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2026-02-21 - 19:47
[ 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 #a, slot #5

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.

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 rackaslot5s.osadl.org (updated Sat Feb 21, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811260,0rcu_preempt54-21kswapd010:46:580
811050,0rcu_preempt19-21ksoftirqd/110:44:021
100501040,0irq/346-484840016255-1kworker/0:0H12:34:520
81920,0rcu_preempt3-21ksoftirqd/012:03:200
10050880,0irq/346-48484004836-1kworker/0:0H10:50:210
81730,0rcu_preempt8295-21ssh09:14:071
81720,0rcu_preempt19-21ksoftirqd/111:03:351
81690,0rcu_preempt19-21ksoftirqd/110:29:101
81680,0rcu_preempt3-21ksoftirqd/012:29:490
81680,0rcu_preempt19-21ksoftirqd/109:29:081
10050680,0irq/346-484840054-21kswapd010:14:500
81660,0rcu_preempt0-21swapper/111:59:011
81640,0rcu_preempt9957-21kworker/1:210:18:181
81640,0rcu_preempt19-21ksoftirqd/111:44:341
81640,0rcu_preempt19-21ksoftirqd/109:37:101
81630,0rcu_preempt19-21ksoftirqd/111:24:431
81620,0rcu_preempt19-21ksoftirqd/111:22:571
81610,0rcu_preempt19-21ksoftirqd/112:32:391
9950600,0irq/345-484840019-21ksoftirqd/111:14:481
81600,0rcu_preempt19-21ksoftirqd/111:31:021
81600,0rcu_preempt19-21ksoftirqd/110:58:311
81600,0rcu_preempt19-21ksoftirqd/110:24:061
81600,0rcu_preempt19-21ksoftirqd/109:17:441
81590,0rcu_preempt21807-21kworker/0:109:25:460
81590,0rcu_preempt19-21ksoftirqd/112:26:291
81580,0rcu_preempt19-21ksoftirqd/112:23:331
81580,0rcu_preempt19-21ksoftirqd/112:23:331
81580,0rcu_preempt0-21swapper/108:19:501
10050580,0irq/346-48484001993-1kworker/0:2H10:14:100
81570,0rcu_preempt19-21ksoftirqd/109:43:061
81560,0rcu_preempt19-21ksoftirqd/109:19:441
81550,0rcu_preempt3-21ksoftirqd/011:53:550
81550,0rcu_preempt3-21ksoftirqd/008:45:300
81550,0rcu_preempt19-21ksoftirqd/110:07:331
81540,0rcu_preempt54-21kswapd009:49:460
81540,0rcu_preempt3-21ksoftirqd/012:14:300
81540,0rcu_preempt27199-21apt-get07:04:310
81540,0rcu_preempt19-21ksoftirqd/112:16:371
81540,0rcu_preempt19-21ksoftirqd/110:50:021
81540,0rcu_preempt19-21ksoftirqd/110:47:401
81540,0rcu_preempt19-21ksoftirqd/109:33:411
81540,0rcu_preempt19-21ksoftirqd/108:14:321
81530,0rcu_preempt3-21ksoftirqd/011:14:330
81530,0rcu_preempt3-21ksoftirqd/009:40:580
81530,0rcu_preempt3-21ksoftirqd/008:19:350
9950520,0irq/345-484840029371-1kworker/0:0H10:06:370
81520,0rcu_preempt19888-21kworker/0:212:06:530
81520,0rcu_preempt17539-21kworker/0:108:13:080
10050520,0irq/346-48484004697-1kworker/0:2H11:38:160
10050520,0irq/346-484840030012-1kworker/0:1H11:12:020
9950510,0irq/345-484840030011-1kworker/1:0H11:13:531
9950510,0irq/345-484840019261-1kworker/1:2H10:01:021
9950510,0irq/345-484840013615-21runrttasks10:54:580
81510,0rcu_preempt5675-21kworker/0:210:01:030
81510,0rcu_preempt3-21ksoftirqd/012:19:350
81510,0rcu_preempt3-21ksoftirqd/012:19:350
81510,0rcu_preempt3-21ksoftirqd/012:12:140
81510,0rcu_preempt3-21ksoftirqd/011:08:370
81510,0rcu_preempt3-21ksoftirqd/010:39:330
81510,0rcu_preempt3-21ksoftirqd/010:29:410
81510,0rcu_preempt3-21ksoftirqd/010:29:200
81510,0rcu_preempt19325-21kworker/0:208:24:350
81510,0rcu_preempt19-21ksoftirqd/111:04:381
81510,0rcu_preempt19-21ksoftirqd/108:06:591
81510,0rcu_preempt12522-21ping07:59:500
81510,0rcu_preempt10259-21ntpq07:49:420
