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2025-12-21 - 01:08

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 Sat Dec 20, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11427998936,46cyclictest23790-21cpuspeed_turbos11:58:080
1142799864,74cyclictest0-21swapper/009:43:370
1142799864,12cyclictest0-21swapper/011:36:350
1142799863,31cyclictest0-21swapper/008:26:250
1142799854,12cyclictest0-21swapper/012:26:120
1142799844,32cyclictest0-21swapper/010:23:250
1142799844,32cyclictest0-21swapper/010:23:250
11427998420,12cyclictest0-21swapper/007:20:230
1142799834,33cyclictest0-21swapper/009:53:260
1142799834,31cyclictest0-21swapper/010:28:290
1142799834,28cyclictest0-21swapper/010:42:580
1142799834,12cyclictest0-21swapper/009:08:310
1142799833,31cyclictest0-21swapper/007:33:320
1142799833,28cyclictest24021-21df_abs07:28:220
1142799823,33cyclictest0-21swapper/008:31:250
1142799823,28cyclictest18023-21grep11:43:330
1142799823,28cyclictest18023-21grep11:43:330
11427998219,13cyclictest0-21swapper/007:48:190
1142799814,12cyclictest0-21swapper/010:08:320
1142799813,34cyclictest0-21swapper/011:03:170
1142799813,34cyclictest0-21swapper/011:03:170
11427998124,10cyclictest15797-21sed07:08:400
11427998120,11cyclictest13368-21unixbench_multi07:03:400
1142799804,33cyclictest0-21swapper/007:46:100
1142799804,30cyclictest0-21swapper/011:38:160
1142799804,21cyclictest0-21swapper/007:56:000
1142799804,11cyclictest0-21swapper/009:23:440
11427998019,12cyclictest0-21swapper/008:44:030
11427997914,8cyclictest28377-21head07:38:180
1142799783,35cyclictest0-21swapper/009:58:300
1142799783,33cyclictest0-21swapper/007:23:200
1142799783,12cyclictest0-21swapper/011:28:220
11427997827,8cyclictest6540-21ls12:28:200
11427997827,8cyclictest6540-21ls12:28:200
11427997819,12cyclictest1419-21runrttasks09:28:200
11427997818,7cyclictest23260-21yum-updatesd-he09:43:010
1142799774,33cyclictest0-21swapper/009:33:330
1142799773,30cyclictest0-21swapper/008:18:040
1142799773,22cyclictest0-21swapper/011:18:110
1142799773,22cyclictest0-21swapper/011:08:210
11427997717,11cyclictest0-21swapper/011:48:130
11427997710,27cyclictest4175-21awk09:03:020
11427997710,27cyclictest4175-21awk09:03:020
1142799764,31cyclictest0-21swapper/007:58:250
11427997628,11cyclictest0-21swapper/010:33:330
11427997619,13cyclictest0-21swapper/008:33:300
1142799755,30cyclictest0-21swapper/011:23:100
1142799754,34cyclictest0-21swapper/008:03:280
1142799754,12cyclictest0-21swapper/010:18:320
1142799754,12cyclictest0-21swapper/010:18:320
1142799754,12cyclictest0-21swapper/010:13:180
11427997527,8cyclictest11192-21grep08:08:230
11427997523,9cyclictest1419-21runrttasks10:03:130
11427997523,10cyclictest29278-21wc12:08:190
11427997521,7cyclictest31665-21latency_hist08:53:030
11427997512,15cyclictest0-21swapper/007:17:090
1142799744,26cyclictest0-21swapper/012:13:100
1142799743,12cyclictest0-21swapper/012:03:260
1142799734,14cyclictest0-21swapper/008:38:160
1142799734,11cyclictest0-21swapper/009:18:220
1142799724,29cyclictest0-21swapper/010:46:280
1142799723,31cyclictest0-21swapper/011:13:310
11427997224,9cyclictest22101-21wc11:53:180
1142799714,29cyclictest0-21swapper/010:53:120
1142799693,20cyclictest0-21swapper/012:20:300
1142799683,32cyclictest0-21swapper/009:13:310
248599640,5rtkit-daemon2484-21rtkit-daemon12:03:132
73082624,48sleep30-21swapper/307:58:393
11429996125,10cyclictest23289-21awk09:43:002
248599600,4rtkit-daemon2484-21rtkit-daemon08:32:292
11430996044,10cyclictest21998-21gltestperf09:38:203
