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2026-06-24 - 17:28

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 the highest latencies:
System rack1slot6s.osadl.org (updated Wed Jun 24, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2376399984,11cyclictest0-21swapper/208:58:222
2376399984,11cyclictest0-21swapper/208:58:222
219499980,8rtkit-daemon0-21swapper/106:45:251
219499980,8rtkit-daemon0-21swapper/106:45:251
219499970,4rtkit-daemon18114-21ssh10:20:243
219499940,7rtkit-daemon0-21swapper/107:00:321
219499930,7rtkit-daemon0-21swapper/109:51:261
219499930,6rtkit-daemon0-21swapper/309:05:123
22512800,4sleep03-21ksoftirqd/011:33:510
23761997326,26cyclictest7137-21gltestperf11:40:151
23761997217,47cyclictest0-21swapper/110:35:281
23761997125,28cyclictest8701-21cpuspeed_turbos07:20:171
23761997112,53cyclictest0-21swapper/109:20:121
23761997028,35cyclictest16074-21awk11:54:541
23761997023,41cyclictest19427-21fschecks_time09:35:171
23761997023,41cyclictest19427-21fschecks_time09:35:171
23761997017,21cyclictest0-21swapper/108:55:211
23761997017,21cyclictest0-21swapper/108:55:211
2376599694,29cyclictest0-21swapper/308:20:203
23765996925,26cyclictest0-21swapper/310:25:433
23765996925,26cyclictest0-21swapper/310:25:433
23761996924,28cyclictest10597-21df_abs10:10:131
23761996917,45cyclictest1124-21snmpd11:33:481
23761996917,45cyclictest0-21swapper/109:18:181
23761996819,32cyclictest1227-21runrttasks09:01:231
23761996816,46cyclictest0-21swapper/111:07:281
23761996816,46cyclictest0-21swapper/111:07:281
23761996713,31cyclictest0-21swapper/110:30:231
23761996625,33cyclictest13385-21sendmail_mailst09:25:291
23761996624,36cyclictest5041-21cpuspeed_turbos10:50:101
23761996622,19cyclictest2269-21gltestperf10:45:151
23761996619,41cyclictest12107-21munin-node11:00:121
23761996619,41cyclictest12107-21munin-node11:00:121
23761996619,39cyclictest0-21swapper/110:40:001
23761996617,42cyclictest0-21swapper/108:47:451
23761996616,43cyclictest0-21swapper/110:22:271
215792665,16sleep021637-21aten2.4-expect06:40:160
23761996525,19cyclictest3187-21cpuspeed_turbos11:35:091
23761996520,37cyclictest18574-21cut11:10:091
23761996517,41cyclictest0-21swapper/111:59:021
23761996516,40cyclictest4836-21aten_r1power_en08:20:131
23761996514,44cyclictest0-21swapper/108:30:251
219499650,5rtkit-daemon2193-21rtkit-daemon11:26:073
298572644,12sleep00-21swapper/009:50:200
23765996419,24cyclictest8624-21df_abs10:55:113
23761996424,34cyclictest6246-21runrttasks10:04:281
23761996419,39cyclictest23456-21rm09:40:281
23761996419,39cyclictest1511-21unixbench-2d09:55:331
23761996419,39cyclictest0-21swapper/107:05:311
23761996419,38cyclictest26329-21ntp_states11:20:221
23761996419,27cyclictest3173-21fschecks_time08:15:201
23761996419,27cyclictest3173-21fschecks_time08:15:201
23761996416,43cyclictest0-21swapper/110:19:271
23761996416,30cyclictest0-21swapper/109:47:271
23761996415,33cyclictest0-21swapper/111:25:461
23761996415,33cyclictest0-21swapper/110:27:401
23761996415,33cyclictest0-21swapper/110:27:401
23761996414,43cyclictest0-21swapper/112:12:041
23761996413,45cyclictest0-21swapper/111:45:571
23761996411,47cyclictest0-21swapper/110:09:361
23763996324,24cyclictest0-21swapper/211:35:102
2376199639,47cyclictest0-21swapper/107:15:371
23761996318,37cyclictest21123-21wc12:00:221
23761996317,39cyclictest0-21swapper/111:16:171
23761996316,40cyclictest0-21swapper/108:35:261
23761996315,31cyclictest15276-21munin-node09:30:161
23761996313,29cyclictest0-21swapper/110:55:301
2376399623,33cyclictest9967-21unixbench_singl10:55:302
23761996222,33cyclictest3517-21ssh09:10:341
23761996220,26cyclictest20805-21fschecks_time08:50:191
