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2026-02-16 - 18:26
[ 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 highest latencies:
System rackaslot5s.osadl.org (updated Mon Feb 16, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811380,0rcu_preempt3-21ksoftirqd/011:25:090
811380,0rcu_preempt3-21ksoftirqd/011:25:090
811270,0rcu_preempt3-21ksoftirqd/010:37:210
811230,0rcu_preempt3-21ksoftirqd/011:06:300
81900,0rcu_preempt19023-21cyclictest09:19:360
81710,0rcu_preempt24315-21ssh11:46:431
81700,0rcu_preempt19-21ksoftirqd/109:33:201
81680,0rcu_preempt3-21ksoftirqd/010:54:450
81680,0rcu_preempt3-21ksoftirqd/009:32:150
10050680,0irq/346-4848400181ktimersoftd/112:20:541
81660,0rcu_preempt19-21ksoftirqd/110:50:381
81660,0rcu_preempt19-21ksoftirqd/108:43:481
81650,0rcu_preempt851-21rngd11:01:500
81650,0rcu_preempt19-21ksoftirqd/109:23:421
10050650,0irq/346-4848400171rcuc/112:25:181
10050650,0irq/346-48484000-21swapper/010:46:420
81640,0rcu_preempt54-21kswapd010:49:410
81640,0rcu_preempt19-21ksoftirqd/107:39:391
81630,0rcu_preempt54-21kswapd011:57:111
81630,0rcu_preempt3-21ksoftirqd/010:04:360
81620,0rcu_preempt54-21kswapd012:12:080
81620,0rcu_preempt3-21ksoftirqd/011:44:580
10050620,0irq/346-4848400181ktimersoftd/110:42:311
9950610,0irq/345-4848400171rcuc/112:01:041
81610,0rcu_preempt54-21kswapd011:43:380
81610,0rcu_preempt54-21kswapd011:43:380
81610,0rcu_preempt54-21kswapd009:46:260
81610,0rcu_preempt19-21ksoftirqd/109:53:501
81600,0rcu_preempt3-21ksoftirqd/011:49:510
81600,0rcu_preempt3-21ksoftirqd/010:19:400
81600,0rcu_preempt3-21ksoftirqd/010:09:540
81600,0rcu_preempt19-21ksoftirqd/112:35:581
81600,0rcu_preempt19-21ksoftirqd/109:27:221
81600,0rcu_preempt19-21ksoftirqd/109:27:221
10050600,0irq/346-484840054-21kswapd011:39:261
10050600,0irq/346-48484003685-21ssh09:19:081
10050600,0irq/346-484840029376-21ssh10:48:041
10050600,0irq/346-4848400171rcuc/112:05:011
10050600,0irq/346-4848400171rcuc/112:05:011
9950590,0irq/345-4848400181ktimersoftd/111:05:031
9950590,0irq/345-4848400171rcuc/111:39:371
9950590,0irq/345-4848400171rcuc/111:39:371
9950590,0irq/345-4848400171rcuc/109:41:261
81590,0rcu_preempt3-21ksoftirqd/008:44:430
81590,0rcu_preempt3-21ksoftirqd/007:19:410
10050590,0irq/346-48484002057-21ssh12:29:170
10050590,0irq/346-48484000-21swapper/012:34:210
9950580,0irq/345-4848400181ktimersoftd/111:13:481
9950580,0irq/345-4848400171rcuc/111:20:351
81580,0rcu_preempt3-21ksoftirqd/008:14:500
81580,0rcu_preempt19-21ksoftirqd/112:12:311
81580,0rcu_preempt19-21ksoftirqd/111:49:511
81580,0rcu_preempt19-21ksoftirqd/111:34:201
81580,0rcu_preempt19-21ksoftirqd/110:24:491
81580,0rcu_preempt19-21ksoftirqd/108:04:441
81580,0rcu_preempt19-21ksoftirqd/107:29:431
81580,0rcu_preempt19-21ksoftirqd/107:24:221
10050580,0irq/346-484840022294-1kworker/0:0H12:19:360
10050580,0irq/346-48484000-21swapper/009:42:210
9950570,0irq/345-4848400181ktimersoftd/111:16:481
81570,0rcu_preempt3-21ksoftirqd/008:14:250
81570,0rcu_preempt19-21ksoftirqd/109:57:081
10050570,0irq/346-48484007263-21ps11:29:500
10050570,0irq/346-4848400181ktimersoftd/110:18:481
10050570,0irq/346-4848400181ktimersoftd/110:18:481
9950560,0irq/345-4848400181ktimersoftd/110:00:291
9950560,0irq/345-48484000-21swapper/011:59:410
81560,0rcu_preempt3-21ksoftirqd/008:39:350
81560,0rcu_preempt20895-21kworker/0:210:24:490
81560,0rcu_preempt20350-21ntp_states08:49:480
10050560,0irq/346-48484004391-1kworker/1:0H08:19:381
