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2026-01-14 - 15:33
[ 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 Wed Jan 14, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811020,0rcu_preempt3-21ksoftirqd/009:35:170
81890,0rcu_preempt19-21ksoftirqd/112:11:231
81870,0rcu_preempt54-21kswapd010:48:281
81860,0rcu_preempt19-21ksoftirqd/110:20:161
81840,0rcu_preempt19-21ksoftirqd/109:38:111
10050840,0irq/346-4848400111rcuc/011:43:040
81830,0rcu_preempt0-21swapper/111:19:581
10050800,0irq/346-4848400111rcuc/010:05:370
81750,0rcu_preempt23291-21ssh12:22:201
81750,0rcu_preempt19-21ksoftirqd/107:45:141
10050750,0irq/346-4848400111rcuc/010:19:580
81740,0rcu_preempt3-21ksoftirqd/009:34:040
81740,0rcu_preempt19-21ksoftirqd/112:29:461
81740,0rcu_preempt19-21ksoftirqd/109:57:121
81730,0rcu_preempt19-21ksoftirqd/111:58:121
81730,0rcu_preempt19-21ksoftirqd/109:23:101
81720,0rcu_preempt3-21ksoftirqd/010:52:270
81710,0rcu_preempt3-21ksoftirqd/009:42:390
81710,0rcu_preempt3-21ksoftirqd/008:45:150
81710,0rcu_preempt19-21ksoftirqd/111:04:301
10050700,0irq/346-4848400111rcuc/010:41:560
81690,0rcu_preempt3-21ksoftirqd/011:47:100
81680,0rcu_preempt54-21kswapd011:48:091
81670,0rcu_preempt54-21kswapd012:16:390
81660,0rcu_preempt19-21ksoftirqd/110:34:161
2323299652,0cyclictest2288950kworker/0:0H07:20:050
81640,0rcu_preempt3793-1kworker/1:1H12:03:031
81620,0rcu_preempt7815-1kworker/1:2H09:40:011
81620,0rcu_preempt3-21ksoftirqd/008:15:050
81620,0rcu_preempt19-21ksoftirqd/112:17:061
2323299621,0cyclictest0-21swapper/012:10:570
10050620,0irq/346-4848400511-1kworker/1:0H09:13:241
81610,0rcu_preempt3-21ksoftirqd/011:58:440
81610,0rcu_preempt19-21ksoftirqd/110:50:101
81610,0rcu_preempt19-21ksoftirqd/109:52:081
81610,0rcu_preempt19-21ksoftirqd/109:45:111
81610,0rcu_preempt19-21ksoftirqd/109:32:261
81610,0rcu_preempt19-21ksoftirqd/109:17:291
2323299612,0cyclictest26525-21ping07:45:070
81600,0rcu_preempt19-21ksoftirqd/111:50:411
81600,0rcu_preempt19-21ksoftirqd/111:44:461
2323299609,0cyclictest0-21swapper/011:13:400
2323299601,0cyclictest26525-21ping07:40:060
10050600,0irq/346-484840032444-1kworker/1:2H10:55:151
9950590,0irq/345-484840032444-1kworker/1:2H11:05:031
10050590,0irq/346-484840020872-1kworker/1:2H10:09:171
81580,0rcu_preempt7805-21kworker/0:009:25:200
2323299582,0cyclictest29607-21runrttasks07:27:480
23232995810,0cyclictest30527-1kworker/0:2H12:20:050
10050580,0irq/346-484840019-21ksoftirqd/109:25:091
81570,0rcu_preempt3-21ksoftirqd/010:35:220
81570,0rcu_preempt19-21ksoftirqd/108:10:051
81560,0rcu_preempt3-21ksoftirqd/008:55:070
81560,0rcu_preempt3-21ksoftirqd/008:50:200
81560,0rcu_preempt25017-21apt-get07:15:040
81560,0rcu_preempt19-21ksoftirqd/110:27:491
81560,0rcu_preempt19-21ksoftirqd/107:40:091
81560,0rcu_preempt19-21ksoftirqd/107:34:571
81560,0rcu_preempt19-21ksoftirqd/107:12:401
10050560,0irq/346-484840030637-1kworker/1:2H10:17:531
10050560,0irq/346-484840030637-1kworker/1:2H10:17:531
2323299552,0cyclictest0-21swapper/010:29:420
2323299552,0cyclictest0-21swapper/007:30:270
2323299551,0cyclictest26525-21ping07:39:570
10050550,0irq/346-4848400851-21rngd11:16:520
10050550,0irq/346-48484000-21swapper/011:25:080
81540,0rcu_preempt3-21ksoftirqd/011:00:200
81540,0rcu_preempt3-21ksoftirqd/010:47:150
81540,0rcu_preempt3-21ksoftirqd/010:30:150
