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2026-06-10 - 20:41

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 Wed Jun 10, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
690421180,4sleep26906-21sa112:18:022
797499966,69cyclictest0-21swapper/111:51:181
797499966,69cyclictest0-21swapper/111:51:181
7976999543,12cyclictest29740-21needreboot09:38:333
797499955,13cyclictest0-21swapper/110:58:321
797499954,14cyclictest0-21swapper/110:36:521
797499944,16cyclictest28381-21unixbench_singl10:23:411
797499935,69cyclictest0-21swapper/110:03:371
797499924,13cyclictest0-21swapper/112:27:541
7974999221,49cyclictest20107-21unixbench_singl09:23:421
7974999219,66cyclictest4017-21latency_hist09:03:101
797499914,66cyclictest0-21swapper/111:58:281
797499914,14cyclictest0-21swapper/110:22:091
797499914,13cyclictest0-21swapper/112:08:301
797499914,13cyclictest0-21swapper/111:37:431
7974999127,54cyclictest0-21swapper/111:29:481
7974999115,7cyclictest107550irq/46-eth011:38:231
797499909,9cyclictest0-21swapper/109:33:311
797499905,65cyclictest0-21swapper/110:41:571
797499905,65cyclictest0-21swapper/109:03:251
797499904,68cyclictest0-21swapper/111:21:481
797499904,15cyclictest0-21swapper/109:58:221
7974999020,52cyclictest0-21swapper/110:50:131
114712900,7sleep211470-21gltestperf12:23:222
7975998921,59cyclictest0-21swapper/209:20:392
797499895,14cyclictest0-21swapper/109:28:301
797499894,65cyclictest0-21swapper/108:28:411
797499894,13cyclictest0-21swapper/108:49:111
797499894,11cyclictest9078-21yum12:18:401
7974998917,10cyclictest2610-21cpuspeed11:23:181
797499885,13cyclictest0-21swapper/109:43:191
797499884,74cyclictest24365-21runrttasks07:29:251
797499884,12cyclictest0-21swapper/107:58:401
7975998728,38cyclictest1547-21nscd11:32:382
797499874,67cyclictest0-21swapper/109:50:281
797499874,23cyclictest0-21swapper/111:53:271
797499874,14cyclictest0-21swapper/110:17:321
797499869,56cyclictest0-21swapper/111:14:331
797499869,56cyclictest0-21swapper/111:14:331
797499864,66cyclictest0-21swapper/112:06:571
7974998631,47cyclictest0-21swapper/109:18:421
797499863,74cyclictest24533-21gltestperf08:38:291
7974998615,8cyclictest107550irq/46-eth010:12:131
797499854,73cyclictest0-21swapper/109:53:441
797499854,63cyclictest0-21swapper/110:45:281
797499854,61cyclictest0-21swapper/109:16:581
797499854,59cyclictest0-21swapper/110:57:531
797499854,22cyclictest0-21swapper/111:04:161
797499854,21cyclictest0-21swapper/110:28:271
7974998514,12cyclictest0-21swapper/109:10:441
7974998514,12cyclictest0-21swapper/109:10:441
7975998432,43cyclictest4131-21grep11:23:382
797499845,56cyclictest0-21swapper/111:12:281
797499845,15cyclictest0-21swapper/111:47:251
797499845,14cyclictest0-21swapper/108:18:381
797499844,70cyclictest0-21swapper/112:13:331
7975998325,52cyclictest30915-21ssh10:28:282
7974998316,10cyclictest0-21swapper/109:38:471
7974998313,11cyclictest0-21swapper/108:17:071
7975998232,33cyclictest22052-21cpuspeed_turbos09:28:222
7975998222,35cyclictest8808-21sed12:18:362
797499825,67cyclictest0-21swapper/107:03:321
797499824,70cyclictest0-21swapper/107:13:351
797499824,13cyclictest0-21swapper/108:43:421
7974998228,47cyclictest2531-21cpuspeed_turbos07:53:271
7974998224,49cyclictest27608-21tr07:38:261
7974998216,46cyclictest0-21swapper/108:53:311
7974998212,10cyclictest107550irq/46-eth007:08:331
797499814,16cyclictest0-21swapper/108:03:331
7975998022,42cyclictest0-21swapper/211:33:302
797499804,67cyclictest0-21swapper/108:23:241
