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2025-12-16 - 21:10

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 Tue Dec 16, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2485991070,6rtkit-daemon0-21swapper/309:24:243
2485991030,7rtkit-daemon0-21swapper/111:32:123
3215399904,23cyclictest0-21swapper/210:06:152
3215399894,26cyclictest0-21swapper/212:11:552
248599880,31rtkit-daemon17944-21munin-node08:52:183
3215399874,28cyclictest0-21swapper/208:02:042
3215399874,26cyclictest0-21swapper/211:46:332
3215399874,26cyclictest0-21swapper/211:06:572
3215399874,26cyclictest0-21swapper/209:01:502
3215399874,25cyclictest0-21swapper/210:56:562
248599870,29rtkit-daemon0-21swapper/211:46:563
3215399865,27cyclictest0-21swapper/208:37:162
3215399864,27cyclictest0-21swapper/208:07:082
3215099864,74cyclictest0-21swapper/011:12:060
3215399854,27cyclictest0-21swapper/211:37:052
3215399854,27cyclictest0-21swapper/211:37:052
3215399853,26cyclictest7145-21telnet11:51:522
248599850,27rtkit-daemon4433-21yum-updatesd-he11:46:263
3215099843,74cyclictest0-21swapper/011:57:110
3215399834,27cyclictest0-21swapper/208:47:032
3215399833,26cyclictest24255-21grep07:57:032
3215099835,47cyclictest0-21swapper/007:06:530
3215099834,72cyclictest0-21swapper/011:07:040
3215399824,28cyclictest0-21swapper/209:22:162
3215399824,24cyclictest0-21swapper/207:17:022
3215099824,71cyclictest6870-21awk11:51:420
3215399814,26cyclictest0-21swapper/210:52:042
32153998123,12cyclictest0-21swapper/211:23:032
32153998115,12cyclictest0-21swapper/211:27:032
3215099814,70cyclictest0-21swapper/011:51:580
248599810,21rtkit-daemon0-21swapper/211:39:573
248599810,21rtkit-daemon0-21swapper/211:39:573
3215399804,29cyclictest0-21swapper/210:07:142
3215399804,29cyclictest0-21swapper/210:07:142
3215399804,13cyclictest0-21swapper/211:21:422
32153998026,10cyclictest1825-21grep08:17:052
32153998020,13cyclictest0-21swapper/208:32:022
32153998018,11cyclictest0-21swapper/208:12:152
3215099804,69cyclictest0-21swapper/010:46:530
3215099804,69cyclictest0-21swapper/010:46:530
3215099804,44cyclictest0-21swapper/010:46:450
3215099803,71cyclictest1419-21runrttasks07:37:000
3215399794,32cyclictest0-21swapper/212:31:462
3215399794,26cyclictest0-21swapper/212:06:592
3215099794,67cyclictest0-21swapper/011:31:550
3215099794,67cyclictest0-21swapper/010:36:440
3215099793,69cyclictest0-21swapper/012:36:410
3215099793,44cyclictest2737-21grep09:26:590
3215099793,44cyclictest2737-21grep09:26:590
3215399784,33cyclictest0-21swapper/212:16:522
3215399784,33cyclictest0-21swapper/212:16:522
3215399783,24cyclictest0-21swapper/211:51:342
32153997816,11cyclictest0-21swapper/209:06:572
3215099784,67cyclictest1419-21runrttasks08:41:260
3215099784,65cyclictest16310-21chrt08:47:050
3215099783,68cyclictest25222-21tail09:06:580
3215099783,68cyclictest2437-21munin-node07:12:110
3215099783,68cyclictest0-21swapper/008:17:150
3215399774,26cyclictest0-21swapper/209:46:342
32153997723,10cyclictest3211-21grep09:27:052
32153997723,10cyclictest3211-21grep09:27:052
3215099774,66cyclictest0-21swapper/007:57:190
3215099774,65cyclictest0-21swapper/010:11:560
3215099773,68cyclictest0-21swapper/009:39:310
3215099773,68cyclictest0-21swapper/009:17:570
3215099773,67cyclictest32367-21munin-node07:07:150
248599770,8rtkit-daemon0-21swapper/009:52:160
3215399764,34cyclictest0-21swapper/210:36:592
3215399764,27cyclictest0-21swapper/212:21:542
3215399764,27cyclictest0-21swapper/208:52:022
3215399764,27cyclictest0-21swapper/208:22:162