23761996214,27cyclictest17202-21cat07:35:371
313532613,51sleep20-21swapper/211:29:312
2376599615,26cyclictest1227-21runrttasks08:50:533
23761996121,34cyclictest25484-21cpuspeed_turbos07:55:161
23761996114,30cyclictest0-21swapper/109:05:131
23761996111,44cyclictest0-21swapper/112:08:441
219499610,4rtkit-daemon2193-21rtkit-daemon10:36:013
2376599605,37cyclictest0-21swapper/309:28:103
2376599603,37cyclictest0-21swapper/309:44:193
23765996014,26cyclictest0-21swapper/311:45:293
23761996027,14cyclictest991-21missed_timers08:10:281
23761996027,14cyclictest991-21missed_timers08:10:281
23761996018,14cyclictest15001-21runrttasks07:30:541
23761996018,14cyclictest15001-21runrttasks07:30:541
23761996016,38cyclictest3812-21cpu07:10:181
2376599594,29cyclictest27946-21ssh11:24:233
23765995923,14cyclictest0-21swapper/310:10:093
23765995923,12cyclictest0-21swapper/307:30:233
23765995923,12cyclictest0-21swapper/307:30:233
23765995922,13cyclictest24599-21irqstats10:30:183
23765995914,26cyclictest0-21swapper/311:38:413
2375699594,13cyclictest0-21swapper/010:45:170
242622583,8sleep324375-21cat07:50:353
2376599585,29cyclictest0-21swapper/311:19:243
2376599585,26cyclictest8520-21munin-node09:20:133
2376599585,25cyclictest0-21swapper/308:46:103
2376599584,37cyclictest0-21swapper/309:02:583
2376599584,29cyclictest0-21swapper/308:00:023
2376599584,28cyclictest0-21swapper/307:20:393
23765995821,13cyclictest0-21swapper/310:05:353
23765995821,13cyclictest0-21swapper/309:45:253
23765995816,35cyclictest31666-21proc_pri10:40:253
23761995818,15cyclictest0-21swapper/108:40:161
23761995810,32cyclictest0-21swapper/106:55:051
2375699583,45cyclictest0-21swapper/011:10:170
177932583,48sleep217890-21load08:45:242
112902587,43sleep20-21swapper/207:25:192
322872573,46sleep00-21swapper/009:55:120
320382573,8sleep032106-21grep10:40:310
2376599576,30cyclictest0-21swapper/307:10:223
2376599575,35cyclictest0-21swapper/310:04:243
2376599575,30cyclictest0-21swapper/312:05:133
2376599575,29cyclictest0-21swapper/306:55:293
2376599575,28cyclictest0-21swapper/307:35:353
2376599574,36cyclictest0-21swapper/308:59:093
2376599574,36cyclictest0-21swapper/308:59:093
2376599574,31cyclictest0-21swapper/311:01:393
2376599574,31cyclictest0-21swapper/311:01:393
2376599574,30cyclictest0-21swapper/309:35:203
2376599574,30cyclictest0-21swapper/309:35:203
2376599574,28cyclictest0-21swapper/311:30:163
2376599574,28cyclictest0-21swapper/309:50:193
2376599573,34cyclictest0-21swapper/311:42:373
23765995712,22cyclictest0-21swapper/311:50:143
23761995715,25cyclictest23307-21df_inode07:50:191
2376599566,27cyclictest0-21swapper/311:55:263
2376599565,28cyclictest0-21swapper/306:45:323
2376599565,28cyclictest0-21swapper/306:45:323
2376599564,33cyclictest0-21swapper/309:15:153
2376599564,28cyclictest0-21swapper/310:15:333
2376599563,33cyclictest0-21swapper/309:13:513
2376399564,45cyclictest0-21swapper/210:00:192
2376399563,45cyclictest0-21swapper/210:40:152
23761995617,12cyclictest29076-21tr06:55:181
23761995611,39cyclictest0-21swapper/108:25:291
2375699564,45cyclictest0-21swapper/009:10:000
2375699564,44cyclictest0-21swapper/009:25:110
19042568,7sleep20-21swapper/211:33:012
79602550,5sleep226-21rcuc/208:25:202
72522552,45sleep00-21swapper/010:05:160
54332553,9sleep00-21swapper/011:38:030
2376599555,27cyclictest0-21swapper/307:25:233
2376599554,43cyclictest0-21swapper/309:30:163
23763995525,14cyclictest0-21swapper/210:30:152
23763995518,19cyclictest6857-21uniq11:40:132
23761995519,11cyclictest12933-21runrttasks07:30:001
219499550,5rtkit-daemon2193-21rtkit-daemon07:10:322
201582553,8sleep320162-21ssh11:10:373
129982553,44sleep00-21swapper/011:00:260
