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2026-02-17 - 01:35
[ 290.152] (II) VESA: driver for VESA chipsets: vesa

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #3

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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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot3s.osadl.org (updated Mon Feb 16, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304282221230,2sleep014-21ksoftirqd/012:05:250
2620981212059,56sleep30-21swapper/307:05:553
262100729058,12sleep10-21swapper/107:06:131
262095028466,12sleep20-21swapper/207:05:302
262111627553,6sleep00-21swapper/007:07:370
262142099601,21cyclictest0-21swapper/307:56:373
2621420995718,25cyclictest0-21swapper/310:44:483
262142099532,36cyclictest0-21swapper/309:59:563
262142099520,17cyclictest0-21swapper/309:46:023
2621420995149,1cyclictest0-21swapper/309:36:593
262142099490,35cyclictest63750irq/124-enp1s0-TxRx-012:15:553
2621420994846,1cyclictest0-21swapper/310:17:203
2621420994845,1cyclictest0-21swapper/309:51:233
262142099477,17cyclictest63750irq/124-enp1s0-TxRx-010:55:153
2621420994745,1cyclictest0-21swapper/312:23:423
2621420994744,1cyclictest0-21swapper/308:20:183
2621420994744,1cyclictest0-21swapper/307:50:223
29284592460,1sleep00-21swapper/010:57:360
2621420994644,1cyclictest0-21swapper/311:01:223
2621420994643,1cyclictest0-21swapper/310:21:133
262142099460,27cyclictest0-21swapper/309:18:013
262142099454,19cyclictest0-21swapper/309:25:563
262142099453,23cyclictest0-21swapper/311:37:323
262142099452,26cyclictest63750irq/124-enp1s0-TxRx-011:59:313
262142099440,21cyclictest63750irq/124-enp1s0-TxRx-010:26:203
262142099440,18cyclictest0-21swapper/311:21:453
28962742430,1sleep20-21swapper/210:39:062
2621420994341,1cyclictest0-21swapper/308:25:123
2621420994341,1cyclictest0-21swapper/308:25:113
2621420994340,1cyclictest0-21swapper/310:32:143
2621420994337,3cyclictest30775292sleep312:28:473
262142099430,41cyclictest0-21swapper/312:30:563
262142099430,38cyclictest26489372sleep307:34:413
262142099430,11cyclictest0-21swapper/311:19:133
2621420994240,1cyclictest0-21swapper/310:10:293
2621420994240,1cyclictest0-21swapper/307:15:013
2621420994239,1cyclictest0-21swapper/312:11:463
2621420994239,1cyclictest0-21swapper/312:02:293
2621420994239,1cyclictest0-21swapper/311:51:163
2621420994239,1cyclictest0-21swapper/310:52:443
2621420994138,1cyclictest0-21swapper/310:07:173
2621420994136,2cyclictest0-21swapper/312:37:553
30449602400,1sleep10-21swapper/112:08:401
2621420994038,1cyclictest0-21swapper/311:45:243
2621420994038,1cyclictest0-21swapper/311:12:243
2621420994038,1cyclictest0-21swapper/310:49:103
2621420994038,1cyclictest0-21swapper/308:40:183
2621420994037,1cyclictest0-21swapper/311:41:553
2621420994037,1cyclictest0-21swapper/307:48:223
2621420993935,2cyclictest0-21swapper/307:21:153
262142099390,24cyclictest0-21swapper/312:09:393
262142099390,21cyclictest63750irq/124-enp1s0-TxRx-011:33:343
262142099379,11cyclictest63750irq/124-enp1s0-TxRx-009:41:333
262142099371,12cyclictest0-21swapper/308:00:153
262142099370,35cyclictest0-21swapper/308:35:133
2621420993633,1cyclictest0-21swapper/308:35:013
2621420993627,1cyclictest0-21swapper/310:37:543
30864782350,1sleep00-21swapper/012:34:240
27888172350,1sleep10-21swapper/109:34:031
2621420993533,1cyclictest0-21swapper/311:29:573
2621420993532,1cyclictest0-21swapper/310:01:593
2621420993530,3cyclictest63750irq/124-enp1s0-TxRx-009:33:303
30284352341,3sleep10-21swapper/111:58:391
2621420993431,1cyclictest0-21swapper/311:06:143
262142099340,32cyclictest0-21swapper/309:10:323
28046882331,2sleep02804696-21ssh09:43:160
27936512331,8sleep22747748-21diskmemload09:35:192
27701462330,1sleep10-21swapper/109:21:361
2621420993230,1cyclictest0-21swapper/309:20:313
2621420993129,1cyclictest0-21swapper/308:10:193
30777052290,1sleep20-21swapper/212:29:022
262142099290,13cyclictest0-21swapper/309:00:113
30696092280,1sleep00-21swapper/012:24:110
28525012280,1sleep00-21swapper/010:10:460
2621420992825,2cyclictest0-21swapper/308:15:213
2621420992824,2cyclictest0-21swapper/307:40:173
262142099270,19cyclictest27475422sleep309:07:353
29789802260,1sleep00-21swapper/011:28:590
2621420992617,1cyclictest0-21swapper/308:05:173
262142099260,8cyclictest0-21swapper/307:10:193
262142099260,10cyclictest0-21swapper/308:50:193
29195402240,2sleep10-21swapper/110:51:341
28626492231,4sleep22747748-21diskmemload10:18:262
2621420992319,2cyclictest0-21swapper/307:25:193
262142099220,6cyclictest0-21swapper/307:35:103
27716812210,1sleep20-21swapper/209:23:462
29957052200,1sleep20-21swapper/211:39:112
27699482190,1sleep00-21swapper/009:21:190
2621420991915,2cyclictest0-21swapper/309:00:013
262142099190,10cyclictest0-21swapper/308:45:223
30024682180,1sleep10-21swapper/111:41:541
27425512180,1sleep20-21swapper/209:04:222
29765662171,4sleep22747748-21diskmemload11:25:322
29284302171,3sleep10-21swapper/110:57:331
30593602160,2sleep00-21swapper/012:15:530
30529832161,2sleep00-21swapper/012:13:290
30193742161,4sleep22747748-21diskmemload11:52:332
29700522160,2sleep00-21swapper/011:23:020
29380612161,3sleep10-21swapper/111:04:311
28460922161,3sleep02747748-21diskmemload10:08:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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