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2026-08-22 - 17:04

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 Sat Aug 22, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
321659910837,12cyclictest0-21swapper/109:09:311
321659910337,9cyclictest20290-21gltestperf08:29:511
321659910235,9cyclictest24992-21df_abs11:04:421
32165999936,9cyclictest11543-21munin-node09:04:591
3216199994,32cyclictest0-21swapper/010:09:410
32161999937,9cyclictest19245-21netstat10:54:520
32161999933,20cyclictest0-21swapper/010:16:270
3216199993,47cyclictest0-21swapper/008:19:570
32165999736,12cyclictest0-21swapper/109:14:541
32165999736,12cyclictest0-21swapper/109:14:541
3216199975,48cyclictest0-21swapper/007:05:080
32161999735,12cyclictest0-21swapper/008:24:490
32161999734,12cyclictest0-21swapper/009:09:500
32165999534,12cyclictest0-21swapper/109:54:441
32165999534,12cyclictest0-21swapper/109:54:441
32165999533,11cyclictest0-21swapper/109:04:251
32161999532,10cyclictest25177-21users09:25:060
3216199953,48cyclictest0-21swapper/009:30:530
3216199944,46cyclictest0-21swapper/011:18:530
32161999438,12cyclictest0-21swapper/009:40:480
32161999437,12cyclictest0-21swapper/009:44:490
32161999436,12cyclictest0-21swapper/007:54:490
3216199943,46cyclictest0-21swapper/010:45:100
32161999334,11cyclictest0-21swapper/011:04:020
3216199933,45cyclictest12192-21ssh08:18:060
32167999234,10cyclictest16429-21tail07:29:543
32161999233,11cyclictest0-21swapper/009:53:230
32167999121,14cyclictest0-21swapper/309:25:053
32165999134,12cyclictest0-21swapper/109:29:431
32165999133,12cyclictest0-21swapper/109:49:501
32165999133,12cyclictest0-21swapper/109:20:431
32165999034,10cyclictest12126-21cut10:44:451
32165999034,10cyclictest0-21swapper/108:24:591
32165998934,10cyclictest0-21swapper/108:41:121
3216799883,47cyclictest0-21swapper/308:31:213
32165998833,11cyclictest0-21swapper/107:57:101
32161998834,11cyclictest0-21swapper/008:31:210
32161998833,12cyclictest0-21swapper/009:59:530
32161998833,12cyclictest0-21swapper/009:34:570
32161998833,11cyclictest0-21swapper/011:10:170
32165998733,12cyclictest0-21swapper/109:42:551
32165998732,11cyclictest0-21swapper/110:12:021
32161998734,11cyclictest0-21swapper/010:36:110
32161998734,11cyclictest0-21swapper/010:36:110
248302870,3sleep2281ktimersoftd/206:39:552
3216199864,44cyclictest16911-21cpu09:14:430
3216199864,44cyclictest16911-21cpu09:14:430
32161998625,19cyclictest0-21swapper/008:44:540
32165998534,11cyclictest0-21swapper/110:20:251
32161998532,8cyclictest24924-21cstates11:04:410
32165998432,11cyclictest0-21swapper/108:47:291
3216599842,47cyclictest0-21swapper/108:09:541
32161998434,11cyclictest0-21swapper/008:02:290
32161998431,12cyclictest0-21swapper/010:08:260
32167998322,13cyclictest0-21swapper/310:59:263
32165998333,11cyclictest0-21swapper/108:01:211
3216599833,45cyclictest0-21swapper/107:50:151
32161998331,12cyclictest0-21swapper/010:19:520
32165998133,11cyclictest0-21swapper/110:00:461
32165998133,10cyclictest0-21swapper/110:55:071
32165998131,11cyclictest0-21swapper/107:10:081
32165997933,11cyclictest0-21swapper/108:53:591
32165997933,10cyclictest0-21swapper/106:50:031
32167997829,10cyclictest7294-21iostat_ios08:09:563
32167997718,10cyclictest8041-21aten_r1power_cu10:39:383
32165996641,9cyclictest7132-21runrttasks10:36:591
32165996641,9cyclictest7132-21runrttasks10:36:591
32165996638,13cyclictest0-21swapper/110:59:371
32165996434,13cyclictest0-21swapper/110:31:191
321502642,13sleep20-21swapper/211:14:482
56482636,12sleep20-21swapper/208:08:292
