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2026-04-03 - 06:13

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 all highest latencies:
System rack1slot6s.osadl.org (updated Fri Apr 03, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37989910939,9cyclictest1419-21runrttasks19:27:563
3797991094,98cyclictest0-21swapper/220:36:092
37979910840,12cyclictest0-21swapper/220:17:012
37979910840,12cyclictest0-21swapper/220:17:012
37979910637,12cyclictest0-21swapper/219:28:072
3797991054,93cyclictest0-21swapper/221:21:142
3797991045,91cyclictest0-21swapper/221:46:082
3797991043,48cyclictest0-21swapper/219:41:222
37949910437,12cyclictest0-21swapper/022:10:580
3797991034,53cyclictest0-21swapper/221:41:092
37989910236,12cyclictest0-21swapper/319:41:133
3797991025,89cyclictest0-21swapper/221:56:142
37979910243,8cyclictest3737-21rm19:36:032
37979910243,8cyclictest3737-21rm19:36:032
3797991024,48cyclictest0-21swapper/221:51:032
37989910137,12cyclictest0-21swapper/322:22:063
37989910137,12cyclictest0-21swapper/322:22:063
3797991015,88cyclictest0-21swapper/220:26:082
3797991014,89cyclictest0-21swapper/219:56:182
3797991013,50cyclictest4012-21munin-node17:26:172
37979910039,12cyclictest0-21swapper/220:14:222
37979910035,11cyclictest0-21swapper/220:42:292
37949910038,8cyclictest18429-21ssh21:31:200
37949910033,14cyclictest0-21swapper/022:04:050
379899993,52cyclictest4595-21hwlatdetect19:36:113
379899993,52cyclictest4595-21hwlatdetect19:36:113
3794999936,12cyclictest0-21swapper/020:23:000
3794999933,13cyclictest0-21swapper/022:17:040
3794999933,13cyclictest0-21swapper/019:29:530
3794999932,13cyclictest0-21swapper/021:15:590
3798999831,12cyclictest0-21swapper/320:55:073
379899983,49cyclictest0-21swapper/321:25:583
3797999840,7cyclictest26249-21ssh22:31:162
3797999835,11cyclictest0-21swapper/222:11:152
3794999834,13cyclictest0-21swapper/021:01:160
379899972,48cyclictest16121-21runrttasks19:52:433
3797999740,12cyclictest0-21swapper/219:53:192
379799974,51cyclictest0-21swapper/222:23:312
379799974,51cyclictest0-21swapper/222:23:312
3797999737,11cyclictest0-21swapper/220:32:472
3797999736,11cyclictest0-21swapper/221:40:462
3797999736,11cyclictest0-21swapper/221:40:462
379799973,49cyclictest0-21swapper/220:05:522
379799973,48cyclictest28815-21diskmemload20:56:182
3794999732,13cyclictest0-21swapper/019:34:180
379899964,44cyclictest0-21swapper/322:15:463
379799964,44cyclictest1419-21runrttasks21:10:002
3797999639,12cyclictest0-21swapper/219:46:072
3797999636,12cyclictest0-21swapper/222:51:092
379899954,45cyclictest0-21swapper/322:48:213
379899954,44cyclictest0-21swapper/320:18:203
379899954,44cyclictest0-21swapper/320:18:203
379899953,85cyclictest0-21swapper/322:35:453
379899953,49cyclictest0-21swapper/322:35:553
3798999511,37cyclictest0-21swapper/319:46:253
3797999535,12cyclictest0-21swapper/222:40:242
379499954,51cyclictest0-21swapper/019:06:120
379499953,55cyclictest0-21swapper/021:00:240
3798999436,9cyclictest1521-21python19:31:233
3798999434,12cyclictest0-21swapper/321:12:583
379799944,82cyclictest0-21swapper/222:16:022
379799944,51cyclictest0-21swapper/220:46:102
379799944,48cyclictest0-21swapper/220:55:402
3797999437,12cyclictest0-21swapper/217:31:262
3797999437,12cyclictest0-21swapper/217:31:262
379499944,55cyclictest0-21swapper/021:56:170
379899934,47cyclictest0-21swapper/322:00:313
379899933,52cyclictest0-21swapper/321:53:453
3797999336,11cyclictest0-21swapper/222:10:452
379799933,47cyclictest16620-21munin-node21:31:042