3215399764,26cyclictest0-21swapper/207:37:072
3215399764,25cyclictest0-21swapper/207:10:482
3215399764,23cyclictest0-21swapper/209:46:552
3215399764,22cyclictest0-21swapper/208:27:002
3215399763,25cyclictest0-21swapper/209:06:482
32153997619,11cyclictest0-21swapper/207:15:502
3215099764,65cyclictest0-21swapper/009:31:550
3215099764,65cyclictest0-21swapper/009:02:190
3215099764,65cyclictest0-21swapper/007:17:010
3215099763,65cyclictest32208-21munin-node11:36:580
3215099763,65cyclictest32208-21munin-node11:36:580
3215399754,25cyclictest0-21swapper/210:36:202
3215399754,25cyclictest0-21swapper/207:27:012
3215399753,26cyclictest0-21swapper/211:01:552
32153997528,9cyclictest8404-21wc07:22:142
32153997528,9cyclictest8404-21wc07:22:142
32153997519,12cyclictest0-21swapper/210:46:392
32153997519,11cyclictest0-21swapper/207:35:522
3215099756,62cyclictest0-21swapper/010:05:430
3215099754,64cyclictest0-21swapper/012:07:340
3215099754,64cyclictest0-21swapper/007:32:070
3215099753,65cyclictest287391munin-node08:06:580
3215099753,65cyclictest19930-21fschecks_time07:47:070
3215099753,65cyclictest19926-21sh12:16:560
3215099753,65cyclictest19926-21sh12:16:560
3215099753,64cyclictest13886-21seq10:57:000
3215399744,12cyclictest0-21swapper/210:47:102
3215399744,12cyclictest0-21swapper/210:47:102
3215099744,63cyclictest0-21swapper/012:29:220
3215099744,63cyclictest0-21swapper/009:47:110
3215099744,63cyclictest0-21swapper/009:42:050
3215099744,43cyclictest0-21swapper/012:02:120
3215099743,66cyclictest0-21swapper/010:21:560
3215099743,65cyclictest0-21swapper/011:04:090
3215099743,65cyclictest0-21swapper/008:52:020
3215099743,65cyclictest0-21swapper/008:45:560
3215099743,65cyclictest0-21swapper/008:45:560
3215099743,65cyclictest0-21swapper/007:28:430
3215099743,64cyclictest28434-21latency_hist10:21:460
3215099743,64cyclictest21857-21cpuspeed_turbos07:52:020
3215399733,30cyclictest0-21swapper/208:42:352
3215399733,30cyclictest0-21swapper/208:42:352
32153997325,42cyclictest0-21swapper/211:56:582
3215099734,62cyclictest0-21swapper/010:36:540
3215099734,62cyclictest0-21swapper/007:22:020
3215099734,62cyclictest0-21swapper/007:22:020
3215099733,64cyclictest0-21swapper/011:42:070
3215099733,64cyclictest0-21swapper/011:17:090
3215099733,64cyclictest0-21swapper/008:02:000
3215099733,64cyclictest0-21swapper/007:42:280
3215099733,43cyclictest0-21swapper/008:25:590
3215399724,25cyclictest0-21swapper/207:45:542
3215099724,61cyclictest0-21swapper/009:01:300
3215099723,62cyclictest0-21swapper/010:52:040
3215099723,62cyclictest0-21swapper/010:01:470
3215099723,61cyclictest0-21swapper/008:31:590
3215399714,13cyclictest0-21swapper/210:27:042
3215099714,60cyclictest746-21wc09:22:070
3215099714,60cyclictest0-21swapper/012:21:530
3215099714,59cyclictest0-21swapper/008:27:050
3215099713,62cyclictest0-21swapper/011:22:010
3215099713,60cyclictest0-21swapper/009:12:220
3215099712,61cyclictest0-21swapper/008:12:030
3215099703,61cyclictest0-21swapper/010:10:500
3215099703,61cyclictest0-21swapper/010:10:500
3215099703,60cyclictest0-21swapper/010:27:100
3215399694,15cyclictest0-21swapper/211:32:142
3215099693,60cyclictest0-21swapper/011:27:160
32150996925,38cyclictest17511-21grep12:11:590
297612662,10sleep30-21swapper/308:07:113
238332603,12sleep30-21swapper/311:17:073
248599590,6rtkit-daemon0-21swapper/108:42:113
248599590,6rtkit-daemon0-21swapper/108:42:113
248599590,5rtkit-daemon1419-21runrttasks12:03:411
248599560,5rtkit-daemon25406-21timerwakeupswit12:27:101