81540,0rcu_preempt3-21ksoftirqd/009:59:030
81540,0rcu_preempt3-21ksoftirqd/009:20:170
81540,0rcu_preempt19-21ksoftirqd/112:38:531
81540,0rcu_preempt19-21ksoftirqd/110:38:411
10050540,0irq/346-48484000-21swapper/011:50:180
81530,0rcu_preempt19-21ksoftirqd/108:00:091
2323299537,0cyclictest9950irq/345-484840010:56:390
10050530,0irq/346-484840054-21kswapd010:00:000
10050530,0irq/346-484840054-21kswapd009:53:320
10050530,0irq/346-484840023230-21cyclictest08:40:031
10050530,0irq/346-484840015993-1kworker/1:1H10:04:021
81520,0rcu_preempt3-21ksoftirqd/011:35:110
81520,0rcu_preempt3-21ksoftirqd/009:45:090
81520,0rcu_preempt3-21ksoftirqd/009:00:070
81520,0rcu_preempt3-21ksoftirqd/009:00:070
81520,0rcu_preempt26189-1kworker/1:3H07:20:061
81520,0rcu_preempt1348-21lldpd08:30:060
10050520,0irq/346-48484009658-21ssh11:35:161
10050520,0irq/346-48484006017-1kworker/1:1H11:33:411
10050520,0irq/346-48484005681-1kworker/1:1H10:41:081
10050520,0irq/346-48484000-21swapper/012:38:510
9950510,0irq/345-48484007014-21ping08:20:021
81510,0rcu_preempt3-21ksoftirqd/008:00:180
81510,0rcu_preempt20489-21kworker/0:111:20:040
81510,0rcu_preempt16608-21kworker/0:010:14:290
81510,0rcu_preempt0-21swapper/112:32:421
10050510,0irq/346-484840031274-1kworker/1:0H12:08:291
10050510,0irq/346-484840027021-21latency_hist08:59:561
10050510,0irq/346-484840025758-1kworker/1:1H10:12:201
81500,0rcu_preempt5762-21apt-get07:55:050
81500,0rcu_preempt54-21kswapd007:10:120
81500,0rcu_preempt3-21ksoftirqd/012:09:560
81500,0rcu_preempt3-21ksoftirqd/011:33:170
81500,0rcu_preempt3-21ksoftirqd/009:05:150
81500,0rcu_preempt3-21ksoftirqd/008:20:050
81500,0rcu_preempt3-21ksoftirqd/008:14:140
81500,0rcu_preempt21721-21apt-get07:05:050
81500,0rcu_preempt16731-21kworker/0:008:40:210
10050500,0irq/346-484840026639-1kworker/1:2H11:26:481
81490,0rcu_preempt3-21ksoftirqd/011:05:200
81490,0rcu_preempt3-21ksoftirqd/009:15:070
81490,0rcu_preempt3-21ksoftirqd/008:35:140
81490,0rcu_preempt3-21ksoftirqd/008:35:140
81490,0rcu_preempt3-21ksoftirqd/008:26:230
81490,0rcu_preempt16608-21kworker/0:010:15:110
81490,0rcu_preempt16608-21kworker/0:010:15:110
10050490,0irq/346-484840032444-1kworker/1:2H11:12:121
81480,0rcu_preempt54-21kswapd008:05:100
81480,0rcu_preempt3-21ksoftirqd/012:25:170
81480,0rcu_preempt19-21ksoftirqd/107:59:191
10050480,0irq/346-484840019547-1kworker/1:0H11:15:381
81470,0rcu_preempt3-21ksoftirqd/012:30:200
81470,0rcu_preempt3-21ksoftirqd/009:10:060
81470,0rcu_preempt19-21ksoftirqd/108:17:021
81470,0rcu_preempt19-21ksoftirqd/107:25:221
81470,0rcu_preempt1886-21grep12:00:190
81460,0rcu_preempt3-21ksoftirqd/007:50:100
81460,0rcu_preempt19-21ksoftirqd/108:25:151
10050450,0irq/346-48484000-21swapper/108:39:561
10050450,0irq/346-48484000-21swapper/108:39:561
81440,0rcu_preempt19-21ksoftirqd/108:09:551
81440,0rcu_preempt19-21ksoftirqd/107:08:201
81430,0rcu_preempt9738-21kworker/1:009:08:051
81400,0rcu_preempt26525-21ping07:30:141
81400,0rcu_preempt19-21ksoftirqd/107:50:061
81380,0rcu_preempt22240-21apt-get08:45:061
81380,0rcu_preempt19-21ksoftirqd/109:00:161
81380,0rcu_preempt19-21ksoftirqd/109:00:161
81370,0rcu_preempt19-21ksoftirqd/108:30:111
81370,0rcu_preempt19-21ksoftirqd/107:19:571
81350,0rcu_preempt19-21ksoftirqd/108:50:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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