11429996022,13cyclictest0-21swapper/208:13:352
1142999594,30cyclictest0-21swapper/207:43:062
11429995922,13cyclictest0-21swapper/210:33:272
11429995922,13cyclictest0-21swapper/207:33:262
11430995842,10cyclictest31571-21gltestperf09:58:213
1142999585,30cyclictest0-21swapper/207:53:282
1142999585,29cyclictest0-21swapper/211:18:192
11429995839,11cyclictest14315-21grep09:23:162
1142899584,36cyclictest0-21swapper/112:08:161
1142999575,28cyclictest0-21swapper/210:53:242
1142999575,28cyclictest0-21swapper/209:08:202
1142999575,28cyclictest0-21swapper/208:33:292
1142999575,28cyclictest0-21swapper/208:03:172
1142999575,28cyclictest0-21swapper/207:58:242
1142999575,28cyclictest0-21swapper/207:28:362
1142999574,31cyclictest0-21swapper/210:13:222
1142999574,29cyclictest0-21swapper/211:57:552
1142999574,28cyclictest22227-21chrt07:23:312
1142999574,28cyclictest0-21swapper/207:13:072
1142899574,44cyclictest26053-21aten_r1power_vo09:48:131
1142999565,27cyclictest0-21swapper/212:13:102
1142999564,30cyclictest0-21swapper/208:23:372
1142999564,28cyclictest0-21swapper/209:43:252
1142999564,28cyclictest0-21swapper/208:18:342
1142999564,28cyclictest0-21swapper/208:18:342
1142999564,28cyclictest0-21swapper/207:18:362
266372553,44sleep10-21swapper/108:39:561
248599550,5rtkit-daemon2484-21rtkit-daemon09:53:332
248599550,5rtkit-daemon2484-21rtkit-daemon08:58:282
248599550,5rtkit-daemon2484-21rtkit-daemon08:58:282
248599550,5rtkit-daemon2484-21rtkit-daemon07:43:082
165332553,11sleep10-21swapper/111:43:141
165332553,11sleep10-21swapper/111:43:141
126632554,43sleep30-21swapper/307:03:303
1142999555,41cyclictest1419-21runrttasks07:05:232
1142899554,27cyclictest0-21swapper/112:03:131
1142899554,27cyclictest0-21swapper/111:36:351
11428995522,13cyclictest0-21swapper/107:03:341
11428995520,13cyclictest0-21swapper/110:08:211
11428995519,13cyclictest0-21swapper/111:58:131
11428995519,13cyclictest0-21swapper/110:23:201
11428995519,13cyclictest0-21swapper/110:23:201
248599540,5rtkit-daemon2484-21rtkit-daemon11:43:213
248599540,5rtkit-daemon2484-21rtkit-daemon11:43:213
248599540,5rtkit-daemon2484-21rtkit-daemon11:13:302
248599540,5rtkit-daemon2484-21rtkit-daemon11:01:162
248599540,5rtkit-daemon2484-21rtkit-daemon10:43:312
248599540,5rtkit-daemon2484-21rtkit-daemon08:48:282
243942542,10sleep30-21swapper/308:36:483
11429995437,10cyclictest20377-21grep11:48:292
1142899544,32cyclictest0-21swapper/107:23:261
11428995422,13cyclictest0-21swapper/111:08:171
11428995421,11cyclictest0-21swapper/110:16:231
312632532,10sleep30-21swapper/311:03:383
312632532,10sleep30-21swapper/311:03:383
287632533,11sleep10-21swapper/107:38:221
264252534,12sleep20-21swapper/209:48:172
248599530,5rtkit-daemon2484-21rtkit-daemon12:28:202
248599530,5rtkit-daemon2484-21rtkit-daemon12:28:202
248599530,5rtkit-daemon2484-21rtkit-daemon09:18:352
248599530,5rtkit-daemon2484-21rtkit-daemon09:13:352
248599530,5rtkit-daemon2484-21rtkit-daemon09:04:353
248599530,4rtkit-daemon2484-21rtkit-daemon10:03:332
195232532,10sleep30-21swapper/308:25:313
1424425319,28sleep314309-21df_abs11:38:123
135482532,10sleep30-21swapper/311:36:513
11430995335,11cyclictest3662-21unixbench_multi11:13:303
1142999535,40cyclictest0-21swapper/208:53:202
11429995323,13cyclictest0-21swapper/211:28:202
1142899535,29cyclictest0-21swapper/108:13:221
1142899535,28cyclictest0-21swapper/108:43:331
1142899534,28cyclictest0-21swapper/111:54:491
1142899534,28cyclictest0-21swapper/110:18:151
1142899534,28cyclictest0-21swapper/110:18:151
