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2026-08-30 - 03:24

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 Sun Aug 30, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
387421170,5sleep33876-21tr19:42:443
387421170,5sleep33876-21tr19:42:443
686921040,5sleep16865-21grep21:23:001
1179799944,14cyclictest0-21swapper/320:07:443
16292920,27sleep2281ktimersoftd/220:27:462
1179699914,71cyclictest0-21swapper/220:37:452
1179799904,26cyclictest0-21swapper/317:42:363
1179799904,26cyclictest0-21swapper/317:42:363
1179799895,31cyclictest17416-21runrttasks22:28:013
1179799895,31cyclictest17416-21runrttasks22:28:013
1179699893,80cyclictest0-21swapper/222:55:472
1179799885,26cyclictest0-21swapper/321:27:493
1179799885,26cyclictest0-21swapper/318:43:043
11797998720,12cyclictest0-21swapper/319:48:083
1179799864,43cyclictest0-21swapper/322:09:343
1179799864,33cyclictest405-21gltestperf22:52:413
1179699863,71cyclictest0-21swapper/220:17:432
1179799854,28cyclictest0-21swapper/319:32:523
11797998520,13cyclictest0-21swapper/323:00:313
1179699854,72cyclictest0-21swapper/221:42:522
1179699854,72cyclictest0-21swapper/221:42:522
1179699853,75cyclictest0-21swapper/222:57:482
1179699853,74cyclictest11966-21grep19:53:032
11796998523,56cyclictest0-21swapper/221:26:472
11796998523,55cyclictest0-21swapper/221:03:322
11797998437,10cyclictest28086-21runrttasks22:46:053
11797998433,12cyclictest0-21swapper/321:59:173
1179699844,73cyclictest0-21swapper/221:55:352
1179699844,72cyclictest0-21swapper/220:12:442
11797998320,12cyclictest0-21swapper/321:06:163
1179699834,72cyclictest1227-21runrttasks22:37:442
1179699834,71cyclictest0-21swapper/220:57:412
1179699833,73cyclictest0-21swapper/221:07:502
1179699833,72cyclictest29546-21grep22:47:432
1179699833,72cyclictest0-21swapper/223:07:342
1179699833,72cyclictest0-21swapper/223:07:342
11796998329,39cyclictest3319-21diskmemload21:58:182
11796998322,54cyclictest0-21swapper/222:06:542
11797998231,13cyclictest0-21swapper/320:28:023
11797998222,12cyclictest0-21swapper/320:44:473
1179699824,72cyclictest0-21swapper/222:08:352
1179699824,71cyclictest0-21swapper/222:24:442
1179699824,70cyclictest0-21swapper/220:48:092
1179699824,70cyclictest0-21swapper/219:47:592
1179699823,73cyclictest0-21swapper/221:27:272
1179699823,71cyclictest0-21swapper/220:07:002
1179699823,11cyclictest0-21swapper/219:28:012
11796998229,46cyclictest0-21swapper/223:05:322
11796998226,49cyclictest21065-21tune2fs20:07:492
11797998119,26cyclictest19830-21interrupts22:32:463
1179699814,70cyclictest0-21swapper/219:42:532
1179699814,70cyclictest0-21swapper/219:42:532
11796998132,33cyclictest23885-21munin-node19:18:032
1179699812,74cyclictest0-21swapper/222:46:202
219499800,28rtkit-daemon0-21swapper/017:43:411
1179799806,35cyclictest0-21swapper/321:24:433
1179799806,25cyclictest0-21swapper/322:18:453
1179699804,68cyclictest0-21swapper/218:38:002
1179699803,69cyclictest0-21swapper/222:30:372
1179699803,69cyclictest0-21swapper/222:30:372
1179699803,69cyclictest0-21swapper/220:34:252
11796998021,11cyclictest0-21swapper/221:37:462
1179699802,72cyclictest0-21swapper/221:14:142
1179699802,71cyclictest20109-21ntpdc22:32:512
1179699794,67cyclictest0-21swapper/221:47:492
11796997925,48cyclictest909-21crond22:22:232
11796997921,51cyclictest0-21swapper/221:17:362
11796997920,11cyclictest0-21swapper/217:58:462
1179699783,66cyclictest0-21swapper/221:34:532
11796997827,44cyclictest26588-21tr19:22:452
1179699782,69cyclictest0-21swapper/220:43:522
11796997814,11cyclictest0-21swapper/219:57:482
1179799776,26cyclictest0-21swapper/323:03:013