129982553,44sleep00-21swapper/011:00:260
3972543,44sleep2509-21fschecks_time08:10:212
3972543,44sleep2509-21fschecks_time08:10:212
243502545,8sleep20-21swapper/206:45:212
243502545,8sleep20-21swapper/206:45:212
2376599545,31cyclictest0-21swapper/312:12:103
2376599545,27cyclictest0-21swapper/310:50:143
2376399547,33cyclictest0-21swapper/209:11:372
2376399543,46cyclictest0-21swapper/209:50:282
2376199549,39cyclictest0-21swapper/108:08:291
2376199545,41cyclictest21670-21munin-node07:45:311
23761995417,31cyclictest28889-21processes08:00:331
2375699544,43cyclictest0-21swapper/010:30:190
23756995436,12cyclictest0-21swapper/011:20:180
219499540,5rtkit-daemon2193-21rtkit-daemon07:20:392
21572543,44sleep02346-21ssh09:10:170
2376399534,43cyclictest0-21swapper/210:46:472
2376399534,42cyclictest0-21swapper/211:55:052
2376399533,34cyclictest0-21swapper/210:15:362
2376399533,12cyclictest0-21swapper/209:00:312
23763995316,21cyclictest18890-21cpuspeed09:35:122
23763995316,21cyclictest18890-21cpuspeed09:35:122
23761995325,23cyclictest18791-21tail07:40:241
2375699534,44cyclictest0-21swapper/010:15:300
2375699534,43cyclictest0-21swapper/011:09:030
2375699534,43cyclictest0-21swapper/011:09:030
23756995338,9cyclictest21069-21grep10:25:170
23756995338,9cyclictest21069-21grep10:25:170
23756995337,10cyclictest3190-21gltestperf08:15:200
23756995337,10cyclictest3190-21gltestperf08:15:200
23756995334,12cyclictest0-21swapper/012:10:100
2375699533,9cyclictest0-21swapper/008:30:220
219499530,5rtkit-daemon2193-21rtkit-daemon09:58:253
83722522,10sleep00-21swapper/008:25:270
318542522,44sleep00-21swapper/008:07:330
23765995230,15cyclictest0-21swapper/307:40:243
2376399524,29cyclictest0-21swapper/209:16:272
23763995237,10cyclictest31461-21tail09:05:202
23763995235,10cyclictest29051-21tr06:55:182
2375699524,40cyclictest0-21swapper/011:40:100
2375699524,29cyclictest0-21swapper/009:15:360
2375699524,11cyclictest0-21swapper/012:00:250
23756995234,12cyclictest0-21swapper/010:00:230
2375699523,43cyclictest24318-21runrttasks09:41:560
2375699523,42cyclictest0-21swapper/009:45:040
219499520,4rtkit-daemon2193-21rtkit-daemon10:05:332
313102512,9sleep00-21swapper/011:29:200
2376399515,32cyclictest0-21swapper/211:48:572
2376399514,27cyclictest0-21swapper/209:30:172
2376399514,25cyclictest0-21swapper/207:35:162
23763995133,12cyclictest0-21swapper/209:24:302
23763995132,11cyclictest12305-21tr08:35:142
2376399513,42cyclictest0-21swapper/209:25:322
2376399513,34cyclictest0-21swapper/210:20:002
2376399513,33cyclictest0-21swapper/212:13:522
23763995110,8cyclictest107550irq/46-eth009:40:232
2375699517,38cyclictest15-21rcuc/011:50:130
2375699515,42cyclictest15-21rcuc/009:32:050
2375699514,41cyclictest0-21swapper/010:23:080
23756995133,13cyclictest0-21swapper/008:55:320
23756995133,13cyclictest0-21swapper/008:55:320
2375699513,42cyclictest0-21swapper/010:55:230
223732512,41sleep00-21swapper/007:48:270
219499510,5rtkit-daemon2193-21rtkit-daemon11:14:152
219499510,5rtkit-daemon2193-21rtkit-daemon10:47:163
219499510,5rtkit-daemon2193-21rtkit-daemon08:14:293
219499510,5rtkit-daemon2193-21rtkit-daemon08:14:293
69932503,39sleep20-21swapper/207:15:282
2376599505,28cyclictest0-21swapper/307:45:193
2376599504,23cyclictest31223-21aten2.4-expect07:00:163
2376599504,13cyclictest0-21swapper/311:06:253
2376599504,13cyclictest0-21swapper/311:06:253
23765995031,11cyclictest27050-21uniq06:50:223
23765995020,13cyclictest0-21swapper/308:30:263
23765995020,12cyclictest0-21swapper/308:05:253
2376399504,40cyclictest0-21swapper/210:35:292
2376399504,39cyclictest0-21swapper/209:45:192
2376399504,39cyclictest0-21swapper/208:50:152