1142899534,27cyclictest0-21swapper/109:08:021
1142899534,27cyclictest0-21swapper/108:28:041
1142899534,25cyclictest24439-21awk10:52:571
1142899534,25cyclictest0-21swapper/107:10:541
11428995337,11cyclictest29495-21head09:53:251
1142899533,28cyclictest0-21swapper/112:28:171
1142899533,28cyclictest0-21swapper/112:28:171
11428995320,12cyclictest0-21swapper/108:53:131
75292522,10sleep30-21swapper/310:15:423
41322520,4sleep34220-21iwlist07:53:273
256812522,9sleep30-21swapper/307:32:323
248599520,5rtkit-daemon2484-21rtkit-daemon11:23:152
248599520,5rtkit-daemon2484-21rtkit-daemon09:58:262
248599520,5rtkit-daemon2484-21rtkit-daemon09:33:192
248599520,5rtkit-daemon2484-21rtkit-daemon08:43:282
248599520,4rtkit-daemon2484-21rtkit-daemon12:23:122
248599520,4rtkit-daemon2484-21rtkit-daemon10:48:162
198652523,42sleep10-21swapper/111:48:221
1143099524,40cyclictest0-21swapper/310:58:413
11430995220,13cyclictest0-21swapper/308:38:173
1142999523,43cyclictest255732sleep212:02:452
1142899525,29cyclictest0-21swapper/112:23:071
1142899525,26cyclictest0-21swapper/108:31:061
1142899525,24cyclictest0-21swapper/108:11:021
1142899524,28cyclictest0-21swapper/111:38:201
1142899524,27cyclictest0-21swapper/111:28:191
1142899524,27cyclictest0-21swapper/109:41:181
1142899524,27cyclictest0-21swapper/107:48:171
1142899524,26cyclictest0-21swapper/107:35:581
11428995233,12cyclictest24717-21needreboot09:43:291
98792513,10sleep20-21swapper/210:20:172
98792513,10sleep20-21swapper/210:20:172
296612514,40sleep30-21swapper/312:08:273
25892513,10sleep10-21swapper/112:19:331
256352513,42sleep325682-21iostat10:53:233
248599510,6rtkit-daemon2484-21rtkit-daemon09:32:342
248599510,5rtkit-daemon2484-21rtkit-daemon12:18:282
1143099514,28cyclictest0-21swapper/312:23:233
1143099514,26cyclictest0-21swapper/312:15:113
11430995135,10cyclictest13588-21gltestperf10:28:193
11430995134,11cyclictest14324-21cut09:23:163
11430995119,13cyclictest0-21swapper/308:43:293
11429995122,9cyclictest26893-21munin-run08:43:022
1142899515,28cyclictest0-21swapper/108:48:361
1142899514,40cyclictest0-21swapper/109:08:261
1142899514,28cyclictest0-21swapper/109:18:191
1142899514,28cyclictest0-21swapper/107:28:361
1142899514,26cyclictest0-21swapper/107:15:551
1142899514,25cyclictest0-21swapper/111:18:241
11428995132,12cyclictest16942-21head08:18:381
11428995132,12cyclictest16942-21head08:18:381
304852502,10sleep30-21swapper/307:42:553
294392504,39sleep10-21swapper/111:03:001
294392504,39sleep10-21swapper/111:03:001
26502502,10sleep30-21swapper/310:04:183
13512503,10sleep20-21swapper/211:10:142
1143099504,28cyclictest0-21swapper/308:03:323
11430995033,11cyclictest24724-21needreboot09:43:293
11430995033,10cyclictest8539-21grep09:08:353
11430995032,12cyclictest4031-21head10:08:203
1143099503,42cyclictest0-21swapper/309:52:163
1143099503,26cyclictest0-21swapper/307:45:223
1143099503,21cyclictest0-21swapper/307:48:283
11430995020,23cyclictest0-21swapper/308:18:043
11430995018,14cyclictest0-21swapper/310:48:223
1142999505,28cyclictest0-21swapper/207:48:412
1142999504,29cyclictest0-21swapper/209:03:352
1142999504,29cyclictest0-21swapper/208:08:182
207082492,41sleep30-21swapper/309:35:443
206002492,9sleep30-21swapper/311:50:213
1143099494,27cyclictest0-21swapper/308:57:263
1143099494,27cyclictest0-21swapper/308:08:323
11430994931,11cyclictest24490-21kernelversion11:58:173
1142999495,27cyclictest0-21swapper/211:33:092
1142999494,28cyclictest0-21swapper/211:03:202
1142999494,28cyclictest0-21swapper/211:03:202
1142999494,28cyclictest0-21swapper/210:28:132