9950500,0irq/345-48484003425-21diskmemload12:08:291
9950500,0irq/345-484840022797-1kworker/1:0H11:40:021
9950500,0irq/345-484840018373-1kworker/1:2H12:38:021
81500,0rcu_preempt5675-21kworker/0:209:48:290
81500,0rcu_preempt3-21ksoftirqd/011:48:290
81500,0rcu_preempt3-21ksoftirqd/011:30:380
81500,0rcu_preempt3-21ksoftirqd/010:59:340
81500,0rcu_preempt3-21ksoftirqd/008:39:460
81500,0rcu_preempt3-21ksoftirqd/007:58:220
81500,0rcu_preempt21807-21kworker/0:109:11:500
81500,0rcu_preempt21328-21kworker/0:209:31:530
81500,0rcu_preempt12515-21ntpq09:49:431
10050500,0irq/346-48484007041-1kworker/0:1H10:36:030
9950490,0irq/345-48484004115-1kworker/1:0H09:45:531
9950490,0irq/345-484840019590-21apt-get10:29:341
81490,0rcu_preempt3-21ksoftirqd/008:05:460
81490,0rcu_preempt19-21ksoftirqd/107:59:441
81490,0rcu_preempt10548-21grep10:19:470
10050490,0irq/346-48484004697-1kworker/0:2H11:28:070
9950480,0irq/345-48484006149-21ssh11:52:361
81480,0rcu_preempt3-21ksoftirqd/011:41:510
81480,0rcu_preempt3-21ksoftirqd/011:20:550
81480,0rcu_preempt3-21ksoftirqd/009:22:500
10050480,0irq/346-484840028709-21cyclictest12:25:280
9950470,0irq/345-484840022355-21ssh11:36:081
9950470,0irq/345-48484000-21swapper/107:59:201
9950470,0irq/345-48484000-21swapper/009:54:430
90762470,0chrt10050irq/346-484840007:45:180
81470,0rcu_preempt3-21ksoftirqd/011:56:490
81470,0rcu_preempt3-21ksoftirqd/009:04:440
9950460,0irq/345-484840024730-21egrep10:34:331
81460,0rcu_preempt3-21ksoftirqd/009:34:360
81460,0rcu_preempt3-21ksoftirqd/008:18:360
81460,0rcu_preempt19-21ksoftirqd/111:59:431
81460,0rcu_preempt19-21ksoftirqd/108:24:431
81460,0rcu_preempt15843-21kworker/1:008:29:451
81450,0rcu_preempt3-21ksoftirqd/008:59:570
81450,0rcu_preempt3-21ksoftirqd/007:29:330
81450,0rcu_preempt21807-21kworker/0:108:58:460
81450,0rcu_preempt19-21ksoftirqd/112:09:431
81450,0rcu_preempt19-21ksoftirqd/107:44:351
81450,0rcu_preempt19-21ksoftirqd/107:39:341
9950440,0irq/345-48484000-21swapper/110:12:461
81440,0rcu_preempt3-21ksoftirqd/009:14:390
81440,0rcu_preempt3-21ksoftirqd/008:29:400
81440,0rcu_preempt3-21ksoftirqd/007:14:440
81440,0rcu_preempt3-21ksoftirqd/007:10:550
81440,0rcu_preempt19-21ksoftirqd/109:55:491
81440,0rcu_preempt19-21ksoftirqd/108:34:321
9950430,0irq/345-48484000-21swapper/007:39:490
81430,0rcu_preempt19325-21kworker/0:208:35:040
81430,0rcu_preempt19-21ksoftirqd/108:09:321
81430,0rcu_preempt19-21ksoftirqd/107:29:401
81430,0rcu_preempt19-21ksoftirqd/107:28:201
81430,0rcu_preempt19-21ksoftirqd/107:22:571
81420,0rcu_preempt3-21ksoftirqd/007:24:470
81420,0rcu_preempt19-21ksoftirqd/108:54:371
10050420,0irq/346-48484003-21ksoftirqd/007:39:110
10050420,0irq/346-48484003-21ksoftirqd/007:39:110
81410,0rcu_preempt3-21ksoftirqd/008:49:460
81400,0rcu_preempt19-21ksoftirqd/109:09:211
81400,0rcu_preempt19-21ksoftirqd/107:14:461
81390,0rcu_preempt19-21ksoftirqd/107:49:391
81390,0rcu_preempt19-21ksoftirqd/107:08:411
81380,0rcu_preempt4857-21df_abs07:34:341
81380,0rcu_preempt4857-21df_abs07:34:341
81380,0rcu_preempt3-21ksoftirqd/007:20:520
81380,0rcu_preempt19-21ksoftirqd/108:59:391
81360,0rcu_preempt19-21ksoftirqd/108:50:151
81360,0rcu_preempt19-21ksoftirqd/108:45:001
81360,0rcu_preempt19-21ksoftirqd/107:11:531
81350,0rcu_preempt19-21ksoftirqd/108:44:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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