2375699509,8cyclictest15-21rcuc/011:17:470
2375699504,40cyclictest0-21swapper/008:50:170
2375699504,39cyclictest41ktimersoftd/007:50:170
23756995033,10cyclictest9928-21grep11:45:070
23756995032,11cyclictest32602-21cpuspeed_turbos08:10:170
23756995032,11cyclictest32602-21cpuspeed_turbos08:10:170
2375699503,42cyclictest0-21swapper/008:20:240
2375699503,41cyclictest0-21swapper/011:58:190
2375699503,10cyclictest27656-21ssh09:00:140
23756995029,14cyclictest0-21swapper/012:05:150
23756995016,14cyclictest0-21swapper/010:50:080
219499500,5rtkit-daemon2193-21rtkit-daemon08:35:143
219499500,4rtkit-daemon2193-21rtkit-daemon08:15:143
219499500,4rtkit-daemon2193-21rtkit-daemon08:15:143
215612502,9sleep00-21swapper/009:39:160
215612502,9sleep00-21swapper/009:39:160
2376599495,28cyclictest0-21swapper/312:00:043
2376599495,27cyclictest0-21swapper/308:00:303
2376599495,27cyclictest0-21swapper/307:05:153
2376399494,39cyclictest0-21swapper/211:20:102
2376399494,26cyclictest0-21swapper/210:12:582
2376399494,24cyclictest0-21swapper/211:15:062
2376399494,12cyclictest0-21swapper/212:02:292
23763994933,10cyclictest26711-21cpuspeed_turbos06:50:182
23756994933,10cyclictest24334-21grep06:45:200
23756994933,10cyclictest24334-21grep06:45:200
2375699493,41cyclictest0-21swapper/008:48:110
2375699493,11cyclictest0-21swapper/009:20:490
152022492,9sleep20-21swapper/207:33:332
152022492,9sleep20-21swapper/207:33:332
103432492,40sleep00-21swapper/007:22:270
265462480,4sleep041ktimersoftd/007:55:310
2376599484,27cyclictest0-21swapper/307:19:083
2376399486,25cyclictest0-21swapper/211:05:152
2376399486,25cyclictest0-21swapper/211:05:152
2376399485,27cyclictest0-21swapper/212:06:362
2376399484,28cyclictest0-21swapper/207:50:342
2376399483,28cyclictest0-21swapper/210:50:262
2376399483,26cyclictest0-21swapper/211:53:502
23763994816,19cyclictest16499-21diskmemload10:28:012
23763994816,19cyclictest16499-21diskmemload10:28:012
23756994833,10cyclictest28045-21cat10:35:210
131852482,38sleep00-21swapper/007:30:130
131852482,38sleep00-21swapper/007:30:130
129102482,40sleep00-21swapper/007:29:440
80922472,38sleep00-21swapper/007:19:080
298902472,9sleep20-21swapper/208:05:052
23765994718,13cyclictest0-21swapper/308:25:133
2376399474,27cyclictest0-21swapper/208:00:312
2376399474,27cyclictest0-21swapper/207:55:132
2376399474,26cyclictest0-21swapper/209:55:262
2376399474,26cyclictest0-21swapper/208:40:342
2376399473,27cyclictest0-21swapper/211:00:262
2376399473,27cyclictest0-21swapper/211:00:262
2376399473,27cyclictest0-21swapper/207:00:262
2375699475,37cyclictest0-21swapper/010:12:160
2375699474,36cyclictest0-21swapper/008:40:000
2375699474,26cyclictest0-21swapper/007:00:310
23756994730,11cyclictest1925-21grep07:05:230
224522472,38sleep20-21swapper/207:49:292
114752472,9sleep20-21swapper/208:32:062
2376599465,25cyclictest0-21swapper/308:40:143
2376399463,27cyclictest0-21swapper/208:15:322
2376399463,27cyclictest0-21swapper/208:15:322
2375699463,35cyclictest0-21swapper/008:40:120
219499460,4rtkit-daemon2193-21rtkit-daemon07:08:392
2376399453,26cyclictest0-21swapper/207:43:382
2375699453,36cyclictest0-21swapper/008:00:360
23763994416,13cyclictest0-21swapper/208:20:202
23761994419,17cyclictest0-21swapper/106:45:061
23756994430,9cyclictest30494-21unixbench_singl06:55:380
179562442,36sleep00-21swapper/007:40:080
236922434,6sleep30-21swapper/306:44:413
2375699425,31cyclictest0-21swapper/006:50:150
2375699424,34cyclictest0-21swapper/007:35:240
2375699414,30cyclictest0-21swapper/007:10:180
23763993716,16cyclictest23742-21latency_hist06:45:062
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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