797499804,67cyclictest0-21swapper/108:23:241
7974998033,39cyclictest18936-21needreboot07:18:381
7974998026,46cyclictest9530-21proc_pri06:58:421
7974998026,46cyclictest9530-21proc_pri06:58:421
7974998026,44cyclictest11091-21unixbench_singl08:08:461
7975997932,26cyclictest23016-21head08:33:462
7975997927,34cyclictest0-21swapper/212:03:352
7975997922,49cyclictest0-21swapper/210:51:202
7975997920,51cyclictest0-21swapper/210:56:242
797499798,60cyclictest0-21swapper/106:58:161
797499794,12cyclictest29728-21aten2.4-expect07:43:241
797499794,12cyclictest29728-21aten2.4-expect07:43:241
7973997919,52cyclictest5773-21ps10:38:350
7973997913,58cyclictest0-21swapper/010:08:180
7975997832,13cyclictest18741-21sed10:58:242
7975997831,39cyclictest341-21ssh11:18:362
7975997821,37cyclictest0-21swapper/211:38:152
797499783,20cyclictest20122-21munin-node07:23:341
7975997729,40cyclictest1124-21snmpd11:58:382
7975997729,32cyclictest4182-21grep09:48:332
7975997725,33cyclictest0-21swapper/210:33:292
7975997723,46cyclictest0-21swapper/210:46:572
7975997722,47cyclictest0-21swapper/209:37:082
7975997721,50cyclictest0-21swapper/209:03:242
7975997720,50cyclictest0-21swapper/211:03:192
7975997717,34cyclictest0-21swapper/209:23:482
797499774,56cyclictest0-21swapper/108:33:241
7974997729,41cyclictest32424-21tr07:48:271
7973997718,51cyclictest30490-21grep07:43:320
7973997718,51cyclictest30490-21grep07:43:320
7975997633,35cyclictest13385-21cpuspeed_turbos10:03:192
7975997632,35cyclictest13225-21grep08:13:432
7975997630,37cyclictest24651-21rt-features10:18:372
7975997627,30cyclictest29687-21ssh09:38:332
7975997625,35cyclictest0-21swapper/212:08:242
7975997624,33cyclictest6235-21users10:38:412
7975997622,47cyclictest0-21swapper/209:43:412
7975997621,34cyclictest0-21swapper/210:26:542
797499764,64cyclictest0-21swapper/107:37:071
7975997526,40cyclictest16444-21sed11:43:212
7975997526,28cyclictest0-21swapper/209:56:492
7975997522,35cyclictest0-21swapper/210:18:042
7975997521,35cyclictest0-21swapper/209:08:402
7975997521,35cyclictest0-21swapper/209:08:402
7975997518,49cyclictest0-21swapper/208:38:312
7973997523,45cyclictest14036-21taskset09:16:390
219499750,5rtkit-daemon0-21swapper/011:45:360
7975997423,43cyclictest527-21diskmemload10:11:552
7975997422,44cyclictest0-21swapper/211:12:172
7973997415,51cyclictest0-21swapper/010:58:200
7975997329,29cyclictest19684-21ssh11:48:182
7975997329,29cyclictest19684-21ssh11:48:182
7975997328,30cyclictest527-21diskmemload10:02:542
7975997326,39cyclictest13904-21ssh09:16:142
7975997322,34cyclictest0-21swapper/208:58:282
7973997318,49cyclictest0-21swapper/011:03:470
7975997221,18cyclictest0-21swapper/211:56:172
7975997217,34cyclictest0-21swapper/211:17:152
7975997217,34cyclictest0-21swapper/211:17:152
7973997220,44cyclictest1227-21runrttasks08:57:540
7973997219,47cyclictest0-21swapper/009:03:360
7973997217,35cyclictest0-21swapper/010:37:030
219499720,6rtkit-daemon0-21swapper/011:53:060
7973997124,38cyclictest5817-21runrttasks11:28:170
7973997116,47cyclictest0-21swapper/012:11:070
7973997114,50cyclictest0-21swapper/009:36:590
7975997029,33cyclictest12736-21munin-run07:08:152
7975997017,32cyclictest0-21swapper/208:43:352
7973997018,45cyclictest3287-21sed11:23:240
7973997017,46cyclictest0-21swapper/009:58:330
7973997016,37cyclictest0-21swapper/009:42:000
7973997014,50cyclictest0-21swapper/009:20:380
7975996926,28cyclictest8726-21df06:58:292
7975996926,28cyclictest8726-21df06:58:292
