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2026-07-22 - 09:28

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 792 highest latencies:
System rack1slot6s.osadl.org (updated Wed Jul 22, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256489910135,58cyclictest0-21swapper/021:00:210
2564899995,13cyclictest27473-21yum-updatesd-he22:59:370
2564899974,26cyclictest0-21swapper/020:49:340
2564899965,82cyclictest0-21swapper/022:24:250
2564899959,25cyclictest0-21swapper/020:39:220
2564899955,27cyclictest0-21swapper/021:34:250
2564899954,34cyclictest23600-21kworker/0:222:09:060
2564899946,26cyclictest0-21swapper/021:59:180
2564899946,26cyclictest0-21swapper/021:59:180
2564899934,37cyclictest0-21swapper/023:44:310
2564899934,14cyclictest0-21swapper/022:16:170
2564899924,34cyclictest0-21swapper/021:49:290
2564899923,25cyclictest4053-21ssh20:44:310
2564899923,25cyclictest0-21swapper/022:19:360
2564899915,13cyclictest0-21swapper/021:14:400
2564899915,13cyclictest0-21swapper/021:14:400
2564899914,29cyclictest0-21swapper/023:09:270
2564899914,28cyclictest0-21swapper/018:44:430
2564899914,27cyclictest0-21swapper/023:06:470
2564899914,13cyclictest0-21swapper/020:54:310
2564899913,43cyclictest16596-21chrt22:41:400
2564899913,36cyclictest0-21swapper/023:34:020
25648999117,9cyclictest3450-21ssh21:34:070
2564899904,29cyclictest0-21swapper/021:04:440
2564899904,26cyclictest0-21swapper/023:28:330
2564899904,26cyclictest0-21swapper/023:28:330
2564899904,12cyclictest1227-21runrttasks20:31:010
25648999035,11cyclictest8790-21grep21:39:420
2564899903,32cyclictest0-21swapper/022:29:390
110992900,4sleep111100-21processes20:54:381
2564899895,34cyclictest0-21swapper/022:56:160
2564899894,26cyclictest0-21swapper/023:35:390
2564899894,26cyclictest0-21swapper/022:36:240
25648998918,12cyclictest0-21swapper/021:24:350
2564899885,24cyclictest0-21swapper/021:23:540
2564899885,23cyclictest4562-21fschecks_count23:14:210
2564899884,34cyclictest0-21swapper/020:34:400
2564899884,34cyclictest0-21swapper/020:34:400
2564899884,25cyclictest0-21swapper/021:48:170
2564899884,24cyclictest0-21swapper/021:54:310
2564899884,23cyclictest27818-21iostat22:09:290
2564899882,14cyclictest0-21swapper/023:39:250
2564899875,26cyclictest0-21swapper/021:13:130
2564899874,26cyclictest0-21swapper/020:04:250
2564899865,12cyclictest0-21swapper/019:59:260
2564899864,26cyclictest0-21swapper/020:23:590
25648998618,12cyclictest0-21swapper/020:27:310
2564899857,20cyclictest0-21swapper/019:29:130
2564899854,33cyclictest0-21swapper/019:49:400
2564899853,25cyclictest0-21swapper/022:44:100
2564899853,25cyclictest0-21swapper/022:44:100
2564899844,26cyclictest0-21swapper/023:22:400
2564899824,33cyclictest0-21swapper/018:27:310
2564899824,33cyclictest0-21swapper/018:27:310
2564899815,26cyclictest0-21swapper/019:26:110
2564899804,26cyclictest0-21swapper/022:49:140
2564899794,33cyclictest0-21swapper/018:34:440
2564899773,39cyclictest0-21swapper/019:38:510
299812740,5sleep229987-21entropy19:34:302
219499680,4rtkit-daemon2193-21rtkit-daemon21:54:223
25649996212,42cyclictest5703-21unixbench_multi23:14:371
25649996119,24cyclictest0-21swapper/121:59:361
25649996119,24cyclictest0-21swapper/121:59:361
25651996026,9cyclictest14171-21yum-updatesd-he20:59:413
25651996023,23cyclictest0-21swapper/321:16:123
25651996023,23cyclictest0-21swapper/321:16:123
25651996017,27cyclictest29169-21ssh22:11:413
2565099604,11cyclictest0-21swapper/221:59:402
2565099604,11cyclictest0-21swapper/221:59:402
2565099603,49cyclictest0-21swapper/221:34:222