32165996235,12cyclictest0-21swapper/111:09:531
3216199624,52cyclictest0-21swapper/008:39:550
32161996235,12cyclictest0-21swapper/009:19:460
262232623,12sleep20-21swapper/211:05:012
3216799613,51cyclictest0-21swapper/309:34:303
32165996136,11cyclictest0-21swapper/109:39:241
32165996135,12cyclictest0-21swapper/109:48:271
32161996138,8cyclictest6624-21sh08:59:300
32165996034,12cyclictest0-21swapper/108:54:481
32161996037,11cyclictest0-21swapper/005:50:030
32161996037,11cyclictest0-21swapper/005:50:030
239252603,12sleep20-21swapper/211:03:072
3216799595,47cyclictest0-21swapper/309:54:473
3216799595,47cyclictest0-21swapper/309:54:473
32167995929,25cyclictest24832-21sort10:14:483
3216199595,47cyclictest0-21swapper/010:49:400
32161995938,9cyclictest0-21swapper/008:12:010
32161995935,11cyclictest0-21swapper/010:39:550
3216199593,50cyclictest0-21swapper/006:49:510
30892597,45sleep00-21swapper/008:53:390
3216699584,47cyclictest0-21swapper/208:13:342
32165995836,11cyclictest0-21swapper/106:09:371
32165995834,12cyclictest0-21swapper/107:29:351
32165995833,12cyclictest0-21swapper/110:15:071
32165995829,12cyclictest0-21swapper/105:55:111
32161995835,9cyclictest3627-21yum-updatesd-he10:31:240
32161995835,11cyclictest0-21swapper/008:05:500
32161995835,11cyclictest0-21swapper/006:45:010
219499580,4rtkit-daemon2193-21rtkit-daemon09:29:202
32166995742,10cyclictest17993-21strings09:14:562
32166995742,10cyclictest17993-21strings09:14:562
32165995737,8cyclictest1728-21idleruntime-cro11:19:251
32165995735,11cyclictest0-21swapper/108:24:131
32165995734,11cyclictest0-21swapper/110:26:201
32165995734,11cyclictest0-21swapper/110:06:581
32165995733,12cyclictest0-21swapper/109:28:441
32165995733,12cyclictest0-21swapper/108:16:171
32165995732,12cyclictest0-21swapper/108:05:081
32165995725,12cyclictest0-21swapper/106:59:471
32161995736,10cyclictest0-21swapper/009:02:160
32161995735,11cyclictest0-21swapper/009:55:080
32161995735,11cyclictest0-21swapper/009:55:080
32161995734,11cyclictest0-21swapper/010:28:390
32161995733,12cyclictest0-21swapper/009:07:190
32161995733,12cyclictest0-21swapper/006:35:030
219499570,6rtkit-daemon2193-21rtkit-daemon10:54:392
32165995633,11cyclictest0-21swapper/110:54:241
32165995630,12cyclictest0-21swapper/107:40:081
32161995634,10cyclictest0-21swapper/007:52:190
32161995631,12cyclictest0-21swapper/008:35:040
32161995631,12cyclictest0-21swapper/008:35:040
199792563,13sleep20-21swapper/207:38:062
32167995526,11cyclictest20333-21munin-node07:39:463
32166995517,27cyclictest0-21swapper/210:44:112
3216599555,44cyclictest0-21swapper/106:09:491
32165995531,12cyclictest0-21swapper/106:19:501
3216599553,47cyclictest0-21swapper/108:36:561
3216599553,47cyclictest0-21swapper/108:36:561
3216599553,46cyclictest0-21swapper/110:43:101
32161995532,11cyclictest0-21swapper/007:30:010
32161995531,11cyclictest0-21swapper/006:29:470
3216199553,47cyclictest0-21swapper/005:59:540
292682553,13sleep20-21swapper/208:44:382
219499550,5rtkit-daemon2193-21rtkit-daemon08:40:002
219499550,5rtkit-daemon2193-21rtkit-daemon07:45:092
32167995430,8cyclictest1194-21ssh08:00:083
3216699543,39cyclictest0-21swapper/209:24:172
32166995422,23cyclictest5053-21rt-features08:55:002
32165995431,11cyclictest0-21swapper/106:39:491
32161995430,12cyclictest0-21swapper/006:13:280
32161995429,13cyclictest0-21swapper/006:15:050
32161995429,12cyclictest0-21swapper/006:43:330
3216199542,46cyclictest0-21swapper/007:10:290
219499540,6rtkit-daemon2193-21rtkit-daemon09:48:572
219499540,5rtkit-daemon2193-21rtkit-daemon06:45:122
