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2026-02-23 - 15:46
[ 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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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 23, 2026 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2064966212954,70sleep30-21swapper/307:06:363
20649492117100,11sleep20-21swapper/207:06:232
206511128264,12sleep10-21swapper/107:08:271
206491427051,14sleep00-21swapper/007:05:570
2065376995856,1cyclictest0-21swapper/311:38:523
206537699530,44cyclictest0-21swapper/312:26:023
206537699480,1cyclictest0-21swapper/311:31:193
2065376994735,1cyclictest0-21swapper/311:07:533
206537699442,24cyclictest63750irq/124-enp1s0-TxRx-009:15:203
206537699440,18cyclictest0-21swapper/310:44:333
24482472430,1sleep00-21swapper/011:39:140
2065376994239,1cyclictest0-21swapper/311:10:223
206537699421,18cyclictest63750irq/124-enp1s0-TxRx-009:25:353
2065376994027,1cyclictest0-21swapper/309:41:463
206537699401,36cyclictest0-21swapper/310:25:163
206537699400,31cyclictest0-21swapper/311:03:133
206537699400,27cyclictest0-21swapper/309:10:033
206537699400,19cyclictest0-21swapper/309:30:143
206537699399,8cyclictest0-21swapper/312:03:593
206537699399,8cyclictest0-21swapper/312:03:593
2065376993917,8cyclictest0-21swapper/312:37:533
206537699390,29cyclictest0-21swapper/310:58:013
206537699390,17cyclictest0-21swapper/309:21:143
2065376993835,2cyclictest0-21swapper/311:50:173
206537699383,1cyclictest0-21swapper/311:49:553
206537699380,17cyclictest0-21swapper/311:20:343
2065376993735,1cyclictest0-21swapper/308:09:223
2065376993733,2cyclictest0-21swapper/310:47:543
206537699372,23cyclictest0-21swapper/309:45:043
206537699366,13cyclictest63750irq/124-enp1s0-TxRx-010:14:413
206537699365,12cyclictest0-21swapper/310:51:133
2065376993612,14cyclictest0-21swapper/311:59:473
206537699360,9cyclictest0-21swapper/312:09:343
206537699360,15cyclictest63750irq/124-enp1s0-TxRx-010:35:423
206537699360,12cyclictest0-21swapper/309:37:093
24535192350,1sleep00-21swapper/011:40:230
206537699348,11cyclictest0-21swapper/312:15:303
206537699342,10cyclictest511irq_work/311:40:103
206537699340,17cyclictest63750irq/124-enp1s0-TxRx-008:22:323
206537699332,22cyclictest0-21swapper/309:52:483
206537699321,18cyclictest63750irq/124-enp1s0-TxRx-011:25:323
206537699320,8cyclictest0-21swapper/310:34:563
206537699319,6cyclictest0-21swapper/310:20:083
2065376993111,5cyclictest0-21swapper/307:17:113
206537699310,20cyclictest0-21swapper/309:59:433
206537699310,15cyclictest0-21swapper/312:21:363
23346772300,1sleep00-21swapper/010:31:280
2065376993026,1cyclictest0-21swapper/308:45:263
2065376993024,1cyclictest0-21swapper/311:19:073
206537699302,12cyclictest63750irq/124-enp1s0-TxRx-008:40:153
206537699300,20cyclictest0-21swapper/312:30:143
206537699300,16cyclictest0-21swapper/310:00:053
206537699300,11cyclictest0-21swapper/307:20:213
22487452290,7sleep134-21ksoftirqd/109:41:451
2065376992910,6cyclictest0-21swapper/307:40:223
206537699290,22cyclictest0-21swapper/310:15:213
2065376992821,3cyclictest2097702-21taskset07:35:243
24884442270,23sleep00-21swapper/012:00:470
24884442270,23sleep00-21swapper/012:00:470
24289612270,1sleep10-21swapper/111:26:331
206537699268,15cyclictest63750irq/124-enp1s0-TxRx-008:50:173
2065376992623,1cyclictest0-21swapper/310:08:163
206537699261,13cyclictest0-21swapper/308:10:113
206537699260,7cyclictest0-21swapper/307:14:593
206537699260,13cyclictest0-21swapper/309:00:123
206537699250,9cyclictest0-21swapper/308:35:123
206537699250,17cyclictest25008182sleep312:10:083
24136122240,1sleep00-21swapper/011:18:540
206537699242,7cyclictest0-21swapper/307:25:123
206537699240,20cyclictest2191045-21taskset09:08:193
24742372230,1sleep10-21swapper/111:54:391
206537699230,9cyclictest0-21swapper/308:15:113
206537699221,9cyclictest0-21swapper/308:55:123
206537699221,10cyclictest0-21swapper/308:30:123
24148452211,10sleep02414864-21apt-get11:20:100
206537699212,6cyclictest0-21swapper/307:45:113
206537699210,10cyclictest0-21swapper/308:00:113
23162642201,5sleep02316399-21grep10:20:250
2065376992014,4cyclictest0-21swapper/307:33:023
206537699200,8cyclictest0-21swapper/307:50:123
206537699190,9cyclictest0-21swapper/308:25:103
24744912182,8sleep22474522-21munin-run11:55:002
23959122181,3sleep20-21swapper/211:08:022
23029742181,3sleep20-21swapper/210:14:502
22224762181,3sleep20-21swapper/209:25:552
24114502170,3sleep10-21swapper/111:16:021
23003602171,5sleep02191188-21diskmemload10:11:220
22413852171,3sleep00-21swapper/009:38:200
21974952171,3sleep10-21swapper/109:11:471
21974132171,4sleep22191188-21diskmemload09:11:402
25477852161,10sleep12547838-21ld12:35:201
25183072161,8sleep22518576-21df_inode12:20:132
24376062161,10sleep02191188-21diskmemload11:31:410
24120722161,10sleep22191188-21diskmemload11:16:512
23519922160,3sleep00-21swapper/010:41:500
23116352161,3sleep20-21swapper/210:19:592
25136592151,9sleep22513720-21ntpq12:15:202
22787342151,6sleep02280374-21kthreadcore10:00:170
206537699151,11cyclictest0-21swapper/307:55:253
25397842140,1sleep20-21swapper/212:30:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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