10050560,0irq/346-484840032172-1kworker/0:2H07:59:400
10050560,0irq/346-484840031911-1kworker/0:2H09:55:070
10050560,0irq/346-484840022815-21munin-run08:59:250
10050560,0irq/346-484840022488-21ssh12:16:591
10050560,0irq/346-4848400171rcuc/110:58:031
9950550,0irq/345-4848400181ktimersoftd/109:46:411
81550,0rcu_preempt3-21ksoftirqd/012:04:420
81550,0rcu_preempt3-21ksoftirqd/012:04:420
81550,0rcu_preempt0-21swapper/112:33:301
81550,0rcu_preempt0-21swapper/110:05:201
10050550,0irq/346-484840023067-1kworker/0:4H10:43:350
10050550,0irq/346-48484000-21swapper/011:22:250
10050550,0irq/346-48484000-21swapper/009:16:410
81540,0rcu_preempt3-21ksoftirqd/011:14:480
81540,0rcu_preempt3-21ksoftirqd/009:38:350
81540,0rcu_preempt3-21ksoftirqd/009:24:430
81540,0rcu_preempt3-21ksoftirqd/009:24:430
81540,0rcu_preempt3-21ksoftirqd/009:09:450
81540,0rcu_preempt19-21ksoftirqd/110:59:431
81540,0rcu_preempt19-21ksoftirqd/110:20:141
10050540,0irq/346-4848400171rcuc/110:29:351
9950530,0irq/345-4848400171rcuc/108:24:421
10050530,0irq/346-484840031911-1kworker/0:2H09:59:330
10050530,0irq/346-484840018818-21rm11:09:410
10050530,0irq/346-484840013677-21ssh10:32:260
81520,0rcu_preempt54-21kswapd007:59:371
81520,0rcu_preempt3-21ksoftirqd/008:24:490
10050520,0irq/346-48484000-21swapper/012:35:300
9950510,0irq/345-484840022313-21ping07:39:410
81510,0rcu_preempt4175-21kworker/1:111:26:311
81510,0rcu_preempt4175-21kworker/1:111:26:311
81510,0rcu_preempt3-21ksoftirqd/011:34:460
10050510,0irq/346-48484002535-21http_loadtime09:49:430
10050510,0irq/346-484840019569-21munin-node0
9950500,0irq/345-48484009806-21apt-get08:19:360
9950500,0irq/345-4848400851-21rngd10:14:560
9950500,0irq/345-4848400851-21rngd10:14:560
81500,0rcu_preempt3-21ksoftirqd/011:54:500
10050500,0irq/346-48484004394-1kworker/0:4H08:04:430
10050500,0irq/346-484840019447-21ssh10:38:211
10050500,0irq/346-48484001790-21munin-node0
10050500,0irq/346-4848400171rcuc/110:12:001
10050500,0irq/346-4848400171rcuc/108:16:061
10050490,0irq/346-484840020807-21munin-node0
9950480,0irq/345-484840026021-21php-cgi07:29:430
81480,0rcu_preempt19-21ksoftirqd/107:25:581
10050480,0irq/346-484840015020-21if_can008:34:420
9950470,0irq/345-484840021759-1kworker/1:0H09:37:471
81470,0rcu_preempt3-21ksoftirqd/007:49:460
10050470,0irq/346-484840024165-1kworker/1:3H09:11:101
10050470,0irq/346-484840023241-21http_loadtime08:59:460
10050470,0irq/346-48484000-21swapper/107:59:261
81460,0rcu_preempt3-21ksoftirqd/009:04:430
81460,0rcu_preempt19-21ksoftirqd/108:49:441
81460,0rcu_preempt17024-1kworker/0:3H07:04:490
10050460,0irq/346-484840012625-1kworker/0:1H08:29:440
81450,0rcu_preempt3-21ksoftirqd/007:09:450
81450,0rcu_preempt19-21ksoftirqd/108:09:381
81440,0rcu_preempt19-21ksoftirqd/107:37:531
81440,0rcu_preempt13089-21apt-get08:29:341
81430,0rcu_preempt19-21ksoftirqd/109:00:101
10050430,0irq/346-48484003-21ksoftirqd/007:36:000
81410,0rcu_preempt3-21ksoftirqd/007:44:440
81400,0rcu_preempt19-21ksoftirqd/107:49:441
81400,0rcu_preempt19-21ksoftirqd/107:45:541
81400,0rcu_preempt19-21ksoftirqd/107:04:391
10050400,0irq/346-484840024789-21munin-node0
81390,0rcu_preempt19-21ksoftirqd/107:10:041
81380,0rcu_preempt19-21ksoftirqd/109:04:551
81380,0rcu_preempt19-21ksoftirqd/108:54:271
81370,0rcu_preempt19-21ksoftirqd/108:35:091
81350,0rcu_preempt19-21ksoftirqd/108:45:361
10050350,0irq/346-48484000-21swapper/107:14:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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