1179699774,25cyclictest0-21swapper/220:24:472
1179699774,25cyclictest0-21swapper/220:24:472
1179699773,67cyclictest0-21swapper/220:52:492
11796997724,46cyclictest1227-21runrttasks19:37:462
11796997715,12cyclictest0-21swapper/219:07:422
11797997637,11cyclictest0-21swapper/321:37:343
11797997618,9cyclictest15836-21switchtime20:48:003
1179699764,65cyclictest0-21swapper/218:35:172
1179699764,65cyclictest0-21swapper/218:12:472
1179699753,64cyclictest0-21swapper/218:02:492
1179699752,27cyclictest14272-21cat17:47:352
11796997513,12cyclictest0-21swapper/218:07:512
1179799745,25cyclictest0-21swapper/320:58:033
1179799744,27cyclictest0-21swapper/320:01:463
11797997434,12cyclictest0-21swapper/320:19:013
11797997434,11cyclictest0-21swapper/320:26:013
11797997434,11cyclictest0-21swapper/320:26:013
1179699744,63cyclictest0-21swapper/222:12:372
11796997419,8cyclictest1227-21runrttasks18:29:542
11796997417,8cyclictest1227-21runrttasks19:16:052
1179799734,39cyclictest0-21swapper/322:47:523
11796997211,11cyclictest0-21swapper/218:42:512
11796997121,8cyclictest1227-21runrttasks18:52:032
11796997116,9cyclictest1227-21runrttasks19:33:472
11796997111,52cyclictest0-21swapper/218:22:522
219499700,6rtkit-daemon2193-21rtkit-daemon18:12:483
11797997047,10cyclictest0-21swapper/320:03:003
11796997022,9cyclictest1227-21runrttasks18:55:212
11796996923,8cyclictest1227-21runrttasks17:54:072
11796996912,12cyclictest0-21swapper/219:02:512
11796996912,12cyclictest0-21swapper/219:02:512
11796996721,8cyclictest1227-21runrttasks17:52:222
11796996617,9cyclictest29078-21grep18:17:472
11796996617,9cyclictest29078-21grep18:17:472
1179699654,23cyclictest0-21swapper/219:02:312
1179699654,23cyclictest0-21swapper/219:02:312
1179199624,39cyclictest0-21swapper/020:02:460
11795996143,11cyclictest9045-21needreboot18:42:561
1179199614,12cyclictest0-21swapper/020:37:420
119752604,11sleep10-21swapper/123:09:591
119752604,11sleep10-21swapper/123:09:591
11797996023,10cyclictest22231-21tune2fs21:47:453
11796996016,7cyclictest11770-21latency_hist17:42:352
11796996016,7cyclictest11770-21latency_hist17:42:352
1179199604,36cyclictest0-21swapper/021:29:170
325532593,49sleep00-21swapper/020:25:150
325532593,49sleep00-21swapper/020:25:150
29642594,48sleep00-21swapper/022:57:290
120562596,13sleep00-21swapper/023:10:190
120562596,13sleep00-21swapper/023:10:190
1179199594,12cyclictest0-21swapper/019:47:310
1179199594,12cyclictest0-21swapper/019:47:310
244612585,12sleep10-21swapper/121:52:151
11797995838,15cyclictest0-21swapper/323:07:533
11797995838,15cyclictest0-21swapper/323:07:533
11795995817,22cyclictest0-21swapper/120:22:411
11795995817,22cyclictest0-21swapper/120:22:411
1179199584,13cyclictest0-21swapper/021:40:100
166612573,9sleep00-21swapper/020:50:020
147652574,46sleep10-21swapper/119:57:551
1179599574,27cyclictest2336-21ssh20:27:531
1179199574,13cyclictest0-21swapper/020:21:490
1179199574,12cyclictest0-21swapper/022:17:470
11791995736,12cyclictest14411-21sed19:57:490
291372564,46sleep10-21swapper/120:19:481
266742564,45sleep326800-21df_abs19:22:463
212192563,7sleep121223-21ssh22:35:001
1179199565,12cyclictest0-21swapper/019:53:410
1179199564,12cyclictest0-21swapper/021:07:390
1179199563,38cyclictest0-21swapper/021:34:440
6142552,47sleep1619-21sh21:14:501
1179599553,38cyclictest0-21swapper/119:17:581
11795995512,25cyclictest0-21swapper/122:27:551
11795995512,25cyclictest0-21swapper/122:27:551
1179199554,45cyclictest0-21swapper/021:53:430
1179199554,31cyclictest0-21swapper/020:52:490
11791995511,26cyclictest0-21swapper/022:12:480
242792543,10sleep00-21swapper/022:39:070