3794999330,13cyclictest0-21swapper/019:45:510
379899923,46cyclictest24397-21rm21:41:093
3798999229,12cyclictest0-21swapper/320:35:563
379799924,45cyclictest0-21swapper/222:03:382
3797999235,11cyclictest0-21swapper/220:23:522
379799923,50cyclictest343-21ssh19:31:072
379799923,47cyclictest0-21swapper/222:41:402
379499923,51cyclictest0-21swapper/021:37:430
379499923,51cyclictest0-21swapper/021:37:430
379899915,45cyclictest0-21swapper/320:06:503
3798999123,11cyclictest2901-21latency20:21:123
3797999136,11cyclictest0-21swapper/221:11:042
3798999039,11cyclictest0-21swapper/321:32:133
379899902,48cyclictest0-21swapper/320:41:113
379799904,48cyclictest8555-21ssh21:16:522
379499903,50cyclictest0-21swapper/018:16:220
379499903,50cyclictest0-21swapper/018:16:220
379499903,48cyclictest0-21swapper/022:36:080
379899894,48cyclictest8395-21runrttasks22:53:523
3798998934,8cyclictest7942-21ssh20:29:383
3798998934,11cyclictest0-21swapper/321:10:183
379899893,79cyclictest22457-21rm20:01:233
379899893,43cyclictest0-21swapper/318:21:213
379799893,51cyclictest22324-21rm20:01:222
3798998832,11cyclictest0-21swapper/320:47:593
379899883,44cyclictest0-21swapper/320:32:253
379799885,45cyclictest0-21swapper/222:26:062
379799884,46cyclictest28815-21diskmemload21:26:562
3797998836,11cyclictest0-21swapper/218:11:212
3797998836,11cyclictest0-21swapper/218:11:212
3798998734,10cyclictest0-21swapper/321:50:403
3798998733,10cyclictest0-21swapper/322:11:453
379899873,44cyclictest0-21swapper/321:03:313
379899872,47cyclictest0-21swapper/321:16:173
3798998636,8cyclictest10377-21ssh22:08:423
3798998630,10cyclictest0-21swapper/321:22:473
379899862,49cyclictest0-21swapper/317:46:063
3797998636,10cyclictest0-21swapper/221:02:422
3798998530,12cyclictest0-21swapper/320:13:413
379799837,43cyclictest4374-21sshd22:46:252
379899822,43cyclictest0-21swapper/317:32:353
379899822,43cyclictest0-21swapper/317:32:353
3798998133,9cyclictest0-21swapper/319:07:163
3798998132,10cyclictest0-21swapper/318:01:243
379899812,47cyclictest0-21swapper/319:02:543
379899812,47cyclictest0-21swapper/318:46:093
3798998036,9cyclictest0-21swapper/319:11:113
3798998030,8cyclictest22817-21ssh21:39:523
3798998030,8cyclictest22817-21ssh21:39:523
3798997630,10cyclictest0-21swapper/320:56:003
3794996940,13cyclictest0-21swapper/020:11:110
379499673,58cyclictest0-21swapper/021:26:060
379899664,55cyclictest20000-21ssh19:59:373
379699664,56cyclictest0-21swapper/121:51:181
3797996540,11cyclictest0-21swapper/217:51:052
379799654,43cyclictest3771-21latency_hist17:25:562
379799653,44cyclictest16860-21latency_hist19:00:532
379799653,44cyclictest16860-21latency_hist19:00:532
379799652,45cyclictest14466-21latency_hist18:55:532
379499653,56cyclictest0-21swapper/021:41:110
379499653,56cyclictest0-21swapper/020:06:100
379499653,55cyclictest0-21swapper/020:36:020
379699643,46cyclictest0-21swapper/119:39:221
379699643,46cyclictest0-21swapper/119:39:221
3794996435,13cyclictest0-21swapper/022:21:070
3794996435,13cyclictest0-21swapper/022:21:070
379899633,53cyclictest0-21swapper/317:51:273
379799635,51cyclictest0-21swapper/217:59:332
379799634,51cyclictest0-21swapper/217:46:112
379699633,11cyclictest0-21swapper/121:32:581
379499634,53cyclictest0-21swapper/022:06:160
3794996336,13cyclictest0-21swapper/018:11:230
3794996336,13cyclictest0-21swapper/018:11:230
3798996245,11cyclictest0-21swapper/322:42:473
379799623,43cyclictest28812-21latency_hist19:25:522
379699625,12cyclictest5398-21cut22:01:071
3794996237,12cyclictest0-21swapper/020:34:280
3794996233,13cyclictest0-21swapper/019:51:150