7975996923,30cyclictest0-21swapper/207:33:392
7975996920,30cyclictest0-21swapper/208:03:312
7973996913,36cyclictest0-21swapper/011:22:570
7973996910,53cyclictest0-21swapper/010:49:080
7973996910,53cyclictest0-21swapper/010:45:030
7975996830,16cyclictest14488-21cstates08:18:242
7973996826,35cyclictest1227-21runrttasks09:48:490
7973996820,40cyclictest0-21swapper/009:32:330
7973996819,41cyclictest0-21swapper/008:43:120
7973996815,47cyclictest0-21swapper/012:18:580
7973996814,47cyclictest0-21swapper/008:33:380
7973996812,49cyclictest0-21swapper/009:53:340
7973996810,52cyclictest0-21swapper/011:08:470
7973996810,52cyclictest0-21swapper/010:31:330
797399678,53cyclictest0-21swapper/009:27:310
7973996721,39cyclictest1227-21runrttasks12:27:540
7973996718,42cyclictest0-21swapper/010:53:180
7973996718,31cyclictest27610-21sshd11:58:380
7973996717,43cyclictest0-21swapper/011:48:210
7973996717,43cyclictest0-21swapper/011:48:210
7973996717,42cyclictest0-21swapper/011:38:150
7973996717,31cyclictest7854-21ssh09:08:210
7973996717,31cyclictest7854-21ssh09:08:210
7973996716,45cyclictest0-21swapper/010:18:150
7975996630,29cyclictest19251-21grep08:28:242
7975996620,38cyclictest0-21swapper/207:53:442
797399669,41cyclictest0-21swapper/010:24:470
797399668,52cyclictest0-21swapper/010:07:080
7973996618,41cyclictest1124-21snmpd07:22:180
7973996610,50cyclictest0-21swapper/012:03:200
7975996522,29cyclictest0-21swapper/208:23:342
7975996522,29cyclictest0-21swapper/208:23:342
7975996519,38cyclictest0-21swapper/207:18:412
7975996516,31cyclictest0-21swapper/208:08:252
7973996517,32cyclictest0-21swapper/009:43:110
7973996515,41cyclictest0-21swapper/011:35:120
7973996514,44cyclictest27062-21munin-run07:38:130
7973996514,44cyclictest0-21swapper/010:14:480
7973996514,44cyclictest0-21swapper/009:00:530
7973996512,44cyclictest0-21swapper/008:43:380
7975996431,26cyclictest29035-21unixbench_singl07:38:462
7975996417,40cyclictest0-21swapper/207:08:362
7975996413,44cyclictest0-21swapper/207:48:142
7975996413,44cyclictest0-21swapper/207:48:142
7973996414,43cyclictest0-21swapper/007:54:160
7973996411,47cyclictest0-21swapper/012:15:230
7975996335,21cyclictest20940-21grep07:23:332
7975996332,24cyclictest29237-21grep08:48:292
7975996320,14cyclictest0-21swapper/208:53:352
7973996315,42cyclictest0-21swapper/011:13:170
7973996315,42cyclictest0-21swapper/011:13:170
7973996314,43cyclictest0-21swapper/008:03:250
7973996310,47cyclictest0-21swapper/008:27:290
7973996310,47cyclictest0-21swapper/008:27:290
7975996233,22cyclictest23712-21tr07:28:372
7975996221,36cyclictest0-21swapper/207:52:192
7973996216,39cyclictest0-21swapper/007:59:310
7973996215,32cyclictest23593-21latency07:28:360
7973996213,41cyclictest0-21swapper/007:51:540
296842629,45sleep30-21swapper/308:48:373
7976996142,12cyclictest1227-21runrttasks09:23:243
7975996122,20cyclictest0-21swapper/207:13:482
7973996118,36cyclictest17503-21latency_hist07:18:150
7975996018,27cyclictest0-21swapper/207:58:282
7973996039,14cyclictest0-21swapper/007:03:310
7973996016,26cyclictest0-21swapper/008:28:340
7973996013,40cyclictest0-21swapper/007:38:240
7973995916,36cyclictest0-21swapper/007:23:310
219499580,5rtkit-daemon2193-21rtkit-daemon10:13:173
797699576,31cyclictest13491-21ssh10:03:203
7976995737,12cyclictest4886-21cpuspeed_turbos07:58:263
7973995733,8cyclictest15557-21python08:18:410
7973995716,15cyclictest0-21swapper/007:08:480
7973995711,28cyclictest0-21swapper/008:08:330