219499540,7rtkit-daemon0-21swapper/321:25:400
1179599544,27cyclictest0-21swapper/121:06:371
11795995437,11cyclictest12494-21gltestperf21:32:441
11795995435,12cyclictest23018-21gltestperf22:37:431
11795995421,26cyclictest2722-21cpuspeed_turbos22:07:401
1179199544,31cyclictest0-21swapper/018:52:320
1179199544,29cyclictest0-21swapper/020:58:000
196332533,44sleep10-21swapper/120:06:091
163352533,43sleep10-21swapper/119:00:311
163352533,43sleep10-21swapper/119:00:311
1179799539,37cyclictest18183-21forks20:52:443
11797995336,13cyclictest0-21swapper/320:34:003
11797995336,12cyclictest0-21swapper/322:24:263
1179599536,33cyclictest0-21swapper/118:52:441
1179599535,30cyclictest0-21swapper/118:17:541
1179599535,30cyclictest0-21swapper/118:17:541
1179599535,25cyclictest31168-21aten2.4-expect19:32:431
1179599534,33cyclictest0-21swapper/121:28:401
1179599534,27cyclictest16422-21python21:37:561
11795995335,10cyclictest27091-21head19:22:501
11795995322,13cyclictest0-21swapper/119:56:401
1179199535,30cyclictest0-21swapper/022:52:180
1179199535,30cyclictest0-21swapper/019:48:010
1179199535,12cyclictest0-21swapper/019:14:260
1179199534,43cyclictest0-21swapper/020:32:310
1179199534,30cyclictest0-21swapper/020:13:210
11791995336,10cyclictest26866-21df18:12:490
1179199533,37cyclictest0-21swapper/022:27:460
1179199533,37cyclictest0-21swapper/022:27:460
1179199533,35cyclictest0-21swapper/019:17:440
249062522,43sleep30-21swapper/319:17:553
206412522,44sleep30-21swapper/321:45:123
206412522,44sleep30-21swapper/321:45:123
187852523,43sleep10-21swapper/117:55:381
11797995236,12cyclictest0-21swapper/320:39:013
11797995235,13cyclictest0-21swapper/321:20:243
11797995235,12cyclictest0-21swapper/321:54:473
11797995235,12cyclictest0-21swapper/321:10:233
11797995235,12cyclictest0-21swapper/320:14:593
11797995226,11cyclictest0-21swapper/322:37:463
1179599525,28cyclictest0-21swapper/117:47:531
1179599525,14cyclictest0-21swapper/122:13:541
11795995235,10cyclictest32179-21gltestperf22:02:431
1179599523,29cyclictest0-21swapper/119:48:031
11795995221,14cyclictest0-21swapper/121:46:581
11795995221,14cyclictest0-21swapper/121:46:581
11795995220,12cyclictest2797-21iostat_ios21:17:501
1179199525,29cyclictest0-21swapper/022:22:570
1179199525,29cyclictest0-21swapper/021:18:370
1179199524,30cyclictest0-21swapper/019:27:590
1179199524,30cyclictest0-21swapper/018:08:040
1179199524,30cyclictest0-21swapper/017:57:560
1179199524,29cyclictest0-21swapper/022:02:360
1179199524,29cyclictest0-21swapper/021:12:490
1179199524,27cyclictest0-21swapper/020:45:460
11791995234,10cyclictest24518-21cpuspeed_turbos21:02:410
1179199523,31cyclictest0-21swapper/018:27:510
1179199523,31cyclictest0-21swapper/018:17:530
1179199523,31cyclictest0-21swapper/018:17:530
11791995219,14cyclictest0-21swapper/019:24:380
290872513,42sleep10-21swapper/121:57:481
227092512,43sleep00-21swapper/020:10:200
208392513,41sleep10-21swapper/120:57:331
187242512,43sleep30-21swapper/319:05:333
187242512,43sleep30-21swapper/319:05:333
119452514,40sleep10-21swapper/120:42:501
11797995132,15cyclictest0-21swapper/321:35:363
1179599515,33cyclictest0-21swapper/122:47:401
1179599515,28cyclictest0-21swapper/118:02:541
1179599515,27cyclictest20840-21df_inode20:07:461
1179599515,26cyclictest7167-21sed23:02:421
1179599515,13cyclictest0-21swapper/119:46:441
1179599515,13cyclictest0-21swapper/119:46:441
1179599514,38cyclictest0-21swapper/122:17:421
1179599514,29cyclictest0-21swapper/121:52:591
1179599514,29cyclictest0-21swapper/118:08:091
1179599514,29cyclictest0-21swapper/117:58:011
