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2026-02-25 - 22:57
[ 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 Wed Feb 25, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81740,0rcu_preempt3-21ksoftirqd/009:57:010
81730,0rcu_preempt15474-21apt-get12:04:260
81720,0rcu_preempt3-21ksoftirqd/010:24:040
3144099726,0cyclictest6151-1kworker/0:3H11:23:160
81710,0rcu_preempt3-21ksoftirqd/011:14:290
3144099715,0cyclictest0-21swapper/010:44:330
81690,0rcu_preempt3-21ksoftirqd/008:44:390
81690,0rcu_preempt29467-21grep11:44:440
3144099692,0cyclictest0-21swapper/012:24:350
81680,0rcu_preempt6133-21diskmemload10:04:450
3144099681,0cyclictest11048-1kworker/0:0H11:35:160
10050680,0irq/346-484840054-21kswapd009:03:330
81670,0rcu_preempt6133-21diskmemload10:34:160
81670,0rcu_preempt4641-21apt-get09:04:270
81670,0rcu_preempt31160-21grep12:19:450
3144099672,0cyclictest0-21swapper/010:27:060
81660,0rcu_preempt3-21ksoftirqd/012:38:470
3144099667,0cyclictest9262-21if_eth209:44:370
3144099662,0cyclictest0-21swapper/012:33:170
3144099661,0cyclictest18756-21chrt11:00:370
3144099652,0cyclictest0-21swapper/010:53:100
81640,0rcu_preempt3-21ksoftirqd/009:26:290
3144099646,0cyclictest0-21swapper/011:07:220
3144099643,0cyclictest3-21ksoftirqd/011:55:210
3144099642,0cyclictest12887-21ssh09:15:070
3144099637,0cyclictest0-21swapper/010:58:580
3144099632,0cyclictest0-21swapper/009:37:080
31440996311,0cyclictest23556-21munin-node0
81620,0rcu_preempt16322-21ntpq07:59:430
31440996212,0cyclictest0-21swapper/009:49:370
3144099621,0cyclictest26831-1kworker/0:0H10:39:330
3144099621,0cyclictest0-21swapper/011:13:020
81610,0rcu_preempt3-21ksoftirqd/008:14:280
3144099617,0cyclictest28923-1kworker/0:1H09:33:470
3144099612,0cyclictest0-21swapper/012:03:420
3144099612,0cyclictest0-21swapper/011:29:360
3144099612,0cyclictest0-21swapper/010:15:510
3144099612,0cyclictest0-21swapper/009:13:340
81600,0rcu_preempt24438-21ps09:59:420
3144099608,0cyclictest27461-1kworker/0:1H12:19:080
3144099602,0cyclictest2731-21cut07:19:380
3144099602,0cyclictest16393-21munin-node0
10050600,0irq/346-484840054-21kswapd010:32:561
10050600,0irq/346-48484001067-21lighttpd12:31:481
81590,0rcu_preempt3-21ksoftirqd/012:09:370
81590,0rcu_preempt19-21ksoftirqd/107:19:431
10050590,0irq/346-484840027460-1kworker/1:0H12:17:111
81580,0rcu_preempt6133-21diskmemload10:09:320
81580,0rcu_preempt3-21ksoftirqd/007:54:400
81580,0rcu_preempt3-21ksoftirqd/007:09:390
81580,0rcu_preempt3-21ksoftirqd/007:09:390
81580,0rcu_preempt19-21ksoftirqd/109:19:381
3144099582,0cyclictest9496-21ssh11:24:360
10050580,0irq/346-484840054-21kswapd011:37:091
81570,0rcu_preempt19-21ksoftirqd/107:28:211
3144099575,0cyclictest3798-21ssh09:39:270
3144099572,0cyclictest1097-21ssh11:49:300
3144099572,0cyclictest0-21swapper/007:34:180
31440995716,0cyclictest23444-21runrttasks08:21:260
10050570,0irq/346-484840054-21kswapd010:18:351
81560,0rcu_preempt3-21ksoftirqd/008:34:280
81560,0rcu_preempt24971-21munin-run12:14:161
81560,0rcu_preempt19-21ksoftirqd/110:49:331
3144099562,0cyclictest11652-21munin-node0
3144099562,0cyclictest0-21swapper/010:34:350
10050560,0irq/346-484840028922-1kworker/1:1H09:32:031
10050560,0irq/346-484840011047-1kworker/1:0H11:26:451