64762593,48sleep20-21swapper/223:17:192
33072592,49sleep30-21swapper/321:33:353
2564999594,36cyclictest12681-21munin-node18:59:421
301152584,11sleep20-21swapper/220:34:412
301152584,11sleep20-21swapper/220:34:412
2565199584,36cyclictest0-21swapper/323:18:293
2565199584,36cyclictest0-21swapper/320:57:473
25651995825,14cyclictest25228-21unixbench_multi22:04:413
25650995841,10cyclictest27141-21grep22:09:212
2565099583,48cyclictest0-21swapper/222:34:282
2564999587,44cyclictest0-21swapper/121:09:361
219499580,6rtkit-daemon2193-21rtkit-daemon20:04:273
143852584,46sleep20-21swapper/223:29:202
87382574,12sleep20-21swapper/219:58:092
2565199574,35cyclictest0-21swapper/322:31:543
2565199573,34cyclictest0-21swapper/322:51:493
25651995718,24cyclictest14858-21kernelversion23:29:253
2564999574,23cyclictest29788-21tr21:24:211
25649995715,21cyclictest6088-21unixbench-2d22:24:411
25649995711,27cyclictest16930-21fschecks_count21:04:261
219499570,5rtkit-daemon2193-21rtkit-daemon19:04:513
198432574,12sleep20-21swapper/223:38:072
165002573,12sleep20-21swapper/222:41:192
315222563,10sleep30-21swapper/320:38:163
315222563,10sleep30-21swapper/320:38:163
2565199566,31cyclictest0-21swapper/323:02:133
2565199564,34cyclictest0-21swapper/322:54:223
25651995619,13cyclictest0-21swapper/321:49:353
25651995614,24cyclictest10299-21munin-node21:44:403
25650995638,11cyclictest10670-21cpuspeed_turbos21:44:222
2565099563,46cyclictest0-21swapper/220:39:372
2564999568,41cyclictest0-21swapper/123:36:041
25649995636,13cyclictest0-21swapper/123:19:161
25649995632,18cyclictest1227-21runrttasks20:39:181
25649995610,40cyclictest17633-21aten_r1power_vo22:44:171
25649995610,40cyclictest17633-21aten_r1power_vo22:44:171
258792558,9sleep325961-21telnet18:19:263
2565199554,30cyclictest0-21swapper/321:59:193
2565199554,30cyclictest0-21swapper/321:59:193
2565199554,29cyclictest0-21swapper/319:24:133
25651995523,13cyclictest0-21swapper/322:19:333
25651995520,10cyclictest8445-21runrttasks20:50:303
25651995519,13cyclictest0-21swapper/323:40:443
2565099558,31cyclictest0-21swapper/221:27:202
2564999558,41cyclictest0-21swapper/123:44:151
2564999555,43cyclictest10251-21chrt21:44:081
2564999555,31cyclictest0-21swapper/121:35:241
2564999553,45cyclictest16259-21ssh21:52:471
255202553,10sleep20-21swapper/222:57:072
219499550,5rtkit-daemon2193-21rtkit-daemon23:09:343
219499550,5rtkit-daemon2193-21rtkit-daemon21:19:393
118282553,12sleep20-21swapper/218:54:482
288772544,43sleep20-21swapper/223:02:192
2565199549,25cyclictest0-21swapper/321:37:433
2565199548,30cyclictest0-21swapper/322:15:223
2565199545,30cyclictest0-21swapper/318:29:323
2565199545,29cyclictest0-21swapper/319:59:383
2565199545,29cyclictest0-21swapper/318:39:263
2565199545,28cyclictest0-21swapper/322:24:223
2565199545,26cyclictest0-21swapper/318:51:053
2565199544,27cyclictest0-21swapper/320:30:043
25651995436,12cyclictest32668-21gltestperf19:39:313
2565199543,27cyclictest0-21swapper/320:24:413
25651995420,14cyclictest0-21swapper/320:14:243
25651995420,13cyclictest0-21swapper/321:07:523
25651995420,13cyclictest0-21swapper/320:48:593
25651995419,14cyclictest0-21swapper/319:44:233
25651995418,13cyclictest0-21swapper/318:44:403
25651995418,12cyclictest0-21swapper/321:24:563
25651995417,13cyclictest0-21swapper/319:29:313
2565099544,13cyclictest0-21swapper/222:19:242
2565099543,15cyclictest0-21swapper/221:13:262
2564999549,38cyclictest3289-21cpu20:44:231
2564999549,29cyclictest0-21swapper/123:11:111
2564999548,26cyclictest23617-21unixbench-2d20:24:421
2564999547,39cyclictest11216-21turbostat20:04:101
