26227995511,35cyclictest8375-21missed_timers19:39:332
2622599553,33cyclictest23709-21latency_hist21:49:030
224142553,46sleep00-21swapper/019:02:030
219499550,6rtkit-daemon2193-21rtkit-daemon18:39:372
192802553,12sleep00-21swapper/021:39:410
181872553,44sleep00-21swapper/018:54:250
110182553,45sleep00-21swapper/019:44:350
316562543,44sleep00-21swapper/020:21:440
312052543,43sleep00-21swapper/018:14:140
2622799549,39cyclictest0-21swapper/219:34:182
2622799547,40cyclictest0-21swapper/219:19:262
2622799547,40cyclictest0-21swapper/219:19:262
26227995415,33cyclictest4570-21nscd18:29:102
2622599544,43cyclictest0-21swapper/021:29:400
2622599543,34cyclictest0-21swapper/021:55:380
2622599543,32cyclictest21692-21ssh22:34:170
26225995420,28cyclictest0-21swapper/019:19:300
26225995420,28cyclictest0-21swapper/019:19:300
219499540,5rtkit-daemon13322-21runrttasks19:49:342
285732533,10sleep00-21swapper/020:17:570
2622799536,40cyclictest0-21swapper/219:29:342
26227995312,19cyclictest1227-21runrttasks18:59:232
2622599535,41cyclictest0-21swapper/020:30:200
2622599534,30cyclictest0-21swapper/020:44:400
2622599534,30cyclictest0-21swapper/020:34:360
2622599534,12cyclictest4573-21nscd20:04:070
2622599534,12cyclictest4573-21nscd20:04:070
26225995331,14cyclictest0-21swapper/022:04:280
197582534,43sleep00-21swapper/022:29:360
176022533,11sleep00-21swapper/018:51:470
152412532,10sleep00-21swapper/018:47:030
33442523,43sleep00-21swapper/018:22:410
26227995216,12cyclictest1227-21runrttasks18:57:262
26227995215,31cyclictest0-21swapper/218:44:332
2622599525,29cyclictest0-21swapper/019:29:370
2622599524,42cyclictest11161-21sh22:19:020
2622599524,33cyclictest0-21swapper/023:26:460
2622599524,33cyclictest0-21swapper/023:26:460
2622599524,32cyclictest0-21swapper/020:53:070
219499520,4rtkit-daemon2193-21rtkit-daemon18:06:232
152952524,40sleep00-21swapper/023:14:030
2622799517,30cyclictest1084-21lldpd18:33:422
26227995120,25cyclictest25506-21grep19:09:222
26227995120,25cyclictest16078-21df18:49:262
2622599514,41cyclictest0-21swapper/020:54:390
2622599514,25cyclictest27077-21ssh22:41:590
2622599514,25cyclictest27077-21ssh22:41:590
26225995121,14cyclictest0-21swapper/018:04:240
26225995119,12cyclictest0-21swapper/019:04:200
164842513,42sleep00-21swapper/019:57:580
130072514,12sleep00-21swapper/018:44:050
62802503,12sleep00-21swapper/021:20:100
62802503,12sleep00-21swapper/021:20:100
2622599504,27cyclictest0-21swapper/020:04:290
2622599504,27cyclictest0-21swapper/020:04:290
2622599504,27cyclictest0-21swapper/019:39:300
2622799494,27cyclictest0-21swapper/218:19:272
2622599494,28cyclictest0-21swapper/019:49:300
2622599494,27cyclictest0-21swapper/019:24:290
55372483,39sleep00-21swapper/018:25:030
2622599484,26cyclictest0-21swapper/018:29:340
2622799477,34cyclictest0-21swapper/219:59:332
2622799477,34cyclictest0-21swapper/219:59:332
26227994013,11cyclictest26202-21latency_hist18:04:132
2622599393,30cyclictest0-21swapper/018:04:120
2622899364,25cyclictest0-21swapper/318:04:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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