32154995536,12cyclictest27956-21grep12:32:083
3215499545,29cyclictest0-21swapper/311:21:573
248599540,4rtkit-daemon2484-21rtkit-daemon07:32:141
189232544,42sleep30-21swapper/307:46:393
3215499535,29cyclictest0-21swapper/312:22:063
3215499535,29cyclictest0-21swapper/309:32:223
3215499535,27cyclictest0-21swapper/310:56:523
3215499534,30cyclictest0-21swapper/309:26:583
3215499534,30cyclictest0-21swapper/309:26:583
32154995333,13cyclictest10474-21cut07:27:093
32154995322,11cyclictest1419-21runrttasks10:55:353
32154995320,14cyclictest0-21swapper/308:57:193
3215299535,41cyclictest0-21swapper/109:22:221
3215299533,42cyclictest0-21swapper/110:02:141
196802533,42sleep119812-21perl12:16:551
196802533,42sleep119812-21perl12:16:551
150092532,9sleep10-21swapper/110:58:311
3215499524,29cyclictest0-21swapper/309:07:183
3215499524,29cyclictest0-21swapper/308:32:203
3215499524,28cyclictest0-21swapper/311:56:423
3215499524,27cyclictest0-21swapper/309:41:483
3215499524,13cyclictest0-21swapper/309:21:083
32154995237,9cyclictest24799-21gltestperf07:57:083
32154995220,13cyclictest0-21swapper/311:07:163
3215299525,28cyclictest0-21swapper/111:42:101
3215299525,28cyclictest0-21swapper/111:37:081
3215299525,28cyclictest0-21swapper/111:37:081
248599520,4rtkit-daemon2484-21rtkit-daemon09:52:231
248599520,4rtkit-daemon2484-21rtkit-daemon07:27:291
3215499515,27cyclictest0-21swapper/311:57:103
3215499514,28cyclictest0-21swapper/309:46:553
3215499514,28cyclictest0-21swapper/308:02:163
3215499514,28cyclictest0-21swapper/307:22:093
3215499514,28cyclictest0-21swapper/307:22:093
32154995119,14cyclictest0-21swapper/309:11:583
3215399512,42cyclictest0-21swapper/211:11:552
3215299515,28cyclictest0-21swapper/109:42:041
3215299514,30cyclictest0-21swapper/108:17:011
32152995132,12cyclictest0-21swapper/112:36:411
308762512,42sleep10-21swapper/108:11:441
286592513,41sleep10-21swapper/110:21:511
3215499505,13cyclictest0-21swapper/310:17:043
3215499504,28cyclictest0-21swapper/309:02:193
3215499504,27cyclictest0-21swapper/312:06:413
3215499504,27cyclictest0-21swapper/309:46:483
3215499504,27cyclictest0-21swapper/308:22:213
3215499504,27cyclictest0-21swapper/308:17:153
3215499504,27cyclictest0-21swapper/308:12:133
3215499504,27cyclictest0-21swapper/307:12:023
3215499504,27cyclictest0-21swapper/307:07:083
32154995032,11cyclictest14316-21aten_r1power_en12:06:503
32154995025,18cyclictest15904-21tr08:47:013
32154995021,11cyclictest17394-21fschecks_count09:57:023
32154995019,13cyclictest0-21swapper/310:32:133
32154995019,12cyclictest0-21swapper/310:47:063
32154995019,12cyclictest0-21swapper/310:47:063
3215399505,27cyclictest0-21swapper/212:26:542
3215399505,27cyclictest0-21swapper/209:32:032
3215399504,28cyclictest0-21swapper/212:01:592
3215299506,35cyclictest0-21swapper/109:06:481
3215299505,26cyclictest0-21swapper/110:37:091
3215299505,13cyclictest0-21swapper/108:22:161
3215299504,27cyclictest0-21swapper/111:32:021
3215299504,27cyclictest0-21swapper/109:46:581
3215299504,26cyclictest0-21swapper/109:06:591
32152995028,14cyclictest0-21swapper/109:37:051
32152995021,12cyclictest0-21swapper/110:47:001
32152995021,12cyclictest0-21swapper/110:47:001
253132502,10sleep30-21swapper/310:12:143
222902502,43sleep10-21swapper/108:59:081
128422503,41sleep10-21swapper/110:56:381
69332492,40sleep10-21swapper/107:20:571
3215499494,28cyclictest0-21swapper/308:37:003
3215499494,27cyclictest0-21swapper/307:17:223
32154994934,9cyclictest23218-21sed10:07:163
32154994934,9cyclictest23218-21sed10:07:163