2564999545,43cyclictest0-21swapper/120:59:351
2564999545,42cyclictest0-21swapper/121:55:281
2564999544,40cyclictest0-21swapper/122:14:061
2564999544,34cyclictest26078-21sensors_temp19:24:431
2564999544,24cyclictest23434-21df_inode21:14:271
2564999544,24cyclictest23434-21df_inode21:14:271
25649995423,24cyclictest0-21swapper/122:04:221
25649995416,21cyclictest1227-21runrttasks20:53:411
25649995411,21cyclictest0-21swapper/123:32:421
25649995410,36cyclictest29133-21cstates20:34:251
25649995410,36cyclictest29133-21cstates20:34:251
219499540,5rtkit-daemon2193-21rtkit-daemon20:39:333
156962542,9sleep30-21swapper/320:10:193
94542532,9sleep20-21swapper/223:21:062
2565199539,26cyclictest0-21swapper/321:11:353
2565199535,29cyclictest0-21swapper/322:44:223
2565199535,29cyclictest0-21swapper/322:44:223
2565199535,29cyclictest0-21swapper/322:39:193
2565199535,29cyclictest0-21swapper/318:34:293
2565199535,26cyclictest0-21swapper/323:26:113
2565199535,26cyclictest0-21swapper/323:26:113
2565199534,29cyclictest0-21swapper/323:04:043
2565199534,27cyclictest0-21swapper/322:35:363
2565199534,26cyclictest0-21swapper/323:20:583
2565199534,26cyclictest0-21swapper/321:39:083
25651995334,11cyclictest20222-21cpuspeed_turbos19:14:263
2565199533,27cyclictest0-21swapper/319:39:113
25651995320,11cyclictest18371-21sshd23:34:303
25651995319,13cyclictest0-21swapper/318:24:293
25651995319,13cyclictest0-21swapper/318:24:293
2565099533,44cyclictest0-21swapper/221:54:242
25650995326,21cyclictest0-21swapper/221:19:062
25650995326,21cyclictest0-21swapper/221:19:062
25650995314,25cyclictest107550irq/46-eth020:29:322
2564999539,23cyclictest0-21swapper/122:57:521
2564999536,24cyclictest0-21swapper/122:18:491
2564999535,40cyclictest0-21swapper/120:14:101
2564999534,41cyclictest1227-21runrttasks22:53:301
25649995336,10cyclictest12043-21unixbench_singl18:54:491
2564999532,44cyclictest0-21swapper/122:29:301
25649995310,36cyclictest0-21swapper/122:34:271
130172532,42sleep00-21swapper/018:59:260
2565199524,28cyclictest0-21swapper/318:59:323
2565199524,26cyclictest0-21swapper/323:46:143
2565199524,25cyclictest0-21swapper/319:50:173
2565199524,25cyclictest0-21swapper/318:58:183
2565099523,42cyclictest0-21swapper/219:59:532
25650995223,23cyclictest0-21swapper/218:29:332
2564999529,26cyclictest18171-21cut19:09:301
2564999529,26cyclictest18171-21cut19:09:301
2564999528,37cyclictest0-21swapper/121:40:241
2564999527,30cyclictest0-21swapper/120:29:301
2564999527,29cyclictest0-21swapper/121:21:271
2564999525,30cyclictest0-21swapper/121:32:441
2564999524,33cyclictest0-21swapper/123:27:161
2564999524,33cyclictest0-21swapper/123:27:161
25649995234,11cyclictest27622-21cut19:29:291
25649995221,23cyclictest1236-21cpuspeed_turbos22:19:201
252762524,6sleep00-21swapper/018:14:530
219499520,5rtkit-daemon2193-21rtkit-daemon20:19:413
118742524,41sleep20-21swapper/220:56:052
2565199514,27cyclictest0-21swapper/319:09:303
2565199514,27cyclictest0-21swapper/319:09:303
2565099518,36cyclictest0-21swapper/223:09:312
2565099514,40cyclictest0-21swapper/221:29:242
2565099514,39cyclictest0-21swapper/220:24:302
2565099514,29cyclictest0-21swapper/222:44:282
2565099514,29cyclictest0-21swapper/222:44:282
25650995136,9cyclictest10868-21cpuspeed_turbos23:24:172
25650995136,9cyclictest10868-21cpuspeed_turbos23:24:172
25650995130,14cyclictest24377-21gltestperf22:04:272
2565099513,42cyclictest0-21swapper/222:29:372
2564999514,29cyclictest0-21swapper/119:39:341
2564999514,27cyclictest7244-21df_inode19:54:271
2564999513,41cyclictest21654-21date20:24:091