81550,0rcu_preempt3-21ksoftirqd/008:54:390
81550,0rcu_preempt3-21ksoftirqd/008:13:310
81550,0rcu_preempt23872-21apt-get08:24:280
81550,0rcu_preempt19-21ksoftirqd/111:39:281
81550,0rcu_preempt19-21ksoftirqd/107:16:371
3144099553,0cyclictest30035-1kworker/0:1H08:44:160
3144099552,0cyclictest0-21swapper/007:29:490
3144099551,0cyclictest32098-21munin-node0
10050550,0irq/346-48484004246-1kworker/1:2H10:48:281
10050550,0irq/346-484840017041-1kworker/1:2H10:28:071
81540,0rcu_preempt9551-21ntpq09:44:411
81540,0rcu_preempt3-21ksoftirqd/007:49:340
81540,0rcu_preempt3-21ksoftirqd/007:14:370
81540,0rcu_preempt13093-21ssh10:54:451
3144099542,0cyclictest0-21swapper/007:24:300
3144099541,0cyclictest15131-21ping08:04:430
10050540,0irq/346-484840054-21kswapd012:37:381
10050540,0irq/346-484840054-21kswapd011:45:391
10050540,0irq/346-484840054-21kswapd010:41:541
10050540,0irq/346-484840054-21kswapd009:28:451
10050540,0irq/346-48484001215-1kworker/1:0H11:19:321
10050540,0irq/346-484840010749-1kworker/1:3H12:25:511
81530,0rcu_preempt19-21ksoftirqd/112:19:461
81530,0rcu_preempt19-21ksoftirqd/111:51:071
81530,0rcu_preempt19-21ksoftirqd/110:21:211
81530,0rcu_preempt19-21ksoftirqd/108:26:571
81530,0rcu_preempt19-21ksoftirqd/107:34:371
3144099532,0cyclictest25088-1kworker/0:0H08:29:470
3144099532,0cyclictest2322-21ping07:39:280
10050530,0irq/346-484840054-21kswapd009:36:591
10050530,0irq/346-484840020551-1kworker/1:0H09:58:531
81520,0rcu_preempt19-21ksoftirqd/111:14:291
10050520,0irq/346-484840054-21kswapd010:35:241
10050510,0irq/346-4848400695-21munin-node1
10050510,0irq/346-484840054-21kswapd011:56:201
10050510,0irq/346-48484003062-1kworker/1:1H11:59:231
10050510,0irq/346-484840018830-21ssh11:00:421
10050510,0irq/346-484840015820-21ssh11:30:461
10050500,0irq/346-484840015591-1kworker/1:3H09:51:031
81490,0rcu_preempt32754-21apt-get10:09:261
81490,0rcu_preempt19-21ksoftirqd/109:59:431
81490,0rcu_preempt19-21ksoftirqd/108:14:171
10050490,0irq/346-484840031085-21ssh10:07:211
81480,0rcu_preempt19-21ksoftirqd/107:54:331
10050480,0irq/346-484840054-21kswapd009:10:481
10050480,0irq/346-484840023544-21ssh11:05:291
10050480,0irq/346-484840017500-21ssh12:05:481
10050480,0irq/346-48484001490-1kworker/1:2H09:40:021
81470,0rcu_preempt3-21ksoftirqd/007:05:000
81470,0rcu_preempt19-21ksoftirqd/107:40:121
10050470,0irq/346-484840014454-21ssh09:17:121
81460,0rcu_preempt19-21ksoftirqd/108:29:441
10050460,0irq/346-484840028407-21ssh11:10:271
81440,0rcu_preempt19-21ksoftirqd/107:59:371
81420,0rcu_preempt19-21ksoftirqd/108:04:351
81420,0rcu_preempt19-21ksoftirqd/107:44:451
81420,0rcu_preempt19-21ksoftirqd/107:05:231
81410,0rcu_preempt19-21ksoftirqd/108:19:441
81400,0rcu_preempt19-21ksoftirqd/107:29:401
81400,0rcu_preempt15379-21kworker/1:008:34:431
81390,0rcu_preempt19-21ksoftirqd/109:04:401
81390,0rcu_preempt19-21ksoftirqd/108:44:421
81390,0rcu_preempt19-21ksoftirqd/108:19:161
81390,0rcu_preempt19-21ksoftirqd/107:09:341
81390,0rcu_preempt19-21ksoftirqd/107:09:341
81380,0rcu_preempt19-21ksoftirqd/108:59:161
81360,0rcu_preempt19-21ksoftirqd/108:59:421
81360,0rcu_preempt19-21ksoftirqd/108:39:411
81360,0rcu_preempt19-21ksoftirqd/107:49:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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