1179599514,28cyclictest32369-21wc22:52:361
1179599514,28cyclictest0-21swapper/121:07:491
1179599514,28cyclictest0-21swapper/118:32:481
11795995122,12cyclictest0-21swapper/120:52:401
1179199514,29cyclictest0-21swapper/022:32:390
1179199514,29cyclictest0-21swapper/018:52:550
1179199514,29cyclictest0-21swapper/018:38:010
1179199514,29cyclictest0-21swapper/018:22:490
1179199514,28cyclictest0-21swapper/018:42:550
1179199514,26cyclictest0-21swapper/019:37:430
11791995124,9cyclictest22872-21proc_pri21:47:550
11791995120,13cyclictest0-21swapper/017:47:500
11791995119,13cyclictest0-21swapper/020:27:430
11791995113,22cyclictest0-21swapper/021:58:580
219499500,25rtkit-daemon0-21swapper/022:46:070
11797995035,11cyclictest0-21swapper/322:15:173
11797995034,12cyclictest0-21swapper/321:13:253
11797995026,10cyclictest0-21swapper/322:02:393
11797995022,12cyclictest0-21swapper/318:38:093
11797995021,24cyclictest0-21swapper/317:48:093
1179599505,28cyclictest0-21swapper/122:58:381
1179599505,27cyclictest0-21swapper/120:49:251
1179599504,41cyclictest0-21swapper/120:32:411
1179599504,28cyclictest0-21swapper/122:22:471
1179599504,28cyclictest0-21swapper/118:37:561
1179599504,27cyclictest0-21swapper/120:37:511
1179599504,27cyclictest0-21swapper/118:28:071
11795995030,12cyclictest23647-21crond19:17:311
11795995020,13cyclictest0-21swapper/122:45:101
11795995020,13cyclictest0-21swapper/118:14:091
11795995019,14cyclictest0-21swapper/120:13:481
1179199507,26cyclictest0-21swapper/021:46:550
1179199507,26cyclictest0-21swapper/021:46:550
1179199504,29cyclictest0-21swapper/018:03:040
1179199504,28cyclictest0-21swapper/023:02:470
1179199504,28cyclictest0-21swapper/019:33:040
1179199504,28cyclictest0-21swapper/019:02:460
1179199504,28cyclictest0-21swapper/019:02:460
1179199504,27cyclictest0-21swapper/022:55:550
1179199503,29cyclictest0-21swapper/022:07:410
1179199503,28cyclictest0-21swapper/017:47:350
233172492,40sleep30-21swapper/319:13:153
203752493,39sleep120399-21ntpq19:07:571
187472493,39sleep30-21swapper/317:55:083
1179599494,28cyclictest0-21swapper/119:03:041
1179599494,28cyclictest0-21swapper/119:03:041
1179199493,27cyclictest0-21swapper/018:57:380
1179199493,27cyclictest0-21swapper/018:57:380
211192482,40sleep30-21swapper/318:00:003
11797994821,12cyclictest31164-21aten2.4-expect18:22:443
1179599484,26cyclictest0-21swapper/119:31:371
1179599484,26cyclictest0-21swapper/118:24:401
1179199484,26cyclictest0-21swapper/019:11:380
1179199484,24cyclictest0-21swapper/017:52:460
30952473,38sleep30-21swapper/318:29:143
305062473,38sleep30-21swapper/319:28:393
121962473,38sleep10-21swapper/118:50:081
1179799476,25cyclictest0-21swapper/319:55:343
1179799472,40cyclictest0-21swapper/319:37:523
11797994616,10cyclictest14772-21crond19:02:263
11797994616,10cyclictest14772-21crond19:02:263
1179599464,26cyclictest0-21swapper/119:39:301
11797994516,9cyclictest29601-21seq18:17:533
11797994516,9cyclictest29601-21seq18:17:533
1179599454,34cyclictest0-21swapper/117:42:351
1179599454,34cyclictest0-21swapper/117:42:351
1179199454,24cyclictest0-21swapper/018:32:430
11797994429,11cyclictest0-21swapper/318:47:563
11797994426,13cyclictest0-21swapper/319:12:323
115202444,34sleep00-21swapper/017:39:300
115202444,34sleep00-21swapper/017:39:300
1179799433,34cyclictest0-21swapper/318:07:473
11797994329,10cyclictest0-21swapper/318:02:503
11797994324,15cyclictest0-21swapper/318:57:143
11797994321,12cyclictest3929-21cpuspeed_turbos18:32:453
11797994224,13cyclictest0-21swapper/317:42:463
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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