25649995112,22cyclictest0-21swapper/123:39:281
25649995111,25cyclictest0-21swapper/122:42:361
25649995110,26cyclictest0-21swapper/119:46:141
2564899516,28cyclictest0-21swapper/018:29:300
25650995036,8cyclictest2736-21grep19:44:292
25650995033,10cyclictest26622-21cut18:19:332
2565099503,29cyclictest0-21swapper/219:19:292
2564999505,37cyclictest0-21swapper/118:49:121
2564999503,39cyclictest31706-21ssh23:05:321
25649995010,33cyclictest27749-21processes22:59:331
38092492,40sleep00-21swapper/019:46:090
284492493,9sleep20-21swapper/221:21:252
2565099494,39cyclictest0-21swapper/220:59:412
2565099494,38cyclictest0-21swapper/220:44:332
2565099494,37cyclictest0-21swapper/220:24:102
2565099494,27cyclictest0-21swapper/222:14:322
25650994933,10cyclictest27361-21cpuspeed_turbos19:29:262
25650994931,12cyclictest0-21swapper/222:51:442
2565099493,40cyclictest0-21swapper/223:49:012
2565099493,39cyclictest0-21swapper/223:39:202
2565099492,41cyclictest0-21swapper/221:44:072
2564999499,33cyclictest18399-21awk20:19:091
2564999494,27cyclictest0-21swapper/118:49:351
2564999493,29cyclictest0-21swapper/118:34:461
25649994924,20cyclictest0-21swapper/119:04:271
25648994933,10cyclictest15395-21cpuspeed_turbos19:04:270
25648994919,13cyclictest0-21swapper/018:54:350
219499490,5rtkit-daemon2193-21rtkit-daemon19:58:273
213002494,39sleep221314-21swap19:14:432
2565099484,25cyclictest0-21swapper/220:49:322
2565099483,27cyclictest0-21swapper/220:09:272
2564999485,24cyclictest29407-21munin-node19:34:351
2564899485,26cyclictest0-21swapper/019:19:390
2564899484,28cyclictest0-21swapper/019:09:280
2564899484,28cyclictest0-21swapper/019:09:280
2564899484,27cyclictest0-21swapper/018:49:350
2564899484,27cyclictest0-21swapper/018:39:320
58232472,38sleep20-21swapper/219:49:462
302492472,9sleep20-21swapper/218:27:152
302492472,9sleep20-21swapper/218:27:152
25651994717,13cyclictest0-21swapper/319:24:383
2565099473,39cyclictest0-21swapper/223:04:282
2565099473,39cyclictest0-21swapper/218:34:462
2565099473,38cyclictest0-21swapper/222:28:352
2565099473,26cyclictest0-21swapper/218:49:262
2565099473,25cyclictest0-21swapper/221:49:142
2564999477,34cyclictest0-21swapper/118:42:141
2564999473,36cyclictest25796-21latency_hist18:19:151
2564899474,26cyclictest0-21swapper/019:54:300
2564899474,26cyclictest0-21swapper/018:19:500
194252473,9sleep20-21swapper/219:11:412
194252473,9sleep20-21swapper/219:11:412
135102472,37sleep20-21swapper/220:08:082
2565099463,35cyclictest0-21swapper/220:14:262
2565099463,34cyclictest0-21swapper/219:04:262
25650994626,13cyclictest0-21swapper/221:04:252
2564999466,34cyclictest0-21swapper/119:53:481
2564999464,34cyclictest0-21swapper/118:29:151
2564999464,34cyclictest0-21swapper/118:29:151
25649994630,10cyclictest26554-21cut18:19:321
2564999462,31cyclictest0-21swapper/119:14:241
2564899465,34cyclictest0-21swapper/019:14:260
14292462,9sleep20-21swapper/219:42:572
2565099454,25cyclictest0-21swapper/218:44:262
2565099453,35cyclictest13951-21yum-updatesd-he18:59:392
2564999454,25cyclictest0-21swapper/118:29:261
2564999452,36cyclictest0-21swapper/120:09:051
2564899455,25cyclictest0-21swapper/020:09:220
25648994512,26cyclictest0-21swapper/019:39:360
49502442,9sleep20-21swapper/218:39:532
2564899444,34cyclictest0-21swapper/020:14:310
2565199434,13cyclictest0-21swapper/318:19:143
2564999435,31cyclictest0-21swapper/119:19:381
2565099413,32cyclictest0-21swapper/219:24:292
254452414,29sleep20-21swapper/218:17:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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