3215399495,26cyclictest0-21swapper/209:17:122
3215299495,26cyclictest0-21swapper/108:47:161
3215299494,27cyclictest0-21swapper/107:57:071
32152994928,13cyclictest0-21swapper/111:56:501
311182492,10sleep10-21swapper/108:11:561
293002493,40sleep10-21swapper/111:28:061
248599490,5rtkit-daemon2484-21rtkit-daemon07:06:521
234122493,9sleep30-21swapper/307:52:563
186252492,9sleep30-21swapper/312:14:273
78692482,40sleep10-21swapper/108:28:091
62632483,10sleep30-21swapper/308:27:023
3215499485,13cyclictest0-21swapper/312:26:503
3215499484,27cyclictest0-21swapper/310:27:013
3215499484,26cyclictest0-21swapper/311:16:273
32154994817,13cyclictest0-21swapper/311:02:053
3215399484,27cyclictest0-21swapper/209:57:132
3215399482,34cyclictest9329-21awk09:41:472
3215299485,25cyclictest0-21swapper/108:41:501
3215299484,37cyclictest0-21swapper/110:07:121
3215299484,37cyclictest0-21swapper/110:07:121
32152994830,11cyclictest32756-21sed10:27:151
32152994830,11cyclictest26377-21aten_r1power_cu08:01:591
32152994826,15cyclictest0-21swapper/110:32:041
32152994826,14cyclictest0-21swapper/107:52:121
32152994821,9cyclictest14012-21gltestperf08:42:061
32152994821,9cyclictest14012-21gltestperf08:42:061
32152994810,31cyclictest0-21swapper/112:26:401
293232483,39sleep10-21swapper/109:12:271
210172482,40sleep10-21swapper/107:47:461
204322483,8sleep320455-21ntp_offset07:47:153
3215499479,21cyclictest0-21swapper/310:21:553
3215499475,35cyclictest0-21swapper/310:42:043
3215499474,26cyclictest0-21swapper/307:35:523
3215499474,13cyclictest0-21swapper/310:37:063
3215499473,26cyclictest0-21swapper/312:16:593
3215499473,26cyclictest0-21swapper/312:16:593
32154994717,13cyclictest0-21swapper/311:26:523
32154994716,13cyclictest0-21swapper/307:37:163
3215399474,26cyclictest0-21swapper/209:12:012
3215399474,25cyclictest0-21swapper/210:11:552
32153994731,10cyclictest20945-21grep07:47:222
32153994730,10cyclictest23231-21sed07:52:212
3215299475,34cyclictest0-21swapper/111:51:511
3215299475,32cyclictest0-21swapper/110:46:451
3215299474,35cyclictest0-21swapper/111:12:111
3215299473,38cyclictest0-21swapper/107:07:031
3215299473,27cyclictest0-21swapper/110:12:131
284012472,10sleep10-21swapper/110:21:271
248052472,9sleep10-21swapper/111:21:411
162502472,39sleep10-21swapper/107:37:541
101942473,38sleep10-21swapper/108:32:241
3215399464,25cyclictest0-21swapper/210:21:592
3215399464,25cyclictest0-21swapper/210:21:182
3215299465,26cyclictest0-21swapper/111:22:011
3215299465,24cyclictest0-21swapper/109:17:171
3215299464,35cyclictest6109-21rt-features11:47:101
3215299464,35cyclictest0-21swapper/111:07:101
3215299464,35cyclictest0-21swapper/107:42:191
3215299464,34cyclictest0-21swapper/112:07:111
32152994630,10cyclictest4240-21unixbench_singl07:12:251
163362463,9sleep30-21swapper/309:54:573
3215499454,12cyclictest0-21swapper/310:06:153
3215299455,12cyclictest0-21swapper/112:12:051
3215299454,35cyclictest0-21swapper/110:01:461
3215299453,34cyclictest0-21swapper/109:31:581
174662452,37sleep10-21swapper/111:04:241
91502443,34sleep10-21swapper/107:23:471
91502443,34sleep10-21swapper/107:23:471
3215299445,23cyclictest0-21swapper/108:51:591
3215399432,16cyclictest0-21swapper/209:54:442
32152994324,12cyclictest0-21swapper/109:26:571
32152994324,12cyclictest0-21swapper/109:26:571
3215499353,7cyclictest32137-21munin-run07:06:533
3215399332,27cyclictest0-21swapper/207:06:532
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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