379499623,53cyclictest0-21swapper/022:46:130
379499623,53cyclictest0-21swapper/021:50:510
379499623,53cyclictest0-21swapper/020:52:220
379499623,52cyclictest0-21swapper/019:47:520
379899613,49cyclictest4861-21cpuspeed_turbos22:01:013
3797996137,10cyclictest0-21swapper/218:01:242
379699614,40cyclictest0-21swapper/120:31:161
379699614,13cyclictest0-21swapper/122:10:031
379699613,10cyclictest28798-21fschecks_time22:36:021
3794996131,12cyclictest0-21swapper/019:59:110
379499613,51cyclictest10341-21df21:21:010
379499613,51cyclictest0-21swapper/020:47:260
314032617,10sleep00-21swapper/018:21:190
379899603,50cyclictest0-21swapper/318:10:543
379799603,50cyclictest32434-21latency_hist18:25:542
379799603,50cyclictest0-21swapper/218:41:252
3794996035,12cyclictest0-21swapper/022:26:430
3794996034,13cyclictest0-21swapper/021:50:160
379499603,52cyclictest0-21swapper/020:27:410
379499603,52cyclictest0-21swapper/017:52:080
379699593,42cyclictest0-21swapper/119:09:051
379699593,14cyclictest0-21swapper/120:38:431
379699593,13cyclictest0-21swapper/121:17:541
3796995918,34cyclictest0-21swapper/122:25:371
3796995918,34cyclictest0-21swapper/122:25:371
3794995932,13cyclictest0-21swapper/018:05:540
3794995932,12cyclictest0-21swapper/021:11:540
379499593,50cyclictest0-21swapper/020:01:050
379499593,50cyclictest0-21swapper/019:36:150
379499593,50cyclictest0-21swapper/019:36:150
379899588,44cyclictest0-21swapper/322:25:583
379799584,48cyclictest0-21swapper/217:36:142
379799583,48cyclictest17090-21munin-node19:01:202
379699583,11cyclictest0-21swapper/119:21:191
379699582,11cyclictest0-21swapper/121:01:061
379499583,50cyclictest0-21swapper/018:46:100
379499583,50cyclictest0-21swapper/017:46:080
379499583,48cyclictest0-21swapper/021:05:520
3798995736,8cyclictest6777-21sed18:36:243
379899573,47cyclictest8939-21telnet17:36:063
379799574,47cyclictest0-21swapper/218:16:162
379799574,47cyclictest0-21swapper/218:16:162
379799574,46cyclictest22582-21grep19:11:082
379799573,48cyclictest0-21swapper/217:41:062
379699576,13cyclictest0-21swapper/119:31:171
379699574,30cyclictest0-21swapper/118:56:031
379699574,30cyclictest0-21swapper/118:56:031
379699574,13cyclictest0-21swapper/121:23:331
379699573,13cyclictest0-21swapper/121:40:591
379699573,12cyclictest0-21swapper/122:28:251
379699573,12cyclictest0-21swapper/120:08:141
3796995723,12cyclictest0-21swapper/118:46:041
3796995723,11cyclictest0-21swapper/122:11:581
3796995714,33cyclictest0-21swapper/120:28:301
3794995730,12cyclictest0-21swapper/019:01:080
379499573,48cyclictest0-21swapper/022:51:260
379499573,48cyclictest0-21swapper/018:57:010
379499573,48cyclictest0-21swapper/018:57:010
25122573,48sleep00-21swapper/018:30:540
379899563,47cyclictest0-21swapper/317:59:333
3797995638,9cyclictest2763-21munin-node18:31:052
379799563,48cyclictest0-21swapper/218:27:582
379699565,30cyclictest0-21swapper/121:46:071
379699564,30cyclictest0-21swapper/119:56:251
3796995622,13cyclictest0-21swapper/120:42:051
3794995630,12cyclictest0-21swapper/022:42:160
3794995630,12cyclictest0-21swapper/020:43:370
379499563,49cyclictest0-21swapper/022:34:300
379499563,48cyclictest0-21swapper/017:26:220
379499563,47cyclictest0-21swapper/020:16:000
379499563,47cyclictest0-21swapper/020:16:000
379499563,47cyclictest0-21swapper/018:53:370
379899553,47cyclictest0-21swapper/318:56:273
379899553,47cyclictest0-21swapper/318:56:273
379899553,46cyclictest0-21swapper/318:19:173
379899553,46cyclictest0-21swapper/318:19:173
379799553,46cyclictest0-21swapper/218:06:062