219499570,5rtkit-daemon0-21swapper/209:15:273
110842573,47sleep39690-21munin-node09:58:353
797699564,27cyclictest0-21swapper/310:23:223
797699563,37cyclictest0-21swapper/309:47:163
797399569,40cyclictest0-21swapper/008:48:220
7973995618,19cyclictest0-21swapper/006:58:470
7973995618,19cyclictest0-21swapper/006:58:470
797699554,33cyclictest0-21swapper/312:03:303
797699554,27cyclictest17141-21fschecks_count10:08:243
797699553,44cyclictest0-21swapper/311:06:323
797699553,35cyclictest0-21swapper/309:28:403
7976995527,20cyclictest1401-21unixbench_singl07:48:473
797399559,20cyclictest0-21swapper/006:58:160
7973995533,16cyclictest0-21swapper/008:18:120
219499550,5rtkit-daemon2193-21rtkit-daemon06:53:333
797699544,34cyclictest0-21swapper/310:42:453
797699544,33cyclictest0-21swapper/310:21:503
797699544,30cyclictest0-21swapper/310:49:493
7976995437,10cyclictest24530-21gltestperf08:38:293
7976995436,11cyclictest23421-21crond08:38:113
7976995418,21cyclictest6334-21munin-node09:53:223
797699534,32cyclictest0-21swapper/310:59:103
7976995316,23cyclictest0-21swapper/312:15:323
7976995314,22cyclictest0-21swapper/310:57:453
7975995319,26cyclictest0-21swapper/206:58:152
797699527,27cyclictest0-21swapper/311:14:123
797699527,27cyclictest0-21swapper/311:14:123
797699524,30cyclictest0-21swapper/311:38:293
797699524,28cyclictest0-21swapper/311:48:043
797699524,28cyclictest0-21swapper/308:58:223
797699524,28cyclictest0-21swapper/307:13:343
797699524,14cyclictest0-21swapper/309:21:543
797699523,21cyclictest0-21swapper/311:18:193
797699515,13cyclictest0-21swapper/312:09:003
797699514,29cyclictest0-21swapper/309:33:403
797699514,28cyclictest0-21swapper/311:28:173
797699514,28cyclictest0-21swapper/311:08:343
797699514,28cyclictest0-21swapper/308:53:223
797699514,28cyclictest0-21swapper/308:48:113
797699514,26cyclictest0-21swapper/311:55:293
797699514,12cyclictest0-21swapper/307:32:203
797699513,30cyclictest0-21swapper/311:33:183
7976995121,12cyclictest0-21swapper/310:28:373
7976995118,13cyclictest0-21swapper/307:13:153
287552513,40sleep30-21swapper/312:01:513
797699504,29cyclictest0-21swapper/312:25:053
797699504,29cyclictest0-21swapper/309:48:323
797699504,28cyclictest0-21swapper/307:53:483
797699504,28cyclictest0-21swapper/307:43:283
797699504,28cyclictest0-21swapper/307:43:283
797699504,28cyclictest0-21swapper/307:33:353
797699504,27cyclictest0-21swapper/309:10:573
797699504,27cyclictest0-21swapper/309:10:573
7976995032,11cyclictest1847-21wc10:33:283
7976995019,13cyclictest0-21swapper/311:49:323
7976995019,13cyclictest0-21swapper/311:49:323
7976995017,14cyclictest0-21swapper/311:23:183
105722503,10sleep30-21swapper/307:03:243
797699494,38cyclictest0-21swapper/312:18:293
797699494,27cyclictest0-21swapper/310:46:173
797699494,27cyclictest0-21swapper/308:08:393
797699494,26cyclictest0-21swapper/308:08:133
797699494,12cyclictest0-21swapper/309:07:563
797699484,27cyclictest0-21swapper/307:18:403
797699483,27cyclictest17706-21needreboot08:23:383
797699483,27cyclictest17706-21needreboot08:23:383
797699483,27cyclictest0-21swapper/308:28:343
797699474,26cyclictest0-21swapper/307:27:193
7976994717,10cyclictest12613-21smartctl08:13:313
797699464,35cyclictest0-21swapper/307:38:423
161502463,37sleep30-21swapper/308:21:483
797699444,24cyclictest0-21swapper/306:58:263
797699444,24cyclictest0-21swapper/306:58:263
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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