183882543,44sleep20-21swapper/210:04:532
129832543,12sleep20-21swapper/209:56:262
129832543,12sleep20-21swapper/209:56:262
32167995329,9cyclictest28263-21ssh08:41:343
32167995326,13cyclictest0-21swapper/307:05:563
3216599534,44cyclictest0-21swapper/106:36:251
32165995332,9cyclictest1227-21runrttasks06:14:511
32165995331,9cyclictest24901-21munin-run07:49:331
32165995330,8cyclictest20165-21if_eth006:29:571
32165995330,11cyclictest0-21swapper/107:19:461
32165995329,12cyclictest0-21swapper/107:30:081
32165995323,13cyclictest0-21swapper/106:24:481
3216599532,44cyclictest31158-21telnet06:54:461
32161995330,11cyclictest0-21swapper/007:00:030
32161995329,12cyclictest0-21swapper/005:54:560
32161995329,11cyclictest10818-21aten2.4-expect07:19:460
222902535,42sleep00-21swapper/007:41:500
219499530,5rtkit-daemon2193-21rtkit-daemon10:29:483
219499530,5rtkit-daemon2193-21rtkit-daemon10:20:262
219499530,5rtkit-daemon2193-21rtkit-daemon10:17:112
219499530,5rtkit-daemon2193-21rtkit-daemon09:29:502
219499530,5rtkit-daemon2193-21rtkit-daemon09:13:132
219499530,5rtkit-daemon2193-21rtkit-daemon08:46:373
219499530,5rtkit-daemon2193-21rtkit-daemon08:20:302
219499530,5rtkit-daemon2193-21rtkit-daemon07:20:033
219499530,5rtkit-daemon2193-21rtkit-daemon06:59:562
219499530,5rtkit-daemon2193-21rtkit-daemon06:29:502
164162534,9sleep20-21swapper/210:01:592
140662533,44sleep014115-21idleruntime07:24:530
85202524,40sleep30-21swapper/309:49:503
5212523,11sleep20-21swapper/206:55:412
32167995233,7cyclictest24894-21diskmemload11:16:583
3216799523,43cyclictest0-21swapper/310:49:373
3216799523,42cyclictest24894-21diskmemload07:50:213
32167995225,12cyclictest0-21swapper/309:44:403
32166995236,10cyclictest4192-21tail05:55:112
32166995219,25cyclictest31164-21fschecks_time10:24:452
32165995228,12cyclictest0-21swapper/106:03:261
32161995231,9cyclictest31254-21aten2.4-expect06:54:470
32161995230,10cyclictest0-21swapper/006:04:490
3216199523,44cyclictest0-21swapper/007:44:510
3216199522,44cyclictest0-21swapper/007:14:580
3216199522,44cyclictest0-21swapper/007:14:580
219499520,5rtkit-daemon2193-21rtkit-daemon10:09:562
219499520,5rtkit-daemon2193-21rtkit-daemon09:51:342
219499520,5rtkit-daemon2193-21rtkit-daemon09:01:513
143732522,43sleep30-21swapper/310:49:253
32167995135,10cyclictest26377-21head11:05:023
32167995121,14cyclictest0-21swapper/309:14:313
32167995117,11cyclictest21316-21aten_r1power_fr10:59:383
3216699514,40cyclictest0-21swapper/210:46:012
32166995138,7cyclictest1683-21unixbench_multi05:50:102
32166995138,7cyclictest1683-21unixbench_multi05:50:102
32166995134,10cyclictest3669-21rm10:31:202
32166995132,12cyclictest28587-21grep11:09:442
32166995132,11cyclictest10521-21gltestperf06:09:572
32166995121,22cyclictest0-21swapper/208:30:472
32166995118,24cyclictest8565-21timerwakeupswit09:00:032
3216599514,42cyclictest32381-21munin-node05:50:121
3216599514,42cyclictest32381-21munin-node05:50:121
219499510,5rtkit-daemon2193-21rtkit-daemon09:34:433
219499510,5rtkit-daemon2193-21rtkit-daemon08:17:312
219499510,5rtkit-daemon2193-21rtkit-daemon07:39:552
219499510,5rtkit-daemon2193-21rtkit-daemon07:19:183
219499510,5rtkit-daemon2193-21rtkit-daemon07:19:183
200762519,36sleep00-21swapper/007:39:210
141712513,9sleep20-21swapper/206:19:332
92072503,14sleep20-21swapper/206:07:032
3216799504,14cyclictest0-21swapper/311:14:113
3216799503,41cyclictest2992-21aten_r1power_po08:04:463
32167995022,13cyclictest0-21swapper/306:04:543
32167995021,9cyclictest14726-21cpuspeed_turbos06:19:523
32167995021,13cyclictest0-21swapper/308:26:043