1142999494,27cyclictest0-21swapper/207:13:242
11429994920,13cyclictest0-21swapper/210:08:242
1142899493,41cyclictest0-21swapper/107:21:241
1142799493,30cyclictest0-21swapper/010:58:160
110962493,40sleep30-21swapper/311:31:073
326452483,10sleep10-21swapper/112:16:351
279222482,40sleep30-21swapper/312:07:143
252402483,38sleep10-21swapper/110:53:171
219842483,39sleep30-21swapper/310:47:183
1143099484,27cyclictest0-21swapper/311:18:153
1143099484,27cyclictest0-21swapper/310:38:323
1143099484,27cyclictest0-21swapper/307:13:353
1143099483,27cyclictest0-21swapper/310:18:173
1143099483,27cyclictest0-21swapper/310:18:173
1143099483,24cyclictest0-21swapper/310:33:123
11430994819,13cyclictest0-21swapper/310:23:113
11430994819,13cyclictest0-21swapper/310:23:113
1142999485,35cyclictest0-21swapper/211:38:082
1142899485,34cyclictest0-21swapper/111:23:091
11428994833,9cyclictest28756-21unixbench_multi10:58:311
11428994830,11cyclictest14050-21aten_r1power_fr09:23:141
1142899483,27cyclictest0-21swapper/110:33:281
11428994819,12cyclictest0-21swapper/109:16:181
56212473,37sleep10-21swapper/107:58:091
51452473,38sleep10-21swapper/107:54:501
183082473,37sleep10-21swapper/109:30:351
150532473,9sleep315058-21irqstats07:08:303
1143099474,26cyclictest0-21swapper/308:21:043
1143099474,26cyclictest0-21swapper/308:21:043
1143099473,26cyclictest0-21swapper/307:18:273
11430994729,11cyclictest32668-21gltestperf11:08:173
11430994717,13cyclictest0-21swapper/307:38:053
11429994729,11cyclictest18310-21grep10:38:182
11429994719,12cyclictest0-21swapper/212:08:182
1142899475,14cyclictest0-21swapper/111:13:181
11428994729,12cyclictest1830-21wc10:03:241
71342462,37sleep30-21swapper/311:23:133
248599460,5rtkit-daemon2484-21rtkit-daemon06:58:333
135222463,37sleep30-21swapper/309:20:293
1143099464,26cyclictest0-21swapper/307:23:193
11430994628,11cyclictest31182-21unixbench-2d08:48:373
1143099462,32cyclictest0-21swapper/308:29:493
1142999465,13cyclictest0-21swapper/210:23:112
1142999465,13cyclictest0-21swapper/210:23:112
1142999464,24cyclictest0-21swapper/211:43:122
1142999464,24cyclictest0-21swapper/211:43:122
1142899464,26cyclictest0-21swapper/110:28:121
11428994626,13cyclictest0-21swapper/108:38:041
11428994626,12cyclictest31296-21df_abs07:43:221
11428994617,12cyclictest0-21swapper/108:03:421
228672452,10sleep30-21swapper/311:53:483
1142899453,27cyclictest17509-21aten_r1power_cu10:38:091
11428994525,13cyclictest0-21swapper/110:43:111
11428994525,13cyclictest0-21swapper/108:58:361
11428994525,13cyclictest0-21swapper/108:58:361
1142799454,33cyclictest0-21swapper/010:48:120
111172454,6sleep00-21swapper/006:59:330
75992442,9sleep30-21swapper/312:32:413
75992442,9sleep30-21swapper/312:32:413
326992443,11sleep10-21swapper/110:01:181
11430994426,11cyclictest10888-21unixbench_multi09:13:353
1142899443,25cyclictest0-21swapper/109:33:151
304442432,35sleep30-21swapper/309:57:573
1143099433,24cyclictest0-21swapper/309:31:163
11430994328,9cyclictest1388-21head12:18:153
1142799434,33cyclictest0-21swapper/008:58:020
11427994327,10cyclictest28044-21crond09:53:000
1142899424,12cyclictest0-21swapper/107:03:081
1142799423,34cyclictest0-21swapper/009:03:140
1143099404,30cyclictest0-21swapper/308:58:193
1143099404,30cyclictest0-21swapper/308:58:193
1142799403,11cyclictest0-21swapper/008:18:380
1142799403,11cyclictest0-21swapper/008:18:380
1142999323,12cyclictest0-21swapper/207:03:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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