379699555,30cyclictest0-21swapper/120:02:581
379699554,29cyclictest0-21swapper/121:26:591
379699554,12cyclictest0-21swapper/119:46:011
379699553,13cyclictest0-21swapper/121:38:001
379699553,13cyclictest0-21swapper/121:38:001
379699553,12cyclictest0-21swapper/120:58:401
379899543,44cyclictest27739-21sed19:21:163
379899543,42cyclictest7701-21telnet18:41:063
379899542,47cyclictest0-21swapper/317:30:563
379799544,44cyclictest0-21swapper/219:07:182
379799543,45cyclictest0-21swapper/218:40:422
379699545,30cyclictest0-21swapper/122:00:291
379699545,28cyclictest0-21swapper/121:14:231
379699545,27cyclictest0-21swapper/118:11:291
379699545,27cyclictest0-21swapper/118:11:291
379699544,30cyclictest0-21swapper/119:52:161
379699544,30cyclictest0-21swapper/118:26:461
379699544,13cyclictest0-21swapper/119:15:521
3796995438,9cyclictest3615-21gltestperf18:31:121
3794995432,8cyclictest6456-21telnet17:31:070
3794995432,8cyclictest6456-21telnet17:31:070
379499543,45cyclictest0-21swapper/018:30:590
98392533,9sleep10-21swapper/119:44:271
3798995330,12cyclictest0-21swapper/318:51:103
379899532,46cyclictest0-21swapper/318:32:453
379899532,45cyclictest0-21swapper/319:16:213
379799533,45cyclictest0-21swapper/219:19:092
379699537,33cyclictest0-21swapper/120:53:061
379699536,30cyclictest0-21swapper/120:18:511
379699536,30cyclictest0-21swapper/120:18:511
379699536,26cyclictest0-21swapper/120:15:201
379699535,30cyclictest0-21swapper/122:45:131
379699535,30cyclictest0-21swapper/117:41:151
379699535,24cyclictest5555-21munin-run22:50:431
379699534,29cyclictest0-21swapper/119:27:091
379699534,28cyclictest0-21swapper/120:46:201
379699534,11cyclictest0-21swapper/117:30:561
379699533,36cyclictest0-21swapper/118:51:031
379699533,12cyclictest0-21swapper/121:08:231
3796995324,12cyclictest0-21swapper/117:56:171
3796995322,12cyclictest0-21swapper/122:30:581
248599530,5rtkit-daemon2484-21rtkit-daemon18:30:533
379699526,29cyclictest0-21swapper/120:24:111
379699525,26cyclictest0-21swapper/122:55:151
379699524,27cyclictest0-21swapper/122:17:251
379699524,27cyclictest0-21swapper/118:41:291
379499524,43cyclictest0-21swapper/017:56:050
379499523,44cyclictest0-21swapper/018:06:160
3798995129,9cyclictest12203-21kernelversion17:41:183
3798995128,13cyclictest0-21swapper/318:11:063
3798995128,13cyclictest0-21swapper/318:11:063
379799512,12cyclictest0-21swapper/218:46:032
379699514,39cyclictest0-21swapper/118:06:061
379699514,29cyclictest0-21swapper/117:36:051
379699513,30cyclictest0-21swapper/117:54:551
379699513,29cyclictest0-21swapper/119:16:011
379499513,11cyclictest0-21swapper/019:25:510
261162513,9sleep00-21swapper/019:16:570
3794995035,9cyclictest11812-21grep17:41:120
297902503,9sleep10-21swapper/118:17:371
297902503,9sleep10-21swapper/118:17:371
227602503,41sleep10-21swapper/118:04:351
379899494,38cyclictest0-21swapper/317:25:573
379699493,28cyclictest0-21swapper/118:22:321
379499493,27cyclictest0-21swapper/019:15:520
379499493,24cyclictest10934-21latency_hist17:40:560
36252484,37sleep00-21swapper/017:24:110
379699473,28cyclictest0-21swapper/117:31:211
379699473,28cyclictest0-21swapper/117:31:211
3796994630,11cyclictest13856-21cpuspeed_turbos17:46:071
3796994626,15cyclictest0-21swapper/119:00:541
379499463,27cyclictest0-21swapper/018:42:070
379699454,35cyclictest0-21swapper/118:36:071
379499454,36cyclictest0-21swapper/018:36:100
379699414,32cyclictest0-21swapper/117:25:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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