32167995019,13cyclictest0-21swapper/310:34:393
32167995019,13cyclictest0-21swapper/310:34:393
32167995019,12cyclictest0-21swapper/310:25:143
3216699505,15cyclictest0-21swapper/207:31:192
32166995035,8cyclictest25475-21cpuspeed_turbos07:49:472
32161995030,11cyclictest0-21swapper/006:20:050
32161995028,10cyclictest0-21swapper/006:24:530
296592503,40sleep20-21swapper/206:49:562
25002503,41sleep30-21swapper/308:51:243
228902502,42sleep30-21swapper/310:11:393
219499500,5rtkit-daemon2193-21rtkit-daemon08:35:072
219499500,5rtkit-daemon2193-21rtkit-daemon08:35:072
38982492,9sleep20-21swapper/209:44:252
3216799493,40cyclictest0-21swapper/310:02:373
3216799493,39cyclictest23146-21df08:34:473
3216799493,39cyclictest23146-21df08:34:473
3216799493,39cyclictest21992-21ssh09:20:263
32167994929,7cyclictest24894-21diskmemload10:06:413
32167994921,11cyclictest0-21swapper/306:44:593
32167994920,9cyclictest30129-21timerwakeupswit07:55:063
32167994919,14cyclictest0-21swapper/309:18:313
32167994919,14cyclictest0-21swapper/309:18:313
32167994918,12cyclictest0-21swapper/309:04:533
3216699494,28cyclictest0-21swapper/207:56:512
32166994933,9cyclictest551-21uname07:59:592
32166994931,11cyclictest11103-21tr07:19:482
32166994910,28cyclictest0-21swapper/208:29:322
236022493,12sleep20-21swapper/206:38:072
219499490,5rtkit-daemon2193-21rtkit-daemon10:51:552
219499490,4rtkit-daemon2193-21rtkit-daemon07:29:323
219499490,12rtkit-daemon2193-21rtkit-daemon06:03:432
3216799484,28cyclictest0-21swapper/306:29:483
32167994822,9cyclictest18219-21munin-node07:34:483
32167994822,8cyclictest361ktimersoftd/306:25:023
32167994822,12cyclictest24978-21iostat06:39:583
32167994821,12cyclictest0-21swapper/310:21:563
32167994821,10cyclictest0-21swapper/305:54:553
32166994835,8cyclictest7781-21unixbench_singl07:10:082
32166994823,14cyclictest0-21swapper/206:20:082
32166994811,27cyclictest0-21swapper/210:34:512
32166994811,27cyclictest0-21swapper/210:34:512
3216599484,39cyclictest0-21swapper/107:35:011
3216599483,40cyclictest0-21swapper/107:15:051
3216599483,40cyclictest0-21swapper/107:15:051
30252483,10sleep20-21swapper/208:53:252
3216799475,37cyclictest0-21swapper/308:14:563
32167994727,7cyclictest24894-21diskmemload08:54:453
32167994725,9cyclictest15454-21ssh08:23:003
32167994721,8cyclictest361ktimersoftd/306:15:073
32167994718,13cyclictest0-21swapper/309:40:243
32167994717,12cyclictest0-21swapper/307:10:003
3216699474,36cyclictest0-21swapper/209:05:062
32166994730,11cyclictest4470-21gltestperf07:04:562
32166994721,14cyclictest0-21swapper/209:35:562
3216599473,40cyclictest0-21swapper/106:44:581
3216599473,16cyclictest0-21swapper/107:04:531
227642473,38sleep30-21swapper/306:35:023
32167994625,9cyclictest1124-21snmpd06:53:393
32167994625,7cyclictest25105-21cat07:49:343
32167994615,13cyclictest0-21swapper/305:59:543
32166994624,12cyclictest1-21systemd07:29:342
32167994522,9cyclictest31257-21telnet06:54:473
32167994521,11cyclictest9649-21munin-node06:10:013
32167994511,29cyclictest413-21df_abs05:49:523
32167994511,29cyclictest413-21df_abs05:49:523
3216699454,34cyclictest0-21swapper/207:14:532
3216699454,34cyclictest0-21swapper/207:14:532
321202453,37sleep00-21swapper/005:49:310
3216699444,34cyclictest0-21swapper/205:49:382
3216799433,34cyclictest1843-21perl06:59:533
3216699434,30cyclictest0-21swapper/206:25:052
32165993922,12cyclictest0-21swapper/105:49:381
3216799383,29cyclictest0-21swapper/305:49:393
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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